diff --git a/android/build.gradle.kts b/android/build.gradle.kts
index 7bb08ca..b835298 100644
--- a/android/build.gradle.kts
+++ b/android/build.gradle.kts
@@ -121,6 +121,8 @@ dependencies {
     implementation(libs.ktor.client.auth)
     implementation(libs.ktor.client.core)
     implementation(libs.ktor.client.cio)
+    implementation(libs.ktor.client.content.negotiation)
+    implementation(libs.ktor.serialization.kotlinx.json)
 
     debugImplementation(libs.androidx.compose.ui.test.manifest)
 
diff --git a/android/src/main/kotlin/xyz/magicalbits/smsremote/conversation/Conversation.kt b/android/src/main/kotlin/xyz/magicalbits/smsremote/conversation/Conversation.kt
index 71c83b3..64bee4b 100644
--- a/android/src/main/kotlin/xyz/magicalbits/smsremote/conversation/Conversation.kt
+++ b/android/src/main/kotlin/xyz/magicalbits/smsremote/conversation/Conversation.kt
@@ -89,10 +89,10 @@ import androidx.compose.ui.unit.dp
 import xyz.magicalbits.smsremote.FunctionalityNotAvailablePopup
 import xyz.magicalbits.smsremote.R
 import xyz.magicalbits.smsremote.components.JetchatAppBar
-import xyz.magicalbits.smsremote.data.exampleUiState
 import xyz.magicalbits.smsremote.theme.JetchatTheme
 import kotlinx.coroutines.launch
 import xyz.magicalbits.smsremote.data.exampleUiStateNew
+import xyz.magicalbits.smsremote.network.NetworkClient
 
 /**
  * Entry point for a conversation screen.
@@ -168,9 +168,8 @@ fun ConversationContent(
     Scaffold(
         topBar = {
             ChannelNameBar(
-                channelName = uiState.phoneNumber,
-                // TODO remove?
-                channelMembers = 2,
+                channelName = uiState.remotePhoneNumber,
+                channelMembers = 2, // TODO remove?
                 onNavIconPressed = onNavIconPressed,
                 scrollBehavior = scrollBehavior,
             )
@@ -205,6 +204,11 @@ fun ConversationContent(
                     uiState.addMessage(
                         Message(authorMe, content, timeNow),
                     )
+                    scope.launch {
+                        val networkClient = NetworkClient()
+                        // FIXME
+//                        networkClient.sendSmsMessage(content, uiState.localPhoneNumber, uiState.remotePhoneNumber)
+                    }
                 },
                 resetScroll = {
                     scope.launch {
diff --git a/android/src/main/kotlin/xyz/magicalbits/smsremote/conversation/ConversationViewModel.kt b/android/src/main/kotlin/xyz/magicalbits/smsremote/conversation/ConversationViewModel.kt
index ed77983..2e19b5b 100644
--- a/android/src/main/kotlin/xyz/magicalbits/smsremote/conversation/ConversationViewModel.kt
+++ b/android/src/main/kotlin/xyz/magicalbits/smsremote/conversation/ConversationViewModel.kt
@@ -9,13 +9,13 @@ import kotlinx.coroutines.launch
 import xyz.magicalbits.smsremote.network.NetworkClient
 
 class ConversationViewModel : ViewModel() {
-    private var phoneNumber: String = ""
+    private var remotePhoneNumber: String = ""
     private val _conversationData = MutableLiveData<ConversationScreenState>()
     val conversationData: LiveData<ConversationScreenState> = _conversationData
 
     fun setConversationData(phoneNumber: String?) {
         if (phoneNumber != null) {
-            this.phoneNumber = phoneNumber
+            this.remotePhoneNumber = phoneNumber
 
             var messageDtoList: List<NetworkClient.SmsMessageDto> = listOf()
             viewModelScope.launch {
@@ -24,7 +24,7 @@ class ConversationViewModel : ViewModel() {
             }.invokeOnCompletion {
                 _conversationData.value =
                     ConversationScreenState(
-                        phoneNumber = this.phoneNumber,
+                        remotePhoneNumber = this.remotePhoneNumber,
                         initialMessages = messageDtoList.map {
                             Message(
                                 if (it.msg_type == "INCOMING") {
@@ -46,7 +46,7 @@ class ConversationViewModel : ViewModel() {
 }
 
