are you a mage as I have that issue when using a mage
Might also be that you have 8 gb of ram, but a lot of things are in the background eating up that ram. Background tasks + ToA might be too much for just a phone. I also notice this game went from a 1.1gb dl to over 1.8gb. Which means a lot got added. Might be your ram maxxing out. There is an error log, even on cellphones. And certain other things like developer mode on your phone, with other 3rd party software. Can monitor the crashing.