[G3 Q&A, Help & Troubleshooting] shaarky:
Getting sudden reboots during a call or two/three seconds after the connection is established. ;-( Also frequent loosing Wifi settings after reboot (tried repairing cache, didn't work). I have the logs again but there is nothing useful I guess...

LAST_KMSG is empty even when I took the log immediately, others - I don't know. Is it time maybe for clean flash ?

Searching for Exceptions is getting following findings :

W/System.err( 1742): java.lang.NullPointerException: Attempt to invoke interface method 'int android.database.Cursor.getColumnIndexOrThrow(java.lang.String)' on a null object reference
W/System.err( 1742):	at o.mB.D(:30)
W/System.err( 1742):	at o.Ad.run(:116)
W/System.err( 1742):	at android.os.Handler.handleCallback(Handler.java:739)
W/System.err( 1742):	at android.os.Handler.dispatchMessage(Handler.java:95)
W/System.err( 1742):	at android.os.Looper.loop(Looper.java:135)
W/System.err( 1742):	at android.os.HandlerThread.run(HandlerThread.java:61)

W/ContextImpl( 3697): Calling a method in the system process without a qualified user: android.app.ContextImpl.startService:1732 android.content.ContextWrapper.startService:522 android.content.ContextWrapper.startService:522 com.android.settings.bluetooth.DockEventReceiver.beginStartingService:134 com.android.settings.bluetooth.DockEventReceiver.onReceive:115
I/ActivityManager( 1124): Start proc 4791:com.fsck.k9/u0a175 for broadcast com.fsck.k9/.service.BootReceiver
W/BroadcastQueue( 1124): Exception when sending broadcast to ComponentInfo{com.android.bluetooth/com.android.bluetooth.pbap.BluetoothPbapReceiver}
W/BroadcastQueue( 1124): android.os.DeadObjectException
W/BroadcastQueue( 1124):	at android.os.BinderProxy.transactNative(Native Method)
W/BroadcastQueue( 1124):	at android.os.BinderProxy.transact(Binder.java:496)
W/BroadcastQueue( 1124):	at android.app.ApplicationThreadProxy.scheduleReceiver(ApplicationThreadNative.java:861)
W/BroadcastQueue( 1124):	at com.android.server.am.BroadcastQueue.processCurBroadcastLocked(BroadcastQueue.java:252)
W/BroadcastQueue( 1124):	at com.android.server.am.BroadcastQueue.processNextBroadcast(BroadcastQueue.java:925)
W/BroadcastQueue( 1124):	at com.android.server.am.ActivityManagerService.finishReceiver(ActivityManagerService.java:16738)
W/BroadcastQueue( 1124):	at android.app.ActivityManagerNative.onTransact(ActivityManagerNative.java:471)
W/BroadcastQueue( 1124):	at com.android.server.am.ActivityManagerService.onTransact(ActivityManagerService.java:2333)
W/BroadcastQueue( 1124):	at android.os.Binder.execTransact(Binder.java:446)
I/ActivityManager( 1124): Start proc 4820:com.android.bluetooth/1002 for broadcast com.android.bluetooth/.pbap.BluetoothPbapReceiver

W/System.err( 1742): java.lang.NullPointerException: Attempt to invoke interface method 'int android.database.Cursor.getColumnIndexOrThrow(java.lang.String)' on a null object reference
W/System.err( 1742):	at o.mB.D(:30)
W/System.err( 1742):	at o.Ad.run(:116)
W/System.err( 1742):	at android.os.Handler.handleCallback(Handler.java:739)
W/System.err( 1742):	at android.os.Handler.dispatchMessage(Handler.java:95)
W/System.err( 1742):	at android.os.Looper.loop(Looper.java:135)
W/System.err( 1742):	at android.os.HandlerThread.run(HandlerThread.java:61)

/Babel_medialoader( 5336): Failed to request image
E/Babel_medialoader( 5336): java.lang.NullPointerException: Attempt to invoke virtual method 'bfl bfg.a(java.lang.String)' on a null object reference
E/Babel_medialoader( 5336):	at bfn.a(SourceFile:120)
E/Babel_medialoader( 5336):	at afj.a(SourceFile:222)
E/Babel_medialoader( 5336):	at afj.b_(SourceFile:156)
E/Babel_medialoader( 5336):	at cjw.c(SourceFile:323)
E/Babel_medialoader( 5336):	at cjw.a(SourceFile:311)
E/Babel_medialoader( 5336):	at ciq.a(SourceFile:23)
E/Babel_medialoader( 5336):	at cit.run(SourceFile:362)
E/Babel_medialoader( 5336):	at java.lang.Thread.run(Thread.java:818)
W/Babel ( 5336): Media failed to load:Base://lh4.googleusercontent.com/-HnMTqaPBMLc/AAAAAAAAAAI/AAAAAAAAVgA/fcV8JGUC-fQ/photo.jpg Account=None Load:https://lh4.googleusercontent.com/-HnMTqaPBMLc/AAAAAAAAAAI/AAAAAAAAVgA/fcV8JGUC-fQ/s152-k-no/photo.jpg key=//lh4.googleusercontent.com/-HnMTqaPBMLc/AAAAAAAAAAI/AAAAAAAAVgA/fcV8JGUC-fQ/photo.jpgs152-k-no-rounded save:false
E/JavaBinder( 1124): !!! FAILED BINDER TRANSACTION !!!
W/BroadcastQueue( 1124): Exception when sending broadcast to ComponentInfo{com.painless.pc/com.painless.pc.PCWidgetActivity}
W/BroadcastQueue( 1124): android.os.TransactionTooLargeException
W/BroadcastQueue( 1124):	at android.os.BinderProxy.transactNative(Native Method)
W/BroadcastQueue( 1124):	at android.os.BinderProxy.transact(Binder.java:496)
W/BroadcastQueue( 1124):	at android.app.ApplicationThreadProxy.scheduleReceiver(ApplicationThreadNative.java:861)
W/BroadcastQueue( 1124):	at com.android.server.am.BroadcastQueue.processCurBroadcastLocked(BroadcastQueue.java:252)
W/BroadcastQueue( 1124):	at com.android.server.am.BroadcastQueue.processNextBroadcast(BroadcastQueue.java:925)
W/BroadcastQueue( 1124):	at com.android.server.am.ActivityManagerService.finishReceiver(ActivityManagerService.java:16738)
W/BroadcastQueue( 1124):	at android.app.ActivityManagerNative.onTransact(ActivityManagerNative.java:471)
W/BroadcastQueue( 1124):	at com.android.server.am.ActivityManagerService.onTransact(ActivityManagerService.java:2333)
W/BroadcastQueue( 1124):	at android.os.Binder.execTransact(Binder.java:446)