 data class ConversationScreenState(
-    val phoneNumber: String,
+    val remotePhoneNumber: String,
     val initialMessages: List<Message>,
 ) {
     private val _messages: MutableList<Message> = initialMessages.toMutableStateList()
diff --git a/android/src/main/kotlin/xyz/magicalbits/smsremote/data/FakeData.kt b/android/src/main/kotlin/xyz/magicalbits/smsremote/data/FakeData.kt
index 62b2521..6a78b9c 100644
--- a/android/src/main/kotlin/xyz/magicalbits/smsremote/data/FakeData.kt
+++ b/android/src/main/kotlin/xyz/magicalbits/smsremote/data/FakeData.kt
@@ -35,7 +35,7 @@ val unreadMessages = initialMessages.filter { it.author != "me" }
 
 val exampleUiStateNew =
     ConversationScreenState(
-        phoneNumber = "",
+        remotePhoneNumber = "",
         initialMessages = mutableListOf()
     )
 
diff --git a/android/src/main/kotlin/xyz/magicalbits/smsremote/device/DeviceFragment.kt b/android/src/main/kotlin/xyz/magicalbits/smsremote/device/DeviceFragment.kt
index 297d523..3d64681 100644
--- a/android/src/main/kotlin/xyz/magicalbits/smsremote/device/DeviceFragment.kt
+++ b/android/src/main/kotlin/xyz/magicalbits/smsremote/device/DeviceFragment.kt
@@ -75,7 +75,7 @@ class DeviceFragment : Fragment() {
                             onPhoneNumberClicked = {
                                 val args = Bundle(1)
                                 args.putString("phoneNumber", it)
-                                navController.navigate(R.id.action_device_to_conversation, args)
+                                navController.navigate(R.id.action_device_to_sim, args)
                             },
                         )
                     }
diff --git a/android/src/main/kotlin/xyz/magicalbits/smsremote/network/NetworkClient.kt b/android/src/main/kotlin/xyz/magicalbits/smsremote/network/NetworkClient.kt
index e6f9460..4b10f8d 100644
--- a/android/src/main/kotlin/xyz/magicalbits/smsremote/network/NetworkClient.kt
+++ b/android/src/main/kotlin/xyz/magicalbits/smsremote/network/NetworkClient.kt
@@ -5,8 +5,14 @@ import io.ktor.client.engine.cio.CIO
 import io.ktor.client.plugins.auth.Auth
 import io.ktor.client.plugins.auth.providers.BearerTokens
 import io.ktor.client.plugins.auth.providers.bearer
+import io.ktor.client.plugins.contentnegotiation.ContentNegotiation
 import io.ktor.client.request.get
+import io.ktor.client.request.post
+import io.ktor.client.request.setBody
 import io.ktor.client.statement.bodyAsText
+import io.ktor.http.ContentType
+import io.ktor.http.contentType
+import io.ktor.serialization.kotlinx.json.json
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext
 import kotlinx.serialization.Serializable
@@ -20,6 +26,9 @@ class NetworkClient {
     // TODO ask user for creds, call login endpoint, store tokens in local encrypted storage
 
     private val networkClient = HttpClient(CIO) {
+        install(ContentNegotiation) {
+            json()
+        }
         install(Auth) {
             bearer {
                 // TODO configure refresh token so it refreshes the access token
@@ -43,6 +52,12 @@ class NetworkClient {
     @Serializable
     data class SmsMessageDto(val content: String, val ts_received: Int, val ts_sent: Int, val msg_type: String, val local_phone_number: String, val remote_phone_number: String)
 
