Board Thread:Questions and Answers/@comment-26894914-20160717110841/@comment-26178810-20160717124117

Go to the game's settings and tap "Recover/sync data...". It will returns your items and stuff. But sadly, it doesn't recover your friends. If you did 't got your account back, the common account problems are the internet and possibly the new device for the data to transfer. Least that's all my advice that I can give to you.