diff --git a/posthog-v3/posthog-android/api/posthog-android.api b/posthog-v3/posthog-android/api/posthog-android.api
index ca6c5b94..9bd82203 100644
--- a/posthog-v3/posthog-android/api/posthog-android.api
+++ b/posthog-v3/posthog-android/api/posthog-android.api
@@ -8,12 +8,3 @@ public final class com/posthog/android/PostHogAndroid$Companion {
 	public final fun with (Landroid/content/Context;Lcom/posthog/PostHogConfig;)Lcom/posthog/PostHog;
 }
 
-public final class com/posthog/android/internal/PostHogAdvertisingIdReader {
-	public fun <init> ()V
-}
-
-public final class com/posthog/android/internal/PostHogUtilsKt {
-	public static final fun getPackageInfo (Landroid/content/Context;Lcom/posthog/PostHogConfig;)Landroid/content/pm/PackageInfo;
-	public static final fun getVersionCode (Landroid/content/pm/PackageInfo;)J
-}
-
diff --git a/posthog-v3/posthog-android/build.gradle.kts b/posthog-v3/posthog-android/build.gradle.kts
index 9227e9b2..3df14faf 100644
--- a/posthog-v3/posthog-android/build.gradle.kts
+++ b/posthog-v3/posthog-android/build.gradle.kts
@@ -28,6 +28,8 @@ android {
     kotlinOptions {
         jvmTarget = PosthogBuildConfig.Build.JAVA_VERSION.toString()
         kotlinOptions.languageVersion = PosthogBuildConfig.Kotlin.KOTLIN_COMPATIBILITY
+        // remove when https://youtrack.jetbrains.com/issue/KT-37652 is fixed
+        freeCompilerArgs += "-Xexplicit-api=strict"
     }
 
     testOptions {
@@ -47,6 +49,8 @@ android {
     }
 }
 
+// See https://youtrack.jetbrains.com/issue/KT-37652
+// Also see kotlinOptions.freeCompilerArgs
 kotlin {
     explicitApi()
 }
diff --git a/posthog-v3/posthog-android/src/main/java/com/posthog/android/PostHogAndroid.kt b/posthog-v3/posthog-android/src/main/java/com/posthog/android/PostHogAndroid.kt
index 623fcb9c..12cdc7cf 100644
--- a/posthog-v3/posthog-android/src/main/java/com/posthog/android/PostHogAndroid.kt
+++ b/posthog-v3/posthog-android/src/main/java/com/posthog/android/PostHogAndroid.kt
@@ -1,24 +1,42 @@
 package com.posthog.android
 
+import android.app.Application
 import android.content.Context
 import com.posthog.PostHog
 import com.posthog.PostHogConfig
-import com.posthog.android.internal.PostHogLogger
+import com.posthog.PostHogPrintLogger
+import com.posthog.android.internal.PostHogActivityLifecycleCallback
+import com.posthog.android.internal.PostHogAndroidContext
+import com.posthog.android.internal.PostHogAndroidLogger
 
 public class PostHogAndroid {
-    companion object {
+    public companion object {
         private val lock = Any()
 
         public fun setup(context: Context, config: PostHogConfig) {
             synchronized(lock) {
-                config.logger = PostHogLogger(config)
+                setAndroidConfig(context.appContext(), config)
+
                 PostHog.setup(config)
             }
         }
 
         public fun with(context: Context, config: PostHogConfig): PostHog {
-            config.logger = PostHogLogger(config)
+            setAndroidConfig(context.appContext(), config)
             return PostHog.with(config)
         }
+
+        private fun setAndroidConfig(context: Context, config: PostHogConfig) {
+            config.logger = if (config.logger is PostHogPrintLogger) PostHogAndroidLogger(config) else config.logger
+            config.context = config.context ?: PostHogAndroidContext(context)
+
+            if (context is Application) {
+                config.integrations.add(PostHogActivityLifecycleCallback(context))
+            }
+        }
+
+        private fun Context.appContext(): Context {
+            return applicationContext ?: this
+        }
     }
 }
diff --git a/posthog-v3/posthog-android/src/main/java/com/posthog/android/internal/PostHogActivityLifecycleCallback.kt b/posthog-v3/posthog-android/src/main/java/com/posthog/android/internal/PostHogActivityLifecycleCallback.kt
index b2a386d7..ad4b0259 100644
--- a/posthog-v3/posthog-android/src/main/java/com/posthog/android/internal/PostHogActivityLifecycleCallback.kt
+++ b/posthog-v3/posthog-android/src/main/java/com/posthog/android/internal/PostHogActivityLifecycleCallback.kt
@@ -1,6 +1,40 @@
 package com.posthog.android.internal
 
