Hey! I bought a used iPhone 5 in october, and in november I checked my battery informations via iBackupBot.. I had a huge draining problem, I can say its 5% better since updates, but still draining in standby mode.. So today I've checked my battery in iBackupBot Do I need to buy another battery, that will fix my draining problem, or what should I do? In Usage statics, the Usage time is so so lower,than Standby time.. Every 1hour, it drains 10%.. Help me please.