diff --git a/syng-im/src/syng_im/android/core.cljs b/syng-im/src/syng_im/android/core.cljs
index 3ed4575960..4920ef7775 100644
--- a/syng-im/src/syng_im/android/core.cljs
+++ b/syng-im/src/syng_im/android/core.cljs
@@ -9,22 +9,25 @@
             [syng-im.components.react :refer [navigator app-registry]]
             [syng-im.components.contact-list.contact-list :refer [contact-list]]
             [syng-im.components.chat :refer [chat]]
+            [syng-im.components.login :refer [login-view]]
+
+            ;; [syng-im.components.chat.chat :refer [chat]]
+            [syng-im.components.nav :as nav]
             [syng-im.utils.logging :as log]))
 
-(def ^{:dynamic true :private true} *nav-render*
-  "Flag to suppress navigator re-renders from outside om when pushing/popping."
-  true)
+;; (def ^{:dynamic true :private true} *nav-render*
+;;   "Flag to suppress navigator re-renders from outside om when pushing/popping."
+;;   true)
 
 (def back-button-handler (cljs/atom {:nav     nil
                                      :handler nil}))
 
-
 (defn init-back-button-handler! [nav]
   (let [handler @back-button-handler]
     (when-not (= nav (:nav handler))
       (remove-event-listener "hardwareBackPress" (:handler handler))
       (let [new-listener (fn []
-                           (binding [*nav-render* false]
+                           (binding [nav/*nav-render* false]
                              (when (< 1 (.-length (.getCurrentRoutes nav)))
                                (.pop nav)
                                true)))]
@@ -33,20 +36,25 @@
         (add-event-listener "hardwareBackPress" new-listener)))))
 
 (defn app-root []
-  [navigator {:initial-route (clj->js {:view-id :contact-list})
+  [navigator {:initial-route (clj->js {:view-id ;; :chat
+                                       ;; :contact-list
+                                       :login
+                                       })
               :render-scene  (fn [route nav]
                                (log/debug "route" route)
-                               (when *nav-render*
+                               (when nav/*nav-render*
                                  (let [{:keys [view-id]} (js->clj route :keywordize-keys true)
                                        view-id (keyword view-id)]
                                    (init-back-button-handler! nav)
                                    (case view-id
                                      :contact-list (r/as-element [contact-list
                                                                   {:navigator nav}])
-                                     :chat (r/as-element [chat {:navigator nav}])))))}])
+                                     :chat (r/as-element [chat {:navigator nav}])
+                                     :login (r/as-element [login-view {:navigator nav}])))))}])
 
