Hi everyone, well, i have seen many individuals complaining about the errors that occur on their iPhones; therefore, that makes me worried cuz tomorrow I will buy an iPhone 6s

. So I just want to know if it is okay to restore from backup using my iCloud once i buy the new phone, or will a problem occur ? Another question is that these issues like:- (showing the wrong battery percentage, home button freezing when pressing it, or I dunno, getting warmer) did these happen to you people? If so, may I know how to fix'em ?
Thnxx