diff --git a/src/messenger/android/chat.cljs b/src/messenger/android/chat.cljs
index 2d7c1fd252..fb2b40ffae 100644
--- a/src/messenger/android/chat.cljs
+++ b/src/messenger/android/chat.cljs
@@ -8,7 +8,7 @@
   (:require [om.next :as om :refer-macros [defui]]
             [re-natal.support :as sup]
             [messenger.state :as state]
-            [messenger.android.resources :as res]))
+            [messenger.utils.resources :as res]))
 
 (set! js/InvertibleScrollView (js/require "react-native-invertible-scroll-view"))
 
diff --git a/src/messenger/android/contacts.cljs b/src/messenger/android/contacts.cljs
deleted file mode 100644
index 3c27b1d486..0000000000
--- a/src/messenger/android/contacts.cljs
+++ /dev/null
@@ -1,45 +0,0 @@
-(ns messenger.android.contacts
-  (:require [messenger.state :as state]
-            [messenger.android.utils :refer [log toast http-post]]
-            [messenger.android.database :as db]))
-
-(def fake-contacts? true)
-
-(def react-native-contacts (js/require "react-native-contacts"))
-
-(defn generate-contact [n]
-  {:name (str "Contact " n)
-   :photo-path ""
-   :phone-numbers [{:label "mobile" :number (apply str (repeat 7 n))}]
-   :delivery-status (if (< (rand) 0.5) :delivered :seen)
-   :datetime "15:30"
-   :new-messages-count (rand-int 3)
-   :online (< (rand) 0.5)})
-
-(defn generate-contacts [n]
-  (map generate-contact (range 1 (inc n))))
-
-(defn load-phone-contacts [on-success on-error]
-  (if fake-contacts?
-    (on-success (generate-contacts 10))
-    (.getAll react-native-contacts
-             (fn [error raw-contacts]
-               (if (not error)
-                 (let [contacts (map (fn [contact]
-                                       (merge (generate-contact 1)
-                                              {:name (:givenName contact)
-                                               :photo-path (:thumbnailPath contact)
-                                               :phone-numbers (:phoneNumbers contact)}))
-                                     (js->clj raw-contacts :keywordize-keys true))]
-                   (on-success contacts))
-                 (when on-error
-                   (on-error error)))))))
-
-(defn load-whisper-contacts []
-  (map (fn [contact]
-         (merge contact
-                {:delivery-status (if (< (rand) 0.5) :delivered :seen)
-                 :datetime "15:30"
-                 :new-messages-count (rand-int 3)
-                 :online (< (rand) 0.5)}))
-       (db/get-contacts)))
diff --git a/src/messenger/android/contacts_list.cljs b/src/messenger/android/contacts_list.cljs
index 889d74db60..2cf49fe514 100644
--- a/src/messenger/android/contacts_list.cljs
+++ b/src/messenger/android/contacts_list.cljs
@@ -2,15 +2,13 @@
   (:require-macros
    [natal-shell.components :refer [view text image touchable-highlight list-view
                                    toolbar-android]]
-   [natal-shell.data-source :refer [data-source clone-with-rows]]
-   [natal-shell.core :refer [with-error-view]]
-   [natal-shell.alert :refer [alert]])
+   [natal-shell.core :refer [with-error-view]])
   (:require [om.next :as om :refer-macros [defui]]
             [re-natal.support :as sup]
             [messenger.state :as state]
-            [messenger.android.utils :refer [log toast http-post]]
-            [messenger.android.resources :as res]
-            [messenger.android.contacts :as contacts]
+            [messenger.utils.utils :refer [log toast http-post]]
+            [messenger.utils.resources :as res]
+            [messenger.comm.intercom :as intercom]
             [messenger.android.chat :refer [chat]]))
 
 (def fake-contacts? true)
@@ -137,9 +135,7 @@
                         {:nav nav})))
 
 (defn load-contacts []
-  (let [contacts (contacts/load-whisper-contacts)]
-    (swap! state/app-state update :contacts-ds
-           #(clone-with-rows % contacts))))
+  (intercom/load-syng-contacts))
 