 (defn init []
   (dispatch-sync [:initialize-db])
   (dispatch [:initialize-protocol])
+  (dispatch [:load-user-phone-number])
   (dispatch [:load-syng-contacts])
   (.registerComponent app-registry "SyngIm" #(r/reactify-component app-root)))
diff --git a/syng-im/src/syng_im/components/chat/chat.cljs b/syng-im/src/syng_im/components/chat/chat.cljs
new file mode 100644
index 0000000000..d893dd9edb
--- /dev/null
+++ b/syng-im/src/syng_im/components/chat/chat.cljs
@@ -0,0 +1,79 @@
+(ns syng-im.components.chat.chat
+  (:require-macros
+   [natal-shell.data-source :refer [data-source clone-with-rows]])
+  (:require [reagent.core :as r]
+            [syng-im.components.nav :as nav]
+            [syng-im.components.react :refer [view list-view toolbar-android list-item]]
+            [syng-im.components.resources :as res]
+            [syng-im.components.invertible-scroll-view :refer [invertible-scroll-view]]
+            
+            ;; [syng-im.components.chat.message :refer [message]]
+            ;; [syng-im.components.chat.new-message :refer [new-message NewMessage]]
+            ))
+
+;(defn generate-message [n]
+;  {:id              n
+;   :type            (if (= (rem n 4) 3)
+;                      :audio
+;                      :text)
+;   :body            (if (= (rem n 3) 0)
+;                      (apply str n "." (repeat 5 " This is a text."))
+;                      (str n ". This is a text."))
+;   :outgoing        (< (rand) 0.5)
+;   :delivery-status (if (< (rand) 0.5) :delivered :seen)
+;   :date            "TODAY"
+;   :new-day         (= (rem n 3) 0)})
+;
+;(defn generate-messages [n]
+;  (map generate-message (range 1 (inc n))))
+
+;(defn load-messages []
+;  (clone-with-rows (data-source {:rowHasChanged (fn [row1 row2]
+;                                                  (not= row1 row2))})
+;                   (vec (generate-messages 100))))
+;
+
+;;temp
+;; (swap! state/app-state assoc :abc "xyz")
+
+(defn to-datasource [msgs]
+  (-> (data-source {:rowHasChanged (fn [row1 row2]
+                                     (not= row1 row2))})
+      (clone-with-rows msgs)))
+
+
+
+(defn render-row [row section-id row-id]
+  (list-item [message-view {} (js->clj row :keywordize-keys true)]))
+
+(defn chat [{:keys [navigator]}]
+  (let [greeting (subscribe [:get-greeting])
+        chat-id 1
+        ;; messages (subscribe [:get-messages chat-id])
+        ]
+    (fn []
+      (let [messages-ds (when messages
+                          (to-datasource messages))]
+        [view {:style {:flex            1
+                       :backgroundColor "white"}}
+         [toolbar-android {:logo          res/logo-icon
+                            :title         "Chat name"
+                            :titleColor    "#4A5258"
+                            :subtitle      "Last seen just now"
+                            :subtitleColor "#AAB2B2"
+                            :navIcon       res/nav-back-icon
+                            :style         {:backgroundColor "white"
+                                            :height          56
+                                            :elevation       2}
+                            :onIconClicked (fn []
+                                             (nav/nav-pop nav))}]
+         ;; temp commented
+         ;; (when messages-ds
+         ;;   [list-view {:dataSource messages-ds
+         ;;               :renderScrollComponent
+         ;;               (fn [props]
+         ;;                 (r/as-element [invertible-scroll-view {:inverted true}]))
+         ;;               :renderRow  render-row
+         ;;               :style      {:backgroundColor "white"}}])
+         ;; (new-message {:chat-id chat-id})
+         ]))))
diff --git a/syng-im/src/syng_im/components/chat/message.cljs b/syng-im/src/syng_im/components/chat/message.cljs
new file mode 100644
index 0000000000..7e1b3fb7dd
--- /dev/null
+++ b/syng-im/src/syng_im/components/chat/message.cljs
@@ -0,0 +1,99 @@
+(ns syng-im.components.chat.message
+  (:require [re-frame.core :refer [subscribe dispatch dispatch-sync]]
+            [syng-im.components.react :refer [view text image]]
+            [syng-im.components.resources :as res]
+            [syng-im.constants :refer [text-content-type]]))
+
+(defn message-view []
+  (let [greeting (subscribe [:get-greeting])] 
+    (fn []
+      (let [msg-id "1"
+            content "1"
+            content-type "1"
+            outgoing true
+            delivery-status :seen
+            date "1"
+            new-day true]
+        [view {:paddingHorizontal 15}
+         (when new-day
+           [text {:style {:marginVertical 10
+                          :fontFamily     "Avenir-Roman"
+                          :fontSize       11
+                          :color          "#AAB2B2"
+                          :letterSpacing  1
+                          :lineHeight     15
+                          :textAlign      "center"
+                          :opacity        0.8}}
+            date])
+         [view {:style (merge {:flexDirection  "column"
+                               :width          260
+                               :marginVertical 5}
+                              (if outgoing
+                                {:alignSelf  "flex-end"
+                                 :alignItems "flex-end"}
+                                {:alignSelf  "flex-start"
+                                 :alignItems "flex-start"}))}
+          [view {:style (merge {:borderRadius 6}
+                               (if (= content-type text-content-type)
+                                 {:paddingVertical   12
+                                  :paddingHorizontal 16}
+                                 {:paddingVertical   14
+                                  :paddingHorizontal 10})
+                               (if outgoing
+                                 {:backgroundColor "#D3EEEF"}
+                                 {:backgroundColor "#FBF6E3"}))}
+           (if (= content-type text-content-type)
+             [text {:style {:fontSize   14
+                            :fontFamily "Avenir-Roman"
+                            :color      "#4A5258"}}
+              content]
+             [view {:style {:flexDirection "row"