+import android.app.Activity
+import android.app.Application
+import android.app.Application.ActivityLifecycleCallbacks
+import android.os.Bundle
+import com.posthog.PostHogIntegration
+
 // ActivityLifecycleCallbacks, IntegrationOperation, PostHogActivityLifecycleCallbacks
-internal class PostHogActivityLifecycleCallback {
+internal class PostHogActivityLifecycleCallback(private val application: Application) : ActivityLifecycleCallbacks, PostHogIntegration {
     // TODO: lifecycle events, deeplinks, record screen views
+    override fun onActivityCreated(activity: Activity, savedInstanceState: Bundle?) {
+    }
+
+    override fun onActivityStarted(activity: Activity) {
+    }
+
+    override fun onActivityResumed(activity: Activity) {
+    }
+
+    override fun onActivityPaused(activity: Activity) {
+    }
+
+    override fun onActivityStopped(activity: Activity) {
+    }
+
+    override fun onActivitySaveInstanceState(activity: Activity, outState: Bundle) {
+    }
+
+    override fun onActivityDestroyed(activity: Activity) {
+    }
+
+    override fun install() {
+        application.registerActivityLifecycleCallbacks(this)
+    }
+
+    override fun uninstall() {
+        application.unregisterActivityLifecycleCallbacks(this)
+    }
 }
diff --git a/posthog-v3/posthog-android/src/main/java/com/posthog/android/internal/PostHogAdvertisingIdReader.kt b/posthog-v3/posthog-android/src/main/java/com/posthog/android/internal/PostHogAdvertisingIdReader.kt
index 8bfc580c..b7f9dabd 100644
--- a/posthog-v3/posthog-android/src/main/java/com/posthog/android/internal/PostHogAdvertisingIdReader.kt
+++ b/posthog-v3/posthog-android/src/main/java/com/posthog/android/internal/PostHogAdvertisingIdReader.kt
@@ -1,4 +1,19 @@
 package com.posthog.android.internal
 
-// GetAdvertisingIdTask
-class PostHogAdvertisingIdReader
+import android.content.Context
+
+// GetAdvertisingIdTask, Utils
+internal class PostHogAdvertisingIdReader(context: Context) {
+    fun getGooglePlayServicesAdvertisingID(): Pair<String, Boolean>? {
+        return null
+    }
+
+    fun getAmazonFireAdvertisingID(): Pair<String, Boolean>? {
+        return null
+    }
+
+    fun getDeviceId(): String? {
+        // TODO depends on DEFAULT_COLLECT_DEVICE_ID
+        return null
+    }
+}
diff --git a/posthog-v3/posthog-android/src/main/java/com/posthog/android/internal/PostHogAndroidContext.kt b/posthog-v3/posthog-android/src/main/java/com/posthog/android/internal/PostHogAndroidContext.kt
new file mode 100644
index 00000000..2aea2fa9
--- /dev/null
+++ b/posthog-v3/posthog-android/src/main/java/com/posthog/android/internal/PostHogAndroidContext.kt
@@ -0,0 +1,16 @@
+package com.posthog.android.internal
+
+import android.content.Context
+import com.posthog.PostHogContext
+
+// PostHogContext
+
+internal class PostHogAndroidContext(context: Context) : PostHogContext {
+    override fun getStaticContext(): Map<String, Any>? {
+        return null
+    }
+
+    override fun getDynamicContext(): Map<String, Any>? {
+        return null
+    }
+}
diff --git a/posthog-v3/posthog-android/src/main/java/com/posthog/android/internal/PostHogLogger.kt b/posthog-v3/posthog-android/src/main/java/com/posthog/android/internal/PostHogAndroidLogger.kt
similarity index 74%
rename from posthog-v3/posthog-android/src/main/java/com/posthog/android/internal/PostHogLogger.kt
rename to posthog-v3/posthog-android/src/main/java/com/posthog/android/internal/PostHogAndroidLogger.kt
index 3bfac86d..1b2f92cc 100644
--- a/posthog-v3/posthog-android/src/main/java/com/posthog/android/internal/PostHogLogger.kt
+++ b/posthog-v3/posthog-android/src/main/java/com/posthog/android/internal/PostHogAndroidLogger.kt
@@ -4,7 +4,7 @@ import android.util.Log
 import com.posthog.PostHogConfig
 import com.posthog.PostHogLogger
 
