I found my old Samsung galaxy S3 to test game. It looks fine but I can feel it is little laggy sometimes while i am playing. When I tested it with iphone6, no lag and smooth game play. Is it because the phone is old or there is something else wrong? What cause the game to lag?
Yeah. This is because the phone is already pretty old. The iOS counterpart would be an iPhone 4s. They mostly do lag as well.
It is not by phone. I think the problem is the burden of advertising in the background. Try playing with the data and wifi off.