 (defui ContactsList
   static om/IQuery
diff --git a/src/messenger/android/login.cljs b/src/messenger/android/login.cljs
index 9f8c085a71..34a4d2a6c0 100644
--- a/src/messenger/android/login.cljs
+++ b/src/messenger/android/login.cljs
@@ -6,10 +6,9 @@
   (:require [om.next :as om :refer-macros [defui]]
             [re-natal.support :as sup]
             [messenger.state :as state]
-            [messenger.comm.intercom :as intercom :refer [set-user-phone-number
-                                                          save-user-phone-number]]
-            [messenger.android.utils :refer [log toast http-post]]
-            [messenger.android.resources :as res]
+            [messenger.comm.intercom :as intercom :refer [set-user-phone-number]]
+            [messenger.utils.utils :refer [log toast http-post]]
+            [messenger.utils.resources :as res]
             [messenger.android.sign-up-confirm :refer [sign-up-confirm]]))
 
 (def nav-atom (atom nil))
@@ -26,7 +25,6 @@
   (let [app-state (state/state)
         phone-number (:user-phone-number app-state)
         whisper-identity (:user-whisper-identity app-state)]
-    (save-user-phone-number phone-number)
     (intercom/sign-up phone-number whisper-identity show-confirm-view)))
 
 (defn update-phone-number [value]
diff --git a/src/messenger/android/sign_up_confirm.cljs b/src/messenger/android/sign_up_confirm.cljs
index c7146f17ca..fc48094c6e 100644
--- a/src/messenger/android/sign_up_confirm.cljs
+++ b/src/messenger/android/sign_up_confirm.cljs
@@ -5,16 +5,13 @@
    [natal-shell.async-storage :refer [get-item set-item]]
    [natal-shell.core :refer [with-error-view]]
    [natal-shell.alert :refer [alert]])
-  (:require [clojure.string :as cstr]
-            [om.next :as om :refer-macros [defui]]
+  (:require [om.next :as om :refer-macros [defui]]
             [re-natal.support :as sup]
             [syng-im.protocol.web3 :as whisper]
             [messenger.state :as state]
-            [messenger.android.utils :refer [log toast http-post]]
-            [messenger.android.crypt :refer [encrypt]]
-            [messenger.android.resources :as res]
-            [messenger.android.database :as db]
-            [messenger.android.contacts :as contacts]
+            [messenger.utils.utils :refer [log toast]]
+            [messenger.utils.resources :as res]
+            [messenger.comm.intercom :as intercom :refer [set-confirmation-code]]
             [messenger.android.contacts-list :refer [contacts-list]]))
 
 (def nav-atom (atom nil))
@@ -24,76 +21,28 @@
     (.replace @nav-atom (clj->js {:component contacts-list
                                   :name "contacts-list"}))))
 
-(defn get-contact-name [phone-contact]
-  (cstr/join " "
-             (filter #(not (cstr/blank? %))
-                     [(:givenName phone-contact)
-                      (:middleName phone-contact)
-                      (:familyName phone-contact)])))
+(defn sync-contacts []
+  (intercom/sync-contacts show-home-view))
 