-internal class PostHogLogger(private val config: PostHogConfig) : PostHogLogger {
+internal class PostHogAndroidLogger(private val config: PostHogConfig) : PostHogLogger {
     override fun log(message: String) {
         if (config.debug) {
             Log.println(Log.DEBUG, null, message)
diff --git a/posthog-v3/posthog-android/src/main/java/com/posthog/android/internal/PostHogUtils.kt b/posthog-v3/posthog-android/src/main/java/com/posthog/android/internal/PostHogUtils.kt
index dd2f6a32..f2385b9f 100644
--- a/posthog-v3/posthog-android/src/main/java/com/posthog/android/internal/PostHogUtils.kt
+++ b/posthog-v3/posthog-android/src/main/java/com/posthog/android/internal/PostHogUtils.kt
@@ -6,7 +6,7 @@ import android.content.pm.PackageManager
 import android.os.Build
 import com.posthog.PostHogConfig
 
-fun getPackageInfo(
+internal fun getPackageInfo(
     context: Context,
     config: PostHogConfig,
 ): PackageInfo? {
@@ -27,10 +27,21 @@ fun getPackageInfo(
     }
 }
 
-fun getVersionCode(packageInfo: PackageInfo): Long {
+internal fun getVersionCode(packageInfo: PackageInfo): Long {
     return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
         packageInfo.longVersionCode
     } else {
         packageInfo.versionCode.toLong()
     }
 }
+
+internal fun hasPermission(context: Context): Boolean {
+    return false
+}
+internal fun hasFeature(context: Context): Boolean {
+    return false
+}
+
+internal fun isConnected(context: Context): Boolean {
+    return false
+}
diff --git a/posthog-v3/posthog/api/posthog.api b/posthog-v3/posthog/api/posthog.api
index 9f6af9cd..1c5bee11 100644
--- a/posthog-v3/posthog/api/posthog.api
+++ b/posthog-v3/posthog/api/posthog.api
@@ -43,18 +43,21 @@ public final class com/posthog/PostHog$Companion {
 }
 
 public final class com/posthog/PostHogConfig {
-	public fun <init> (Ljava/lang/String;Ljava/lang/String;ZIIIILcom/posthog/PostHogDataMode;Lcom/posthog/PostHogEncryption;)V
-	public synthetic fun <init> (Ljava/lang/String;Ljava/lang/String;ZIIIILcom/posthog/PostHogDataMode;Lcom/posthog/PostHogEncryption;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public fun <init> (Ljava/lang/String;Ljava/lang/String;ZIIIILcom/posthog/PostHogDataMode;Lcom/posthog/PostHogEncryption;Ljava/util/List;)V
+	public synthetic fun <init> (Ljava/lang/String;Ljava/lang/String;ZIIIILcom/posthog/PostHogDataMode;Lcom/posthog/PostHogEncryption;Ljava/util/List;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
 	public final fun getApiKey ()Ljava/lang/String;
+	public final fun getContext ()Lcom/posthog/PostHogContext;
 	public final fun getDataMode ()Lcom/posthog/PostHogDataMode;
 	public final fun getDebug ()Z
 	public final fun getEncryption ()Lcom/posthog/PostHogEncryption;
 	public final fun getFlushAt ()I
 	public final fun getFlushIntervalSeconds ()I
 	public final fun getHost ()Ljava/lang/String;
+	public final fun getIntegrations ()Ljava/util/List;
 	public final fun getLogger ()Lcom/posthog/PostHogLogger;
 	public final fun getMaxBatchSize ()I
 	public final fun getMaxQueueSize ()I
+	public final fun setContext (Lcom/posthog/PostHogContext;)V
 	public final fun setDataMode (Lcom/posthog/PostHogDataMode;)V
 	public final fun setDebug (Z)V
 	public final fun setEncryption (Lcom/posthog/PostHogEncryption;)V
@@ -65,6 +68,11 @@ public final class com/posthog/PostHogConfig {
 	public final fun setMaxQueueSize (I)V
 }
 
+public abstract interface class com/posthog/PostHogContext {
+	public abstract fun getDynamicContext ()Ljava/util/Map;
+	public abstract fun getStaticContext ()Ljava/util/Map;
+}
+
 public final class com/posthog/PostHogDataMode : java/lang/Enum {
 	public static final field ANY Lcom/posthog/PostHogDataMode;
 	public static final field WIFI Lcom/posthog/PostHogDataMode;
@@ -94,7 +102,24 @@ public final class com/posthog/PostHogEvent {
 	public fun toString ()Ljava/lang/String;
 }
 