+                            :alignItems    "center"}}
+              [view {:style {:width        33
+                             :height       33
+                             :borderRadius 50
+                             :elevation    1}}
+               [image {:source res/play
+                       :style  {:width  33
+                                :height 33}}]]
+              [view {:style {:marginTop  10
+                             :marginLeft 10
+                             :width      120
+                             :height     26
+                             :elevation  1}}
+               [view {:style {:position        "absolute"
+                              :top             4
+                              :width           120
+                              :height          2
+                              :backgroundColor "#EC7262"}}]
+               [view {:style {:position        "absolute"
+                              :left            0
+                              :top             0
+                              :width           2
+                              :height          10
+                              :backgroundColor "#4A5258"}}]
+               [text {:style {:position      "absolute"
+                              :left          1
+                              :top           11
+                              :fontFamily    "Avenir-Roman"
+                              :fontSize      11
+                              :color         "#4A5258"
+                              :letterSpacing 1
+                              :lineHeight    15}}
+                "03:39"]]])]
+          (when (and outgoing delivery-status)
+            [view {:style {:flexDirection "row"
+                           :marginTop     2}}
+             [image {:source (if (= (keyword delivery-status) :seen)
+                               res/seen-icon
+                               res/delivered-icon)
+                     :style  {:marginTop 6
+                              :opacity   0.6}}]
+             [text {:style {:fontFamily "Avenir-Roman"
+                            :fontSize   11
+                            :color      "#AAB2B2"
+                            :opacity    0.8
+                            :marginLeft 5}}
+              (if (= (keyword delivery-status) :seen)
+                "Seen"
+                "Delivered")]])]]))))
diff --git a/syng-im/src/syng_im/components/chat/new_message.cljs b/syng-im/src/syng_im/components/chat/new_message.cljs
new file mode 100644
index 0000000000..46c042031f
--- /dev/null
+++ b/syng-im/src/syng_im/components/chat/new_message.cljs
@@ -0,0 +1,53 @@
+(ns syng-im.components.chat.new-message
+  ;; (:require [syng-im.components.react :refer [view text image text-input]]
+  ;;           [syng-im.components.resources :as res]
+  ;;           [syng-im.constants :refer [text-content-type]])
+  )
+
+;; (defui NewMessage
+;;   static om/IQuery
+;;   (query [this]
+;;     '[:chat/chat-id])
+;;   Object
+;;   (render [this]
+;;     (view {:style {:flexDirection   "row"
+;;                    :margin          10
+;;                    :height          40
+;;                    :backgroundColor "#E5F5F6"
+;;                    :borderRadius    5}}
+;;           (image {:source res/mic
+;;                   :style  {:marginTop  11
+;;                            :marginLeft 14
+;;                            :width      13
+;;                            :height     20}})
+;;           (text-input {:underlineColorAndroid "#9CBFC0"
+;;                        :style                 {:flex       1
+;;                                                :marginLeft 18
+;;                                                :lineHeight 42
+;;                                                :fontSize   14
+;;                                                :fontFamily "Avenir-Roman"
+;;                                                :color      "#9CBFC0"}
+;;                        :autoFocus             true
+;;                        :placeholder           "Enter your message here"
+;;                        :value                 (from-state this :text)
+;;                        :onChangeText          (fn [text]
+;;                                                 ;(log/debug (with-out-str (pr (js->clj (om/props this)))) (-> (om/props this) :chat-id))
+;;                                                 ;(om/set-state! this (clj->js {:text text}))
+;;                                                 (swap! local-state assoc :text text)
+;;                                                 )
+;;                        :onSubmitEditing       (fn [e]
+;;                                                 (let [chat-id (-> (om/props this) :chat-id)
+;;                                                       ;text    (from-state this :text)
+;;                                                       text    (get @local-state :text)]
+;;                                                   ;(om/set-state! this (clj->js {:text nil}))
+;;                                                   (send-msg chat-id text)))})
+;;           (image {:source res/smile
+;;                   :style  {:marginTop   11
+;;                            :marginRight 12
+;;                            :width       18
+;;                            :height      18}})
+;;           (image {:source res/att
+;;                   :style  {:marginTop   14
+;;                            :marginRight 16
+;;                            :width       17
+;;                            :height      14}}))))
diff --git a/syng-im/src/syng_im/components/contact_list/contact.cljs b/syng-im/src/syng_im/components/contact_list/contact.cljs
index 7bd7879948..4fdbc52b87 100644
--- a/syng-im/src/syng_im/components/contact_list/contact.cljs
+++ b/syng-im/src/syng_im/components/contact_list/contact.cljs
@@ -1,17 +1,16 @@
 (ns syng-im.components.contact-list.contact
   (:require [syng-im.components.react :refer [view text image touchable-highlight]]
             [syng-im.components.resources :as res]
-            ;; [messenger.comm.intercom :as intercom :refer [show-chat]]
-            ;; [messenger.components.chat.chat :refer [chat]]
-            ))
+            [syng-im.components.nav :as nav]))
 
