Ok, so it’s possible that a Fazebook user was desperately trying to dial 911 and their phone died because of a Fazebook test. Um, even it that never happend I think it is still a Felony to interfere with the phone network. This may be / should be the end of Fazebook. Death by a Billion Lawsuits.
Speaking of 911 calls, I remember there was a bug with Android and/or Android apps that an app can do something that could actually block you from making 911 calls. It seems you can add accounts to the phone system. Teams would add an account every time you would start it up without being logged in. And article I just read to get the details of what happened, it seems Teams would log you out far too much, and you could end up with multiple entries. Over time, it would cause an integer underflow or overflow because of how Google was sorting the accounts. The _flow would crash the phone subsystem when you make 911 calls. I think the first fix Google did was change the sorter to not have the _flow issue by using a function to compare the integers instead of just subtracting them (the integers in question are hash codes). Later they made it so that only the accounts like the one from the SIM card would be considered instead of all the accounts for 911 calls.
Source if you want to read about it yourself. I feel like I might have explained something slightly off.