SDK crash at app launch on iOS 12.0

[oiledCode]

Description

The sdk crash at app launch on iOS 12.0

Repro Steps

1. Integrate the SDK on an app
2. Initialize the SDK
3. Launch the app on a device running iOS 12.0
4. The SDK crash

Details

The crash is generated by the call -[MSDeviceTracker updateDevice] line 145.
On this line the SDK try to access the serviceSubscriberCellularProviders property of a CTTelephonyNetworkInfo object, and although this property should be available on iOS 12.0 the system raise an unrecognized selector sent to instance xxxx exception.
This clearly smells like an iOS bug, but maybe can be mitigated by an @available(iOS 12.1, *)

1. Which SDK version are you using?
   • e.g. 2.5.0
2. Which OS version did you experience the issue on?
   • e.g. iOS 12.0
3. What device version did you see this error on? Were you using an emulator or a physical device?
   • e.g. iPhone phisical device
4. What language are you using?
   • Objective C
   • Swift

[annakocheshkova]

Thanks for reporting that @oiledCode! We will look into that.

[candostdagdeviren]

Hello! Is there any plan on fixing this soon? We're having the same crash on physical iPad with iOS 12. It is not reproducible on the simulator.

[ilyashumihin]

Hi, @candostdagdeviren!
This bug will be fixed in the next release - 2.5.4.

[Sai]

The #1914 seems not fix the issue because we have collected similar crashes on iOS 12.4.4.

-[MSDeviceTracker updatedDevice]
MSDeviceTracker.m, line 145
SIGABRT: -[CTTelephonyNetworkInfo serviceSubscriberCellularProviders]: unrecognized selector sent to instance 0x283769440

Most affected devices: iPhone 6 Plus
Most affected OS: 12.4.4

The app might still crash if the SDK calling serviceSubscriberCellularProviders above 12.1.

Ref.

if (@available(iOS 12.1, *)) {
  NSDictionary<NSString *, CTCarrier *> *carriers = [telephonyNetworkInfo serviceSubscriberCellularProviders];
  carrier = [self firstCarrier:carriers];
}

[AnastasiaKubova]

Hi, @Sai ! Thanks for getting in touch with us!
I try to reproduce this issue on iPhone 6 Plus iOS 12.4.4, but it works expected for me.
This fix will be released soon. We will notify you when the release is released.

[annakocheshkova]

Hi there! This issue has been fixed in the 3.0.0 release. Please check it and reopen in case there are any issues.