-(defn contact-view [contact]
+(defn show-chat [navigator whisper-identity]
+  (nav/nav-push navigator {:view-id :chat}))
+
+(defn contact-view [{:keys [navigator contact]}]
   (let [{:keys [name photo-path delivery-status datetime new-messages-count
                 online whisper-identity]} contact]
     [touchable-highlight {:onPress (fn []
-                                     ;; TODO
-                                     ;; (show-chat nav whisper-identity)
-                                     )}
+                                     (show-chat navigator whisper-identity))}
      [view {:style {:flexDirection "row"
                     :marginTop     5
                     :marginBottom  5
diff --git a/syng-im/src/syng_im/components/contact_list/contact_list.cljs b/syng-im/src/syng_im/components/contact_list/contact_list.cljs
index 31f4f6ecf3..b355b0f46c 100644
--- a/syng-im/src/syng_im/components/contact_list/contact_list.cljs
+++ b/syng-im/src/syng_im/components/contact_list/contact_list.cljs
@@ -14,83 +14,28 @@
             ;; [messenger.components.iname :as in]
             ))
 
-(defn render-row [row section-id row-id]
-  (list-item (contact-view (js->clj row :keywordize-keys true))))
-
-;; (defn load-contacts []
-;;   (intercom/load-syng-contacts))
-
-;; (defui ContactList
-;;   static in/IName
-;;   (get-name [this]
-;;     :contacts/contacts)
-;;   static om/IQuery
-;;   (query [this]
-;;     '[:contacts-ds])
-;;   Object
-;;   (componentDidMount [this]
-;;     (load-contacts))
-;;   (render [this]
-;;     (let [{{contacts-ds :contacts-ds} :contacts/contacts} (om/props this)
-;;           {:keys [nav]} (om/get-computed this)]
-;;       (view {:style {:flex            1
-;;                      :backgroundColor "white"}}
-;;             (toolbar-android {:logo       res/logo-icon
-;;                               :title      "Chats"
-;;                               :titleColor "#4A5258"
-;;                               :style      {:backgroundColor "white"
-;;                                            :height          56
-;;                                            :elevation       2}})
-;;             (when contacts-ds
-;;               (list-view {:dataSource contacts-ds
- ;;                           :renderRow  (partial render-row nav)
-;;                           :style      {:backgroundColor "white"}}))))))
-
-;; (def contact-list (om/factory ContactList))
+(defn render-row [navigator row section-id row-id]
+  (list-item [contact-view {:navigator navigator
+                            :contact (js->clj row :keywordize-keys true)}]))
 
 (defn get-data-source [contacts]
   (clone-with-rows (data-source {:rowHasChanged (fn [row1 row2]
                                                   (not= row1 row2))})
                    contacts))
 
