Hello all. This is just my opinion, but I played a lot on an Android device (Galaxy grand prime) and had issues w lag pretty badly. Examples are: When attacking/shielding it would take a long time for game processes to happen (opening menus, etc)  -Also when combining materials in the forge, it would take awhile to go through and combine all of them because of the lag. Recently I needed to get a new phone, and decided on an iPhone 7 plus. The difference is night and day. I can't believe I played so long on the other device. Going in and out of menus is very fast and shielding is awesome! lol. So much quicker now. I don't worry so much when attacking anymore ;)