It’s hard to offer insight here without a full Apple crash report. Does anyone have one of those? If so, please post it here.
See Posting a Crash Report for advice on how to do that.
Do these [iOS] versions correspond to the RC or the GM?
You can tell that from the format of the build numbers. For example, in 23C5027f you have:
- 23 — This maps to the major version number, in this case iOS 26.
- C — This maps to the minor version number [1], making it iOS 26.2.
- 50 — This contains the build number prefix; see below for more on that.
- 27 — This is the actual build number.
- f — This is something internal that I’m not going to go in to.
In seed builds we prefix the build number with a digit indicating the type of build, padding it up to three digits with leading zeroes. So 5027 is build 27 with a build type of 5 [2].
In released builds we don’t do this padding. For example, the release build of iOS 26.2 running on my iPhone is 23C55. So, if you see a crash report with a 4 digit build number, that’s not a release build.
Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"
[1] Note this mapping is not always as straightforward as A means the .0 version, B means the .1 version, and so on.
[2] Don’t ask me what all the build types are. I don’t know off the top of my head, but I’m pretty sure we don’t discuss them all publicly.