-(defn contacts-list-re-frame [contacts]
-  (let [contacts-ds (get-data-source contacts)]
-    [view {:style {:flex            1
-                   :backgroundColor "white"}}
-     [toolbar-android {:logo       res/logo-icon
-                       :title      "Chats"
-                       :titleColor "#4A5258"
-                       :style      {:backgroundColor "white"
-                                    :height          56
-                                    :elevation       2}}]
-     (when contacts-ds
-       [list-view {:dataSource contacts-ds
-                   :renderRow   render-row
-                   :style      {:backgroundColor "white"}}]
-       )
-     ]))
-
-
-
-
-
-(def logo-img (js/require "./images/cljs.png"))
-
-
-(defn alert [title]
-  (.alert (.-Alert js/React) title))
-
 (defn contact-list [{:keys [navigator]}]
-  (let [greeting (subscribe [:get-greeting])
-        contacts (subscribe [:get-contacts])]
+  (let [contacts (subscribe [:get-contacts])]
     (fn []
-      (contacts-list-re-frame @contacts)
-      
-      ;; [view {:style {:flex-direction "column" :margin 40 :align-items "center"}}
-      ;;  [text {:style {:font-size 30 :font-weight "100" :margin-bottom 20 :text-align "center"}} (str @greeting " " (count @contacts))]
-      ;;  [image {:source logo-img
-      ;;          :style  {:width 80 :height 80 :margin-bottom 30}}]
-      ;;  [touchable-highlight {:style    {:background-color "#999" :padding 10 :border-radius 5}
-      ;;                        :on-press #(alert "HELLO!")}
-      ;;   [text {:style {:color "white" :text-align "center" :font-weight "bold"}} "press me"]]]
-      )))
+      (let [contacts-ds (get-data-source @contacts)]
+        [view {:style {:flex            1
+                       :backgroundColor "white"}}
+         [toolbar-android {:logo       res/logo-icon
+                           :title      "Chats"
+                           :titleColor "#4A5258"
+                           :style      {:backgroundColor "white"
+                                        :height          56
+                                        :elevation       2}}]
+         (when contacts-ds
+           [list-view {:dataSource contacts-ds
+                       :renderRow  (partial render-row navigator)
+                       :style      {:backgroundColor "white"}}])]))))
diff --git a/syng-im/src/syng_im/components/invertible-scroll-view.cljs b/syng-im/src/syng_im/components/invertible-scroll-view.cljs
new file mode 100644
index 0000000000..89065cd72e
--- /dev/null
+++ b/syng-im/src/syng_im/components/invertible-scroll-view.cljs
@@ -0,0 +1,9 @@
+(ns syng-im.components.invertible-scroll-view
+  (:require [reagent.core :as r]))
+
+(set! js/InvertibleScrollView (js/require "react-native-invertible-scroll-view"))
+
+(def invertible-scroll-view (r/adapt-react-class js/Spinner))
+;; (defn invertible-scroll-view [props]
+;;   (js/React.createElement js/InvertibleScrollView
+;;                           (clj->js (merge {:inverted true} props))))
diff --git a/syng-im/src/syng_im/components/login.cljs b/syng-im/src/syng_im/components/login.cljs
new file mode 100644
index 0000000000..69f1d7d42c
--- /dev/null
+++ b/syng-im/src/syng_im/components/login.cljs
@@ -0,0 +1,66 @@
+(ns syng-im.components.login
+  (:require [re-frame.core :refer [subscribe dispatch dispatch-sync]]
+            [syng-im.components.react :refer [view text image touchable-highlight
+                                              toolbar-android text-input]]
+            [syng-im.components.resources :as res]
+            [syng-im.components.spinner :refer [spinner]]
+            [syng-im.components.nav :as nav]
