diff --git a/Telegram-iOS/AppDelegate.swift b/Telegram-iOS/AppDelegate.swift
index d28f404f8e..4cdbf59b49 100644
--- a/Telegram-iOS/AppDelegate.swift
+++ b/Telegram-iOS/AppDelegate.swift
@@ -205,6 +205,23 @@ final class SharedApplicationContext {
         precondition(!testIsLaunched)
         testIsLaunched = true
         
+        do {
+            let documentsPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0]
+            let valueBox = SqliteValueBox(basePath: "\(documentsPath)/test_db", queue: Queue.mainQueue(), encryptionParameters: nil, upgradeProgress:{ _ in })
+            let table = ValueBoxTable(id: 1, keyType: .int64, compactValuesOnCreation: false)
+            let key = ValueBoxKey(length: 8)
+            key.setInt64(0, value: 1234567)
+            valueBox.begin()
+            if valueBox.get(table, key: key) != nil {
+                print("test_db: found")
+            } else {
+                print("test_db: not found")
+            }
+            valueBox.set(table, key: key, value: MemoryBuffer())
+            valueBox.commit()
+            valueBox.begin()
+        }
+        
         let launchStartTime = CFAbsoluteTimeGetCurrent()
         
         let statusBarHost = ApplicationStatusBarHost()
diff --git a/submodules/Display b/submodules/Display
index d2592223e0..a1aecb45d3 160000
--- a/submodules/Display
+++ b/submodules/Display
@@ -1 +1 @@
-Subproject commit d2592223e0e82ddb4de5b94a2b40bbb6e91e0c7d
+Subproject commit a1aecb45d3320ecedf70d6a6f160a402fd4ee437
diff --git a/submodules/Postbox b/submodules/Postbox
index 7d2a5bb3fb..5393f3bb97 160000
--- a/submodules/Postbox
+++ b/submodules/Postbox
@@ -1 +1 @@
-Subproject commit 7d2a5bb3fbf6353850833c178c09060798900b8e
+Subproject commit 5393f3bb9779a41e3fb7048203549de3167937a9
diff --git a/submodules/libtgvoip b/submodules/libtgvoip
index 9b78887eaf..78decc81bf 160000
--- a/submodules/libtgvoip
+++ b/submodules/libtgvoip
@@ -1 +1 @@
-Subproject commit 9b78887eafa3afbcfd405027da02d95d95fd1c8d
+Subproject commit 78decc81bf25cf36ad1b4a9398aa11cb195db9c5