Signal became okay once I understood how to use it without using my mobile carrier's texting number. It would be nice if that were more clear. Also, it "expires" FAR too often for my taste, and each time that happens, I have to relink my other devices; that is an infuriating annoyance. If I can't use ONE stable version for 12 months, it's usefulness, to me, is severely diminished. The updates have become quite tiring.