It does. The Signal app for Android does not support being a secondary device. It must be the primary device with a phone number.
In addition, whatever Play Store settings they use excluded all of our tablets, even the one that had a SIM. Manually installing the APK worked for this case, but that didn't really solve our problem.
Signal is not available for Android tablets, which was a deal breaker when I tried to move my family off Telegram.
Healing won't work without copies (RAID) available. However, scrubbing regularly can also allow your drive to detect and correct errors before they become irreparable.
Stuck in kernel code, possibly because they tripped an assert. Even if not, if your distribution enabled hung task detection, the kernel will log backtraces for these processes eventually; by default, after 2 minutes of being stuck.
Don't get into crypto. It's only useful for scams and money laundering.
I've tried, but Signal is just too cumbersome to use. I sorely miss a web client and my family members sorely miss an Android tablet client. This makes it hard to recommend.
Only iPads.