-(defn handle-load-contacts-identities-response [contacts-by-hash data]
-  (let [contacts (map (fn [server-contact]
-                        (let [number-info (get contacts-by-hash
-                                               (:phone-number-hash server-contact))
-                              phone-contact (:contact number-info)]
-                          {:phone-number (:number number-info)
-                           :whisper-identity (:whisper-identity server-contact)
-                           :name (get-contact-name phone-contact)
-                           :photo-path (:photo-path phone-contact)}))
-                      (js->clj (:contacts data)))]
-    (db/add-contacts contacts)
-    (show-home-view)))
-
-(defn get-contacts-by-hash [contacts]
-  (let [numbers-info (reduce (fn [numbers contact]
-                               (into numbers
-                                     (map (fn [c]
-                                            {:number (:number c)
-                                             :contact contact})
-                                          (:phone-numbers contact))))
-                             '()
-                             contacts)]
-    (reduce (fn [m number-info]
-              (let [number (:number number-info)
-                    hash (encrypt number)]
-                (assoc m hash number-info)))
-            {}
-            numbers-info)))
-
-(defn send-load-contacts-identities [contacts]
-  (let [contacts-by-hash (get-contacts-by-hash contacts)
-        data (keys contacts-by-hash)]
-    (http-post "get-contacts" {:phone-number-hashes data}
-               (partial handle-load-contacts-identities-response contacts-by-hash)
-               (fn [error]
-                 (toast (str error))))))
-
-(defn load-contacts []
-  (contacts/load-phone-contacts
-   send-load-contacts-identities
-   (fn [error]
-     (toast (str error)))))
-
-(defn handle-send-code-response [body]
+(defn on-send-code-response [body]
   (log body)
   (toast (if (:confirmed body)
            "Confirmed"
            "Wrong code"))
   (when (:confirmed body)
-    (load-contacts)))
+    ;; TODO user action required
+    (sync-contacts)))
 
 (defn code-valid? [code]
   (= 4 (count code)))
 
 (defn send-code [code]
   (when (code-valid? code)
-    (http-post "sign-up-confirm"
-               {:code code}
-               handle-send-code-response)))
+    (intercom/sign-up-confirm code on-send-code-response)))
 
 (defn update-code [value]
   (let [formatted value]
-    (swap! state/app-state assoc :confirmation-code formatted)))
+    (set-confirmation-code formatted)))
 
 (defui SignUpConfirm
   static om/IQuery
@@ -134,7 +83,7 @@
                 :style {:alignSelf "center"
                         :borderRadius 7
                         :backgroundColor "#E5F5F6"
-                        
+
                         :width 100}}
                (text {:style {:marginVertical 10
                               :textAlign "center"}}
diff --git a/src/messenger/comm/intercom.cljs b/src/messenger/comm/intercom.cljs
index af7c2f5b36..9199559bfa 100644
--- a/src/messenger/comm/intercom.cljs
+++ b/src/messenger/comm/intercom.cljs
@@ -11,6 +11,8 @@
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
+;;; user data
+
 (defn set-user-phone-number [phone-number]
   (publish! :service [:user-data :user-data/set-phone-number phone-number]))
 
@@ -24,10 +26,29 @@
 (defn load-user-whisper-identity []
   (publish! :service [:user-data :user-data/load-whisper-identity nil]))
 
+(defn set-confirmation-code [confirmation-code]
+  (publish! :service [:user-data :user-data/set-confirmation-code confirmation-code]))
+
+
+;;; server
+
 (defn sign-up [phone-number whisper-identity handler]
   (publish! :service [:server :server/sign-up {:phone-number phone-number
                                                :whisper-identity whisper-identity
                                                :handler handler}]))
 
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+(defn sign-up-confirm [confirmation-code handler]
+  (publish! :service [:server :server/sign-up-confirm
+                      {:confirmation-code confirmation-code
+                       :handler handler}]))
 
+
+;; contacts
+
+(defn load-syng-contacts []
+  (publish! :service [:contacts :contacts/load-syng-contacts nil]))
+
+(defn sync-contacts [handler]
+  (publish! :service [:contacts :contacts/sync-contacts handler]))
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
diff --git a/src/messenger/comm/services.cljs b/src/messenger/comm/services.cljs
index da30f30304..59a3bda5f4 100644
--- a/src/messenger/comm/services.cljs
+++ b/src/messenger/comm/services.cljs
@@ -2,7 +2,8 @@
   (:require
     [syng-im.utils.logging :as log]
     [messenger.services.user-data :refer [user-data-handler]]
-    [messenger.services.server :refer [server-handler]]))
+    [messenger.services.server :refer [server-handler]]
+    [messenger.services.contacts :refer [contacts-handler]]))
 