+public abstract interface class com/posthog/PostHogIntegration {
+	public abstract fun install ()V
+	public abstract fun uninstall ()V
+}
+
+public final class com/posthog/PostHogIntegration$DefaultImpls {
+	public static fun uninstall (Lcom/posthog/PostHogIntegration;)V
+}
+
 public abstract interface class com/posthog/PostHogLogger {
 	public abstract fun log (Ljava/lang/String;)V
 }
 
+public abstract interface class com/posthog/PostHogPreferences {
+}
+
+public final class com/posthog/PostHogPrintLogger : com/posthog/PostHogLogger {
+	public fun <init> (Lcom/posthog/PostHogConfig;)V
+	public fun log (Ljava/lang/String;)V
+}
+
diff --git a/posthog-v3/posthog/src/main/java/com/posthog/PostHog.kt b/posthog-v3/posthog/src/main/java/com/posthog/PostHog.kt
index b4fc99fb..2a67f2f6 100644
--- a/posthog-v3/posthog/src/main/java/com/posthog/PostHog.kt
+++ b/posthog-v3/posthog/src/main/java/com/posthog/PostHog.kt
@@ -18,6 +18,7 @@ public class PostHog {
     private var featureFlags: PostHogFeatureFlags? = null
     private var api: PostHogApi? = null
     private var queue: PostHogQueue? = null
+    private var context: PostHogContext? = null
 
     // TODO: flushTimer, reachability, flagCallReported
 
@@ -41,6 +42,10 @@ public class PostHog {
             this.featureFlags = featureFlags
             enabled = true
 
+            config.integrations.forEach {
+                it.install()
+            }
+
             queue.start()
             loadFeatureFlagsRequest()
         }
@@ -49,6 +54,11 @@ public class PostHog {
     public fun close() {
         synchronized(lock) {
             enabled = false
+
+            config?.integrations?.forEach {
+                it.uninstall()
+            }
+
             queue?.stop()
         }
     }
@@ -79,6 +89,14 @@ public class PostHog {
 
         // distinctId is always present but it has to be nullable because the SDK may be disabled
         // TODO: missing static, dynamic context
+        context?.getStaticContext()?.let {
+            props.putAll(it)
+        }
+
+        context?.getDynamicContext()?.let {
+            props.putAll(it)
+        }
+
         distinctId?.let {
             props["distinct_id"] = it
         }
@@ -264,5 +282,7 @@ public class PostHog {
         }
 
         // TODO: add other methods
+
+        // DISCUSS: Middleware, what does it stand for?
     }
 }
diff --git a/posthog-v3/posthog/src/main/java/com/posthog/PostHogConfig.kt b/posthog-v3/posthog/src/main/java/com/posthog/PostHogConfig.kt
index c4c281f7..c5029071 100644
--- a/posthog-v3/posthog/src/main/java/com/posthog/PostHogConfig.kt
+++ b/posthog-v3/posthog/src/main/java/com/posthog/PostHogConfig.kt
@@ -1,7 +1,5 @@
 package com.posthog
 
-import com.posthog.internal.PostHogPrintLogger
-
 public class PostHogConfig(
     // apiKey and host are immutable due to offline caching
     public val apiKey: String,
@@ -15,8 +13,10 @@ public class PostHogConfig(
 
     public var dataMode: PostHogDataMode = PostHogDataMode.ANY,
     public var encryption: PostHogEncryption = PostHogEncryption.PostHogEncryptionNone(),
+    public val integrations: MutableList<PostHogIntegration> = mutableListOf(),
 ) {
     public var logger: PostHogLogger = PostHogPrintLogger(this)
+    public var context: PostHogContext? = null
 
