[Mystake]

That sounds like something was wrong with your specific phone.

By bricking I mean the phone is unrecoverable, can't be reset, never used again, as in it's next use is as a paperweight.
My phone never has had an issue with signal loss and coming back to full like yours. The most I've ever had was having to reset my network settings but that's it.


I'll at least say my iPhone is out of warranty, dunno bout OP