 (defmulti service (fn [state service-id args]
                     service-id))
@@ -15,6 +16,10 @@
   [state service-id args]
   (server-handler state args))
 
+(defmethod service :contacts
+  [state service-id args]
+  (contacts-handler state args))
+
 (defn services-handler [state service-id args]
   (log/info "handling " service-id " args = " args)
   (service state service-id args))
diff --git a/src/messenger/models/contacts.cljs b/src/messenger/models/contacts.cljs
new file mode 100644
index 0000000000..2cc6d4a750
--- /dev/null
+++ b/src/messenger/models/contacts.cljs
@@ -0,0 +1,54 @@
+(ns messenger.models.contacts
+  (:require-macros [natal-shell.data-source :refer [data-source clone-with-rows]])
+  (:require [cljs.core.async :as async :refer [chan put! <! >!]]
+            [messenger.state :as state]
+            [messenger.utils.utils :refer [log toast http-post]]
+            [messenger.utils.database :as db]))
+
+(def fake-contacts? true)
+
+(def react-native-contacts (js/require "react-native-contacts"))
+
+(defn- generate-contact [n]
+  {:name (str "Contact " n)
+   :photo-path ""
+   :phone-numbers [{:label "mobile" :number (apply str (repeat 7 n))}]
+   :delivery-status (if (< (rand) 0.5) :delivered :seen)
+   :datetime "15:30"
+   :new-messages-count (rand-int 3)
+   :online (< (rand) 0.5)})
+
+(defn- generate-contacts [n]
+  (map generate-contact (range 1 (inc n))))
+
+(defn load-phone-contacts []
+  (let [ch (chan)]
+    (if fake-contacts?
+      (put! ch {:error nil, :contacts (generate-contacts 10)})
+      (.getAll react-native-contacts
+               (fn [error raw-contacts]
+                 (put! ch
+                       {:error error
+                        :contacts
+                        (when (not error)
+                          (map (fn [contact]
+                                 (merge (generate-contact 1)
+                                        {:name (:givenName contact)
+                                         :photo-path (:thumbnailPath contact)
+                                         :phone-numbers (:phoneNumbers contact)}))
+                               (js->clj raw-contacts :keywordize-keys true)))}))))
+    ch))
+
+(defn load-syng-contacts []
+  (let [contacts (map (fn [contact]
+                        (merge contact
+                               {:delivery-status (if (< (rand) 0.5) :delivered :seen)
+                                :datetime "15:30"
+                                :new-messages-count (rand-int 3)
+                                :online (< (rand) 0.5)}))
+                      (db/get-contacts))]
+    (swap! state/app-state update :contacts-ds
+           #(clone-with-rows % contacts))))
+
+(defn save-syng-contacts [syng-contacts]
+  (db/add-contacts syng-contacts))
diff --git a/src/messenger/models/user_data.cljs b/src/messenger/models/user_data.cljs
index a961947e99..a1175856b0 100644
--- a/src/messenger/models/user_data.cljs
+++ b/src/messenger/models/user_data.cljs
@@ -4,7 +4,7 @@
   (:require [cljs.core.async :as async :refer [chan put! <! >!]]
             [syng-im.protocol.web3 :as web3]
             [messenger.state :as state]
-            [messenger.android.utils :refer [log on-error toast]]))
+            [messenger.utils.utils :refer [log on-error toast]]))
 
 (def ethereum-rpc-url "http://localhost:8545")
 