+    @Serializable
+    data class OutgoingMessage(val content: String, val local_phone_number: String, val remote_phone_number: String)
+
+    @Serializable
+    data class ConversationPreviewDto(val remote_phone_number: String, val last_message_content: String, val message_timestamp: Int)
+
     // GET /api/v1/devices
     suspend fun getDevices(): List<DeviceDto> {
         // TODO handle non-200 status codes
@@ -70,4 +85,24 @@ class NetworkClient {
         val data = networkClient.get("$apiBaseUrl/api/v1/sms-messages?local_phone_number=$encodedPhoneNumber").bodyAsText()
         return Json.decodeFromString(data)
     }
+
+    // POST /api/v1/send-message
+    suspend fun sendSmsMessage(content: String, localPhoneNumber: String, remotePhoneNumber: String) {
+        println("sending SMS message: content=$content, lPN=$localPhoneNumber, rPN=$remotePhoneNumber")
+        val response = networkClient.post("$apiBaseUrl/api/v1/send-message") {
+            contentType(ContentType.Application.Json)
+            setBody(OutgoingMessage(content, localPhoneNumber, remotePhoneNumber))
+        }
+        println("sending SMS message: status code ${response.status}")
+    }
+
+    // GET /api/v1/conversation-previews
+    suspend fun getConversationPreviews(simPhoneNumber: String): List<ConversationPreviewDto> {
+        // TODO extract encoder to a function here or to a utility class
+        val encodedPhoneNumber = withContext(Dispatchers.IO) {
+            URLEncoder.encode(simPhoneNumber, "UTF-8")
+        }
+        val response = networkClient.get("$apiBaseUrl/api/v1/conversation-previews?local_phone_number=$encodedPhoneNumber")
+        return Json.decodeFromString(response.bodyAsText())
+    }
 }
diff --git a/android/src/main/kotlin/xyz/magicalbits/smsremote/sim/Sim.kt b/android/src/main/kotlin/xyz/magicalbits/smsremote/sim/Sim.kt
new file mode 100644
index 0000000..73627c3
--- /dev/null
+++ b/android/src/main/kotlin/xyz/magicalbits/smsremote/sim/Sim.kt
@@ -0,0 +1,119 @@
+package xyz.magicalbits.smsremote.sim
+
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.wrapContentHeight
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material3.HorizontalDivider
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.input.nestedscroll.NestedScrollConnection
+import androidx.compose.ui.input.nestedscroll.nestedScroll
+import androidx.compose.ui.platform.rememberNestedScrollInteropConnection
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import xyz.magicalbits.smsremote.R
+import xyz.magicalbits.smsremote.components.baselineHeight
+import xyz.magicalbits.smsremote.theme.JetchatTheme
+
+@Composable
+fun SimScreen(
+    simData: SimScreenState,
+    nestedScrollInteropConnection: NestedScrollConnection = rememberNestedScrollInteropConnection(),
+    onConversationClicked: (String) -> Unit = { },
+) {
+    val scrollState = rememberScrollState()
+
+    Box(
+        modifier = Modifier.fillMaxSize().nestedScroll(nestedScrollInteropConnection)
+    ) {
+        Surface {
+            Column(modifier = Modifier.fillMaxSize().verticalScroll(scrollState).padding(horizontal = 16.dp)) {
+                Name(simData, Modifier.baselineHeight(32.dp))
+
+                Spacer(modifier = Modifier.height(8.dp))
+
+                simData.conversations.forEach {
+                    ConversationPreview(it, onConversationClicked)
+                }
+            }
+        }
+    }
+}
+
+@Composable
+private fun Name(
+    simData: SimScreenState,
+    modifier: Modifier
+) {
+    Text(
+        text = simData.phoneNumber,
+        modifier = modifier,
+        style = MaterialTheme.typography.headlineSmall
+    )
+}
+
+@Composable
+private fun ConversationPreview(
+    conversation: ConversationRowState,
+    onConversationClicked: (String) -> Unit,
+) {
+    Column(modifier = Modifier
+        .clickable(
+            onClick = {
+                onConversationClicked(conversation.phoneNumber)
+            }
+        )
+    ) {
+        HorizontalDivider()
+        Row(
+            modifier = Modifier
+                .wrapContentHeight()
+                .padding(start = 16.dp, end = 16.dp)
+        ) {
+            Text(text = conversation.phoneNumber)
+            Spacer(modifier = Modifier.weight(1f))
+            Text(text = conversation.messageTimestamp.toString())
+        }
+        Row(
+            modifier = Modifier
+                .padding(start = 16.dp, end = 16.dp)
+        ) {
+            Text(text = conversation.lastMessage)
+        }
+    }
+}
+
+@Preview
+@Composable
+fun SimScreenPreview() {
+    JetchatTheme {
+        SimScreen(
+            simData = SimScreenState(
+                phoneNumber = "+420123456789",
+                conversations = listOf(
+                    ConversationRowState("+15558880000", "last msg", 12345),
+                    ConversationRowState("+15558880000", "last msg", 12345),
+                    ConversationRowState("+15558880000", "last msg", 12345),
+                )
+            )
+        )
+    }
+}
+
+@Composable
+fun SimError() {
+    Text(stringResource(R.string.sim_error))
+}
+
diff --git a/android/src/main/kotlin/xyz/magicalbits/smsremote/sim/SimFragment.kt b/android/src/main/kotlin/xyz/magicalbits/smsremote/sim/SimFragment.kt
new file mode 100644
index 0000000..525b10e
--- /dev/null
+++ b/android/src/main/kotlin/xyz/magicalbits/smsremote/sim/SimFragment.kt
@@ -0,0 +1,95 @@
+package xyz.magicalbits.smsremote.sim
+
+import android.content.Context
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.compose.foundation.layout.wrapContentSize
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.livedata.observeAsState
+import androidx.compose.ui.ExperimentalComposeUiApi
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.ComposeView
+import androidx.compose.ui.platform.rememberNestedScrollInteropConnection
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.activityViewModels
+import androidx.fragment.app.viewModels
+import androidx.navigation.NavController
+import androidx.navigation.findNavController
+import xyz.magicalbits.smsremote.MainViewModel
+import xyz.magicalbits.smsremote.R
+import xyz.magicalbits.smsremote.components.JetchatAppBar
+import xyz.magicalbits.smsremote.theme.JetchatTheme
+
+class SimFragment : Fragment() {
+    private val viewModel: SimViewModel by viewModels()
+    private val activityViewModel: MainViewModel by activityViewModels()
