CTTelephonyNetworkInfo Crash in iOS 13.3.1, iPhone 8 Plus

Here is the crash message, can anyone help me to sovle it?


# Version: 7.1.0 (200.2003091736)

# Issue ID: 0c524b3dc585196cbe7ed564a4d841f3

# Session ID: 30ad28258bdf47d4873df879a4e534cf_DNE_0_v2

# Date: 2020-03-14T08:36:00Z

# OS Version: 13.3.1 (17D50)

# Device: iPhone 8 Plus

# RAM Free: 1.5%

# Disk Free: 22.3%


#0. Crashed: com.apple.main-thread

0 CoreFoundation 0x1adf9e444 -[__NSDictionaryM objectForKeyedSubscript:] + 144

1 CoreTelephony 0x1b2862640 -[CTTelephonyNetworkInfo updateRat:descriptor:] + 140

2 CoreTelephony 0x1b2862534 -[CTTelephonyNetworkInfo queryRatForDescriptor:] + 392

3 CoreTelephony 0x1b28622f0 -[CTTelephonyNetworkInfo queryRat] + 236

4 CoreTelephony 0x1b285ff90 -[CTTelephonyNetworkInfo initWithClient:] + 928

5 CoreTelephony 0x1b285fb90 -[CTTelephonyNetworkInfo init] + 92


Here is a part of core codes:

CTTelephonyNetworkInfo *telephonyNetworkInfo = [[CTTelephonyNetworkInfo alloc] init];

CTCarrier *carrier = telephonyNetworkInfo.subscriberCellularProvider;

NSString *serviceCarrierName = carrier.carrierName;


I use telephonyNetworkInfo, which is a temporary variable, to get the carrier's name. When I need a new carrier's name, I will use CTTelephonyNetworkInfo class to initialize a new one again. Is there a problem?

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And I can't find that mentions 65936906, can you provide a clickable link, please?

No. For the full story here, see my Bug Reporting: How and Why? post.

Here's the full crash log

That crash report is kinda mushed, and it clearly indicates that there’s a third-party crash reporter in play, which is never a good idea [1], but…

AFAICT the crash happens when your app fetches the dataServiceIdentifier property:

1 CoreTelephony     … -[CTTelephonyNetworkInfo dataServiceIdentifier] (in CoreTelephony) + 120 …
2 rls.com.xxxy.***  … -[XXNetworkUtil currentCarrier] + 2792088 …

What is it using that property for?

The reason I ask is that, on modern systems, most of CT is pointless because a lot of properties now return placeholder values. However, I’m not sure about the fate of dataServiceIdentifier, and so I’m curious what you’re doing with it.

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[1] See Implementing Your Own Crash Reporter.

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