My dad's phone got the 4.4.3 update yesterday. All of a sudden, his messaging (Hangouts) stopped working correctly. Sometimes, when he tried to send a text, Hangouts would just crash. He could still receive messages without a problem, but he was unable to send them. I thought it might just have something to with the bad weather/power outages because my Nexus 5 was having some problems sending messages (but my Hangouts wasn't crashing). But more recently, I have not had any problems, but now Hangouts crashes every time without fail on his Moto G. I tried using different SMS apps, but they all crashed when I tried to send messages, too (but receiving is fine). I've also restarted the phone, toggled airplane mode, removed and replaced the SIM, reverted Hangouts to its original, and quick booted and erased the phone's cache all to no avail. Could this problem have been caused by the update? Is the phone crapping out? Is it a carrier problem? Something else? Advice?