+
+    override fun onAttach(context: Context) {
+        super.onAttach(context)
+        // Consider using safe args plugin
+        val phoneNumber = arguments?.getString("phoneNumber")
+        viewModel.setSimData(phoneNumber)
+    }
+
+    @OptIn(ExperimentalComposeUiApi::class, ExperimentalMaterial3Api::class)
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View {
+        val rootView: View = inflater.inflate(R.layout.fragment_profile, container, false)
+
+        rootView.findViewById<ComposeView>(R.id.toolbar_compose_view).apply {
+            setContent {
+                JetchatTheme {
+                    JetchatAppBar(
+                        // Reset the minimum bounds that are passed to the root of a compose tree
+                        modifier = Modifier.wrapContentSize(),
+                        onNavIconPressed = { activityViewModel.openDrawer() },
+                        title = { },
+                    )
+                }
+            }
+        }
+
+        rootView.findViewById<ComposeView>(R.id.profile_compose_view).apply {
+            setContent {
+                val simData by viewModel.simData.observeAsState()
+                val nestedScrollInteropConnection = rememberNestedScrollInteropConnection()
+
+                JetchatTheme {
+                    // TODO flip if condition after integrating API call
+                    if (simData != null) {
+                        SimError()
+                        println("calling sim error")
+                    } else {
+                        val navController: NavController = rootView.findNavController()
+                        SimScreen(
+//                            simData = simData!!,
+                            // TODO remove fake data after integrating API call
+                            simData = SimScreenState(
+                                phoneNumber = "+420123456789",
+                                conversations = listOf(
+                                    ConversationRowState("+15558880000", "last msg", 12345),
+                                    ConversationRowState("+15558880111", "last msg", 12345),
+                                    ConversationRowState("+15558880333", "last msg", 12345),
+                                )
+                            ),
+                            nestedScrollInteropConnection = nestedScrollInteropConnection,
+                            onConversationClicked = {
+                                val args = Bundle(1)
+                                args.putString("phoneNumber", it)
+                                navController.navigate(R.id.action_sim_to_conversation, args)
+                            },
+                        )
+                    }
+                }
+            }
+        }
+
+        return rootView
+    }
+}
\ No newline at end of file
diff --git a/android/src/main/kotlin/xyz/magicalbits/smsremote/sim/SimViewModel.kt b/android/src/main/kotlin/xyz/magicalbits/smsremote/sim/SimViewModel.kt
new file mode 100644
index 0000000..be219c3
--- /dev/null
+++ b/android/src/main/kotlin/xyz/magicalbits/smsremote/sim/SimViewModel.kt
@@ -0,0 +1,56 @@
+package xyz.magicalbits.smsremote.sim
+
+import androidx.compose.runtime.Immutable
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import kotlinx.coroutines.launch
+import xyz.magicalbits.smsremote.network.NetworkClient
+
+class SimViewModel : ViewModel() {
+    private var simPhoneNumber: String = ""
+    private val _simConversations = MutableLiveData<SimScreenState>()
+    val simData: LiveData<SimScreenState> = _simConversations
+
+    fun setSimData(phoneNumber: String?) {
+        if (phoneNumber != null) {
+            simPhoneNumber = phoneNumber
+
+            var conversationDtoList: List<NetworkClient.ConversationPreviewDto> = listOf()
+            // TODO uncomment after adding the corresponding API endpoint
+//            viewModelScope.launch {
+//                val networkClient = NetworkClient()
+//                conversationDtoList = networkClient.getConversationPreviews(simPhoneNumber)
+//                println("conv previews: $conversationDtoList")
+//            }.invokeOnCompletion {
+//                _simConversations.value =
+//                    SimScreenState(
+//                        phoneNumber = simPhoneNumber,
+//                        conversations = conversationDtoList.map { convertFromDto(it) }.toList()
+//                    )
+//            }
+        }
+    }
+}
+
+fun convertFromDto(conversation: NetworkClient.ConversationPreviewDto): ConversationRowState {
+    return ConversationRowState(
+        phoneNumber = conversation.remote_phone_number,
+        lastMessage = conversation.last_message_content,
+        messageTimestamp = conversation.message_timestamp,
+    )
+}
+
+@Immutable
+data class SimScreenState(
+    val phoneNumber: String,
+    val conversations: List<ConversationRowState>,
+)
+
+@Immutable
+data class ConversationRowState(
+    val phoneNumber: String,
+    val lastMessage: String,
+    val messageTimestamp: Int,
+)
diff --git a/android/src/main/res/navigation/mobile_navigation.xml b/android/src/main/res/navigation/mobile_navigation.xml
index eac44a3..71f0c68 100644
--- a/android/src/main/res/navigation/mobile_navigation.xml
+++ b/android/src/main/res/navigation/mobile_navigation.xml
@@ -50,7 +50,20 @@
             android:name="type"
             app:argType="string" />
         <action
-            android:id="@+id/action_device_to_conversation"
+            android:id="@+id/action_device_to_sim"
+            app:destination="@id/nav_sim"
+            />
+    </fragment>
+
+    <fragment
+        android:id="@+id/nav_sim"
+        android:name="xyz.magicalbits.smsremote.sim.SimFragment"
+        android:label="Sim">
+        <argument
+            android:name="phoneNumber"
+            app:argType="string" />
+        <action
+            android:id="@+id/action_sim_to_conversation"
             app:destination="@id/nav_conversation"
             />
     </fragment>
diff --git a/android/src/main/res/values/strings.xml b/android/src/main/res/values/strings.xml
index d4a0159..722cef9 100644
--- a/android/src/main/res/values/strings.xml
+++ b/android/src/main/res/values/strings.xml
@@ -53,6 +53,9 @@
     <!-- Device -->
     <string name="device_error">There was an error loading the device</string>
 
