Clear your phones cache under settings. Turn it completely off, then back on. It helped my phone a ton. Only one crash per day for two days now. Completed all six fights in AW, got the loot, no crashes. BTW, restarting the phone doesn’t work. It HAS to be turned off. Give it a try.
I have a real upsetting problem with crashes, i lose my point in wars everytime this game crashes and havent even played. Its really frustrating. Just as i am about to face an opponent it crashes and i lose 1 battle point.