Yeah of course it was a good idea because I've done it. I actually had two smartphones before. One for texting, music and accessing this forum — the phone I normally used outside — and the other one is for my wallet digital wallet as well as the storage for my important files and notes. Unfortunately, the latter one broke due to excessive gaming . Nevertheless, I can say that it was a good way of securing your account against theft or getting misplaced. But this is only practical if you have two phones already.