+            [syng-im.utils.utils :refer [log toast http-post]]
+            [syng-im.utils.phone-number :refer [format-phone-number]]
+            ;; [messenger.android.sign-up-confirm :refer [sign-up-confirm]]
+))
+
+(def nav-atom (atom nil))
+
+(defn show-confirm-view []
+  (dispatch [:set-loading false])
+  ;; TODO 'nav-replace
+  (nav/nav-push @nav-atom {:view-id :chat}))
+
+(defn sign-up [user-phone-number user-identity]
+  (dispatch [:set-loading true])
+  (dispatch [:sign-up user-phone-number user-identity show-confirm-view]))
+
+(defn update-phone-number [value]
+  (let [formatted (format-phone-number value)]
+    (dispatch [:set-user-phone-number formatted])))
+
+(defn login-view [{:keys [navigator]}]
+  (let [loading (subscribe [:get-loading])
+        user-phone-number (subscribe [:get-user-phone-number])
+        user-identity (subscribe [:get-user-identity])]
+    (fn []
+      (reset! nav-atom navigator)
+      [view {:style {:flex 1}}
+       [view {:style {:flex 1
+                      :backgroundColor "white"}}
+        [toolbar-android {:logo res/logo-icon
+                          :title "Login"
+                          :titleColor "#4A5258"
+                          :style {:backgroundColor "white"
+                                  :height 56
+                                  :elevation 2}}]
+        [view {}
+         [text-input {:underlineColorAndroid "#9CBFC0"
+                      :placeholder "Enter your phone number"
+                      :keyboardType "phone-pad"
+                      :onChangeText (fn [value]
+                                      (update-phone-number value))
+                      :style {:flex 1
+                              :marginHorizontal 18
+                              :lineHeight 42
+                              :fontSize 14
+                              :fontFamily "Avenir-Roman"
+                              :color "#9CBFC0"}}
+          @user-phone-number]
+         [touchable-highlight {:onPress #(sign-up @user-phone-number @user-identity)
+                               :style {:alignSelf "center"
+                                       :borderRadius 7
+                                       :backgroundColor "#E5F5F6"
+                                       :width 100}}
+          [text {:style {:marginVertical 10
+                         :textAlign "center"}}
+           "Sign up"]]]]
+       ;; (when (or loading (not user-identity))
+       ;;   [spinner {:visible true}])
+       ])))
diff --git a/syng-im/src/syng_im/components/nav.cljs b/syng-im/src/syng_im/components/nav.cljs
new file mode 100644
index 0000000000..6440e79de5
--- /dev/null
+++ b/syng-im/src/syng_im/components/nav.cljs
@@ -0,0 +1,17 @@
+(ns syng-im.components.nav)
+
+(def ^{:dynamic true :private true} *nav-render*
+  "Flag to suppress navigator re-renders from outside om when pushing/popping."
+  true)
+
+(defn nav-push [nav route]
+  (binding [*nav-render* false]
+    (.push nav (clj->js route))))
+
+(defn nav-replace [nav route]
+  (binding [*nav-render* false]
+    (.replace nav (clj->js route))))
+
+(defn nav-pop [nav]
+  (binding [*nav-render* false]
+    (.pop nav)))
diff --git a/syng-im/src/syng_im/components/react.cljs b/syng-im/src/syng_im/components/react.cljs
index 18ea53dd47..fca29f0d51 100644
--- a/syng-im/src/syng_im/components/react.cljs
+++ b/syng-im/src/syng_im/components/react.cljs
@@ -11,6 +11,7 @@
 (def touchable-highlight (r/adapt-react-class (.-TouchableHighlight js/React)))
 (def toolbar-android (r/adapt-react-class (.-ToolbarAndroid js/React)))
 (def list-view (r/adapt-react-class (.-ListView js/React)))
+(def text-input (r/adapt-react-class (.-TextInput js/React)))
 