+    <!-- Sim -->
+    <string name="sim_error">There was an error loading the SIM</string>
+
     <!-- Accessibility descriptions -->
 
     <string name="emoji_selector_desc">Emoji selector</string>
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index cc907f0..2b8b44d 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -151,6 +151,8 @@ kotlinx-serialization-json = { module = "org.jetbrains.kotlinx:kotlinx-serializa
 ktor-client-auth = { module = "io.ktor:ktor-client-auth", version.ref = "ktor-client"}
 ktor-client-core = { module = "io.ktor:ktor-client-core", version.ref = "ktor-client"}
 ktor-client-cio = { module = "io.ktor:ktor-client-cio", version.ref = "ktor-client"}
+ktor-client-content-negotiation = { module = "io.ktor:ktor-client-content-negotiation", version.ref = "ktor-client"}
+ktor-serialization-kotlinx-json = { module = "io.ktor:ktor-serialization-kotlinx-json", version.ref = "ktor-client"}
 okhttp-logging = { module = "com.squareup.okhttp3:logging-interceptor", version.ref = "okhttp" }
 okhttp3 = { module = "com.squareup.okhttp3:okhttp", version.ref = "okhttp" }
 play-services-wearable = { module = "com.google.android.gms:play-services-wearable", version.ref = "play-services-wearable" }