App crashes on 12.1.4 on cell network, USA only

Got a very weird crash, right on startup on my Unity game that happens ONLY on:

1. iOS 12.1.4

2. When the phone is on AT&T (as far as I can tell, didn't happen with a few other networks I tried)


Worked fine in 12.1.3


Works fine in Airplane mode or on WiFi.


100% repeatable on multiple devices, but I don't have access to them and can't symbolicate the crash log.


I cannot repeat it on any of my devices as I am not in the US and on a different network.


I am using only two SDKs: Facebook and Game Analytics.


Anyone exprience this?


Nitzan


#0 (null) in __exceptionPreprocess ()
#1 (null) in objc_exception_throw ()
#2 (null) in +[NSObject(NSObject) doesNotRecognizeSelector:] ()
#3 (null) in ___forwarding___ ()
#4 (null) in _CF_forwarding_prep_0 ()
#5 (null) in 0x104160000 ()
#6 (null) in 0x104160000 ()
#7 (null) in -[__NSArrayM enumerateObjectsWithOptions:usingBlock:] ()
#8 (null) in 0x104160000 ()
#9 (null) in 0x104160000 ()
#10 (null) in 0x104160000 ()
#11 (null) in _dispatch_call_block_and_release ()
#12 (null) in _dispatch_client_callout ()
#13 (null) in _dispatch_main_queue_callback_4CF$VARIANT$armv81 ()
#14 (null) in __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ ()
#15 (null) in __CFRunLoopRun ()
#16 (null) in CFRunLoopRunSpecific ()
#17 (null) in GSEventRunModal ()
#18 (null) in UIApplicationMain ()
#19 (null) in 0x104160000 ()