 (defn list-item [component]
   (r/as-element component))
diff --git a/syng-im/src/syng_im/components/spinner.cljs b/syng-im/src/syng_im/components/spinner.cljs
new file mode 100644
index 0000000000..7202074a81
--- /dev/null
+++ b/syng-im/src/syng_im/components/spinner.cljs
@@ -0,0 +1,9 @@
+(ns syng-im.components.spinner
+  (:require [reagent.core :as r]))
+
+(set! js/Spinner (.-default (js/require "react-native-loading-spinner-overlay")))
+
+(def spinner (r/adapt-react-class js/Spinner))
+;; (defn spinner [props]
+;;   (js/React.createElement js/Spinner
+;;                           (clj->js props)))
diff --git a/syng-im/src/syng_im/constants.cljs b/syng-im/src/syng_im/constants.cljs
index d7d0c881cd..c322156e43 100644
--- a/syng-im/src/syng_im/constants.cljs
+++ b/syng-im/src/syng_im/constants.cljs
@@ -2,4 +2,7 @@
 
 (def ethereum-rpc-url "http://localhost:8545")
 
-(def text-content-type "text/plain")
\ No newline at end of file
+;; (def server-address "http://rpc0.syng.im:20000/")
+(def server-address "http://10.0.3.2:3000/")
+
+(def text-content-type "text/plain")
diff --git a/syng-im/src/syng_im/handlers.cljs b/syng-im/src/syng_im/handlers.cljs
index 24c4ff176e..d5f7882f30 100644
--- a/syng-im/src/syng_im/handlers.cljs
+++ b/syng-im/src/syng_im/handlers.cljs
@@ -7,9 +7,11 @@
     [syng-im.protocol.protocol-handler :refer [make-handler]]
     [syng-im.models.protocol :refer [update-identity
                                      set-initialized]]
+    [syng-im.models.user-data :as user-data]
     [syng-im.models.contacts :as contacts]
     [syng-im.models.messages :refer [save-message
                                      new-message-arrived]]
+    [syng-im.handlers.server :as server]
     [syng-im.utils.logging :as log]))
 
 ;; -- Middleware ------------------------------------------------------------
@@ -31,6 +33,12 @@
   (fn [_ _]
     app-db))
 
+;; -- Common --------------------------------------------------------------
+
+(register-handler :set-loading
+  (fn [db [_ value]]
+    (assoc db :loading value)))
+
 ;; -- Protocol --------------------------------------------------------------
 
 (register-handler :initialize-protocol
@@ -50,6 +58,24 @@
     (save-message chat-id msg)
     (new-message-arrived db chat-id msg-id)))
 
+;; -- User data --------------------------------------------------------------
+
+(register-handler :set-user-phone-number
+  (fn [db [_ value]]
+    (assoc db :user-phone-number value)))
+
+(register-handler :load-user-phone-number
+  (fn [db [_]]
+    (user-data/load-phone-number)
+    db))
+
+;; -- Sign up --------------------------------------------------------------
+
+(register-handler :sign-up
+  (fn [db [_ phone-number whisper-identity handler]]
+    (server/sign-up phone-number whisper-identity handler)
+    db))
+
 ;; -- Contacts --------------------------------------------------------------
 
 (register-handler :load-syng-contacts
diff --git a/syng-im/src/syng_im/handlers/server.cljs b/syng-im/src/syng_im/handlers/server.cljs
new file mode 100644
index 0000000000..b25fafa16d
--- /dev/null
+++ b/syng-im/src/syng_im/handlers/server.cljs
@@ -0,0 +1,21 @@
+(ns syng-im.handlers.server
+  (:require [re-frame.core :refer [subscribe dispatch dispatch-sync]]
+            [syng-im.models.user-data :as user-data]
+            [syng-im.utils.utils :refer [log on-error http-post]]
+            [syng-im.utils.logging :as log]))
+
+(defn sign-up
+  [phone-number whisper-identity handler]
+  (user-data/save-phone-number phone-number)
+  (http-post "sign-up" {:phone-number phone-number
+                        :whisper-identity whisper-identity}
+             (fn [body]
+               (log body)
+               (handler))))
+
+(defn sign-up-confirm
+  [state id {:keys [confirmation-code handler] :as args}]
+  (log/info "handling " id " args = " args)
+  (http-post "sign-up-confirm"
+             {:code confirmation-code}
+             handler))
diff --git a/syng-im/src/syng_im/models/user_data.cljs b/syng-im/src/syng_im/models/user_data.cljs
new file mode 100644
index 0000000000..463a731b5a
--- /dev/null
+++ b/syng-im/src/syng_im/models/user_data.cljs
@@ -0,0 +1,17 @@
+(ns syng-im.models.user-data
+  (:require-macros
+   [natal-shell.async-storage :refer [get-item set-item]])
+  (:require [re-frame.core :refer [subscribe dispatch dispatch-sync]]
+            [syng-im.utils.utils :refer [log on-error toast]]))
+
+(defn save-phone-number [phone-number]
+  (set-item "user-phone-number" phone-number)
+  (dispatch [:set-user-phone-number phone-number]))
+
+(defn load-phone-number []
+  (get-item "user-phone-number"
+            (fn [error value]
+              (if error
+                (on-error error)
+                (dispatch [:set-user-phone-number (when value
+                                                    (str value))])))))
diff --git a/syng-im/src/syng_im/subs.cljs b/syng-im/src/syng_im/subs.cljs
index 9fcace1759..8899ed7a0b 100644
--- a/syng-im/src/syng_im/subs.cljs
+++ b/syng-im/src/syng_im/subs.cljs
@@ -8,6 +8,25 @@
     (reaction
       (get @db :greeting))))
 