     // TODO: read the repo name and version
     internal var userAgent: String = "posthog-android/3.0.0"
diff --git a/posthog-v3/posthog/src/main/java/com/posthog/PostHogContext.kt b/posthog-v3/posthog/src/main/java/com/posthog/PostHogContext.kt
new file mode 100644
index 00000000..2b5f778c
--- /dev/null
+++ b/posthog-v3/posthog/src/main/java/com/posthog/PostHogContext.kt
@@ -0,0 +1,7 @@
+package com.posthog
+
+public interface PostHogContext {
+    public fun getStaticContext(): Map<String, Any>?
+
+    public fun getDynamicContext(): Map<String, Any>?
+}
diff --git a/posthog-v3/posthog/src/main/java/com/posthog/PostHogIntegration.kt b/posthog-v3/posthog/src/main/java/com/posthog/PostHogIntegration.kt
new file mode 100644
index 00000000..b9c7981a
--- /dev/null
+++ b/posthog-v3/posthog/src/main/java/com/posthog/PostHogIntegration.kt
@@ -0,0 +1,8 @@
+package com.posthog
+
+public interface PostHogIntegration {
+    public fun install()
+
+    public fun uninstall() {
+    }
+}
diff --git a/posthog-v3/posthog/src/main/java/com/posthog/PostHogPreferences.kt b/posthog-v3/posthog/src/main/java/com/posthog/PostHogPreferences.kt
new file mode 100644
index 00000000..0c2bfc2a
--- /dev/null
+++ b/posthog-v3/posthog/src/main/java/com/posthog/PostHogPreferences.kt
@@ -0,0 +1,4 @@
+package com.posthog
+
+// Properties
+public interface PostHogPreferences
diff --git a/posthog-v3/posthog/src/main/java/com/posthog/PostHogPrintLogger.kt b/posthog-v3/posthog/src/main/java/com/posthog/PostHogPrintLogger.kt
new file mode 100644
index 00000000..d2a95dbc
--- /dev/null
+++ b/posthog-v3/posthog/src/main/java/com/posthog/PostHogPrintLogger.kt
@@ -0,0 +1,10 @@
+package com.posthog
+
+public class PostHogPrintLogger(private val config: PostHogConfig) : PostHogLogger {
+    override fun log(message: String) {
+        if (!config.debug) {
+            return
+        }
+        println(message)
+    }
+}
diff --git a/posthog-v3/posthog/src/main/java/com/posthog/internal/PostHogApi.kt b/posthog-v3/posthog/src/main/java/com/posthog/internal/PostHogApi.kt
index e51761f8..d1001a2b 100644
--- a/posthog-v3/posthog/src/main/java/com/posthog/internal/PostHogApi.kt
+++ b/posthog-v3/posthog/src/main/java/com/posthog/internal/PostHogApi.kt
@@ -13,6 +13,7 @@ import java.io.OutputStream
 import java.util.Date
 
 internal class PostHogApi(private val config: PostHogConfig) {
+    // TODO: DEFAULT_READ_TIMEOUT_MILLIS, DEFAULT_CONNECT_TIMEOUT_MILLIS
     private val client = OkHttpClient.Builder()
         .addInterceptor(GzipRequestInterceptor(config))
         .build()
@@ -46,6 +47,7 @@ internal class PostHogApi(private val config: PostHogConfig) {
 //  "sent_at": "2023-09-13T12:05:30.326Z",
 // }
 //        """.trimIndent()
+        // TODO: MAX_PAYLOAD_SIZE, MAX_BATCH_SIZE
         val request = makeRequest("${config.host}/batch") {
             val writer = it.bufferedWriter()
             batch.sentAt = Date()
diff --git a/posthog-v3/posthog/src/main/java/com/posthog/internal/PostHogFeatureFlags.kt b/posthog-v3/posthog/src/main/java/com/posthog/internal/PostHogFeatureFlags.kt
index 170c9bb2..19b16c18 100644
--- a/posthog-v3/posthog/src/main/java/com/posthog/internal/PostHogFeatureFlags.kt
+++ b/posthog-v3/posthog/src/main/java/com/posthog/internal/PostHogFeatureFlags.kt
@@ -4,6 +4,8 @@ import com.posthog.PostHogConfig
 import java.util.concurrent.Executors
 import java.util.concurrent.atomic.AtomicBoolean
 
+// TODO: ENABLED_FEATURE_FLAGS_KEY
+
 internal class PostHogFeatureFlags(private val config: PostHogConfig, private val api: PostHogApi) {
     private val executor = Executors.newSingleThreadScheduledExecutor(PostHogThreadFactory("PostHogDecideThread"))
 
diff --git a/posthog-v3/posthog/src/main/java/com/posthog/internal/PostHogPrintLogger.kt b/posthog-v3/posthog/src/main/java/com/posthog/internal/PostHogPrintLogger.kt
deleted file mode 100644
index eaafc8dc..00000000
--- a/posthog-v3/posthog/src/main/java/com/posthog/internal/PostHogPrintLogger.kt
+++ /dev/null
@@ -1,13 +0,0 @@
-package com.posthog.internal
-
-import com.posthog.PostHogConfig
-import com.posthog.PostHogLogger
-
-internal class PostHogPrintLogger(private val config: PostHogConfig) : PostHogLogger {
-    override fun log(message: String) {
-        if (!config.debug) {
-            return
-        }
-        println(message)
-    }
-}