Talk:Random Boost/@comment-203.125.128.250-20150113072540/@comment-26957247-20160105104040

It isn't just the iPhone 4S. It affects most devices. There is a solution to the problem, though, you need to delete the app and re-download it and signing into your line account again. I have tried this before and it works, although my game returned to force quitting after a day or two.