+;; -- User data --------------------------------------------------------------
+(register-sub
+  :get-user-phone-number
+  (fn [db _]
+    (reaction
+      (get @db :user-phone-number))))
+
+(register-sub
+  :get-user-identity
+  (fn [db _]
+    (reaction
+      (get @db :identity))))
+
+(register-sub
+  :get-loading
+  (fn [db _]
+    (reaction
+      (get @db :loading))))
+
 (register-sub
   :get-contacts
   (fn [db _]
diff --git a/syng-im/src/syng_im/utils/crypt.cljs b/syng-im/src/syng_im/utils/crypt.cljs
new file mode 100644
index 0000000000..cb80de1a8d
--- /dev/null
+++ b/syng-im/src/syng_im/utils/crypt.cljs
@@ -0,0 +1,17 @@
+(ns syng-im.utils.crypt
+  (:require [goog.crypt :refer [byteArrayToHex]])
+  (:import goog.crypt.Sha256))
+
+(def sha-256 (Sha256.))
+
+(defn bytes-to-str [arr]
+  (apply str (map char arr)))
+
+(defn str-to-bytes [s]
+  (map (comp int) s))
+
+(defn encrypt [s]
+  (.reset sha-256)
+  (.update sha-256 s)
+  (-> (.digest sha-256)
+      byteArrayToHex))
diff --git a/syng-im/src/syng_im/utils/phone_number.cljs b/syng-im/src/syng_im/utils/phone_number.cljs
new file mode 100644
index 0000000000..6a7481faf4
--- /dev/null
+++ b/syng-im/src/syng_im/utils/phone_number.cljs
@@ -0,0 +1,9 @@
+(ns syng-im.utils.phone-number)
+
+(def i18n (js/require "react-native-i18n"))
+(def locale (.-locale i18n))
+(def country-code (subs locale 3 5))
+(set! js/PhoneNumber (js/require "awesome-phonenumber"))
+
+(defn format-phone-number [number]
+  (str (.getNumber (js/PhoneNumber. number country-code "international"))))
diff --git a/syng-im/src/syng_im/utils/utils.cljs b/syng-im/src/syng_im/utils/utils.cljs
index 964878c4cc..03c88afd00 100644
--- a/syng-im/src/syng_im/utils/utils.cljs
+++ b/syng-im/src/syng_im/utils/utils.cljs
@@ -2,10 +2,8 @@
   (:require-macros
    [natal-shell.async-storage :refer [get-item set-item]]
    [natal-shell.alert :refer [alert]]
-   [natal-shell.toast-android :as toast]))
-
-;; (def server-address "http://rpc0.syng.im:20000/")
-(def server-address "http://10.0.3.2:3000/")
+   [natal-shell.toast-android :as toast])
+  (:require [syng-im.constants :as const]))
 
 (defn log [obj]
   (.log js/console obj))
@@ -21,7 +19,7 @@
    (http-post action data on-success nil))
   ([action data on-success on-error]
    (-> (.fetch js/window
-               (str server-address action)
+               (str const/server-address action)
                (clj->js {:method "POST"
                          :headers {:accept "application/json"
                                    :content-type "application/json"}