App crash while using cellular network with low signal points calling NSURLSession ?

Can you reproduce this yourself?

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Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

I can't able to reproduce it Only happen for customer iPad.

I can't able to reproduce it

OK.

I very much doubt that this is related to the cellular signal strength per se, but rather it’s trigger by poor networking conditions. Try using Network Link Conditioner to replicate such conditions and see if that helps you reproduce it.

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Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

Thank you so much for your response .

I have tried Network Link Conditioner to reproduce the crash issues but can't able to re-create it . is there other way to find the crash where it happen. but our customer getting this crash via TestFlight build .

So this latest report indicates a crash in your code:

Thread 0 name:
Thread 0 Crashed:
0   libobjc.A.dylib … objc_msgSend + 32
1   RantCell        … 0x100a84000 + 230524
2   CoreFoundation  … _signalEventSync + 216 (CFStream.c:626)

You’re using a NSStream (or CFStream) and frame 2 is the CF infrastructure calling your stream delegate (frame 1). This then referenced an invalid object, which caused a crash in the Objective-C runtime (frame 0).

I recommend that you symbolicate this crash report to uncover the identity of the code in frame 1.

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Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"