@@ -50,3 +50,6 @@
                       (put! ch {:error error
                                 :value value}))))
     ch))
+
+(defn set-confirmation-code [code]
+  (swap! state/app-state assoc :confirmation-code code))
diff --git a/src/messenger/services/contacts.cljs b/src/messenger/services/contacts.cljs
new file mode 100644
index 0000000000..c66b978538
--- /dev/null
+++ b/src/messenger/services/contacts.cljs
@@ -0,0 +1,85 @@
+(ns messenger.services.contacts
+  (:require-macros [cljs.core.async.macros :refer [go]])
+  (:require [clojure.string :as cstr]
+            [cljs.core.async :as async :refer [chan put! <!]]
+            [messenger.utils.utils :refer [log on-error http-post]]
+            [messenger.utils.crypt :refer [encrypt]]
+            [messenger.comm.intercom :as intercom :refer [save-user-phone-number]]
+            [messenger.models.contacts :as contacts-model]
+            [syng-im.utils.logging :as log]))
+
+(defn- get-contact-name [phone-contact]
+  (cstr/join " "
+             (filter #(not (cstr/blank? %))
+                     [(:givenName phone-contact)
+                      (:middleName phone-contact)
+                      (:familyName phone-contact)])))
+
+(defn- to-syng-contacts [contacts-by-hash data]
+  (map (fn [server-contact]
+         (let [number-info (get contacts-by-hash
+                                (:phone-number-hash server-contact))
+               phone-contact (:contact number-info)]
+           {:phone-number (:number number-info)
+            :whisper-identity (:whisper-identity server-contact)
+            :name (get-contact-name phone-contact)
+            :photo-path (:photo-path phone-contact)}))
+       (js->clj (:contacts data))))
+
+(defn- get-contacts-by-hash [contacts]
+  (let [numbers-info (reduce (fn [numbers contact]
+                               (into numbers
+                                     (map (fn [c]
+                                            {:number (:number c)
+                                             :contact contact})
+                                          (:phone-numbers contact))))
+                             '()
+                             contacts)]
+    (reduce (fn [m number-info]
+              (let [number (:number number-info)
+                    hash (encrypt number)]
+                (assoc m hash number-info)))
+            {}
+            numbers-info)))
+
+(defn- request-syng-contacts [contacts]
+  (let [contacts-by-hash (get-contacts-by-hash contacts)
+        data (keys contacts-by-hash)
+        ch (chan)]
+    (http-post "get-contacts" {:phone-number-hashes data}
+               (fn [data]
+                 (put! ch
+                       (to-syng-contacts contacts-by-hash data))))
+    ch))
+
+(defn sync-contacts [handler]
+  (go
+    (let [result (<! (contacts-model/load-phone-contacts))]
+      (if-let [error (:error result)]
+        (on-error error)
+        (let [syng-contacts (<! (request-syng-contacts (:contacts result)))]
+          (contacts-model/save-syng-contacts syng-contacts)
+          (handler))))))
+
+(defn- load-syng-contacts []
+  (contacts-model/load-syng-contacts)
+  ;; TODO handle contacts
+  )
+
+
+(defmulti contacts (fn [state id args]
+                     id))
+
+(defmethod contacts :contacts/load-syng-contacts
+  [state id args]
+  (log/info "handling " id " args = " args)
+  (load-syng-contacts))
+
+(defmethod contacts :contacts/sync-contacts
+  [state id args]
+  (log/info "handling " id " args = " args)
+  (sync-contacts args))
+
+(defn contacts-handler [state [id args]]
+  (log/info "user notification: " args)
+  (contacts state id args))
diff --git a/src/messenger/services/server.cljs b/src/messenger/services/server.cljs
index 05669de8fa..d1a798a15f 100644
--- a/src/messenger/services/server.cljs
+++ b/src/messenger/services/server.cljs
@@ -1,20 +1,30 @@
 (ns messenger.services.server
   (:require-macros [cljs.core.async.macros :refer [go]])
   (:require [cljs.core.async :as async :refer [chan put! <!]]
-            [messenger.android.utils :refer [log on-error http-post]]
+            [messenger.utils.utils :refer [log on-error http-post]]
+            [messenger.comm.intercom :as intercom :refer [save-user-phone-number]]
             [syng-im.utils.logging :as log]))
 
 (defmulti server (fn [state id args]
                               id))
 
 (defmethod server :server/sign-up
-  [state id args]
+  [state id {:keys [phone-number whisper-identity handler] :as args}]
   (log/info "handling " id " args = " args)
-  (http-post "sign-up" (select-keys args [:phone-number :whisper-identity])
+  (save-user-phone-number phone-number)
+  (http-post "sign-up" {:phone-number phone-number
+                        :whisper-identity whisper-identity}
              (fn [body]
                (log body)
                ;; TODO replace with core.async
-               ((:handler args)))))
+               (handler))))
+
+(defmethod server :server/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))
 
 (defn server-handler [state [id args]]
   (log/info "user notification: " args)
diff --git a/src/messenger/services/user_data.cljs b/src/messenger/services/user_data.cljs
index 72039f2579..b921d93207 100644
--- a/src/messenger/services/user_data.cljs
+++ b/src/messenger/services/user_data.cljs
@@ -6,8 +6,9 @@
                                                 load-phone-number
                                                 save-whisper-identity
                                                 load-whisper-identity
-                                                new-whisper-identity]]
-            [messenger.android.utils :refer [log on-error]]
+                                                new-whisper-identity
+                                                set-confirmation-code]]
+            [messenger.utils.utils :refer [log on-error]]
             [syng-im.utils.logging :as log]))
 
 (defmulti user-data (fn [state id args]
@@ -41,6 +42,11 @@
               (on-error error)
               (save-whisper-identity (:value result)))))))))
 
+(defmethod user-data :user-data/set-confirmation-code
+  [state id confirmation-code]
+  (log/info "handling " id " args = " confirmation-code)
+  (set-confirmation-code confirmation-code))
+
 (defn user-data-handler [state [id args]]
   (log/info "user notification: " args)
   (user-data state id args))
diff --git a/src/messenger/android/crypt.cljs b/src/messenger/utils/crypt.cljs
similarity index 91%
rename from src/messenger/android/crypt.cljs
rename to src/messenger/utils/crypt.cljs
index 0c015d2844..45ae17decb 100644
--- a/src/messenger/android/crypt.cljs
+++ b/src/messenger/utils/crypt.cljs
@@ -1,4 +1,4 @@
-(ns messenger.android.crypt
+(ns messenger.utils.crypt
   (:require [goog.crypt :refer [byteArrayToHex]])
   (:import goog.crypt.Sha256))
 
diff --git a/src/messenger/android/database.cljs b/src/messenger/utils/database.cljs
similarity index 94%
rename from src/messenger/android/database.cljs
rename to src/messenger/utils/database.cljs
index bb7fa11f62..04ef19f127 100644
--- a/src/messenger/android/database.cljs
+++ b/src/messenger/utils/database.cljs
@@ -1,5 +1,5 @@
-(ns messenger.android.database
-  (:require [messenger.android.utils :refer [log toast http-post]]))
+(ns messenger.utils.database
+  (:require [messenger.utils.utils :refer [log toast http-post]]))
 
 (set! js/Realm (js/require "realm"))
 
diff --git a/src/messenger/android/resources.cljs b/src/messenger/utils/resources.cljs
similarity index 93%
rename from src/messenger/android/resources.cljs
rename to src/messenger/utils/resources.cljs
index 509a52a09a..bb32badba8 100644
--- a/src/messenger/android/resources.cljs
+++ b/src/messenger/utils/resources.cljs
@@ -1,4 +1,4 @@
-(ns messenger.android.resources)
+(ns messenger.utils.resources)
 
 (def logo-icon (js/require "./images/logo.png"))
 (def nav-back-icon (js/require "./images/nav-back.png"))
diff --git a/src/messenger/android/utils.cljs b/src/messenger/utils/utils.cljs
similarity index 94%
rename from src/messenger/android/utils.cljs
rename to src/messenger/utils/utils.cljs
index c3d3b5103a..4da237a1c7 100644
--- a/src/messenger/android/utils.cljs
+++ b/src/messenger/utils/utils.cljs
@@ -1,10 +1,11 @@
-(ns messenger.android.utils
+(ns messenger.utils.utils
   (: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/")
 
 (defn log [obj]
   (.log js/console obj))