Bad battery on my iphone 6 plus ios 8.2?

Question

hi everyon, i have my iphone 6 plus for about 6-7 days, and im hating my battery life, im a facebook, music and games user (not a really heavy user) and i had an iphone 6 (4"6 inch) and i had 6 hours of screen with my normal usage (youtube, facebook, 1 or 1 and half hours of gaming, 3 hours of music etc etc, facebook)
and on my brand new iphone 6 plus im getting less battery life (4-5 screen hours) with less usage...
i Dont know what i have to do, i came to the apple store and they told me my battery is 100% healthy, and they cant so anything (i can changue my phone for a refurbished one but im pretty scared about the idea of get a refurbished one for a new one, because i dont have the ticket it was a gift)
Someone are experimenting the same issue? What would i do? replace my phone? Im pretty sad because my old phone gaves me more battery than the biggest one...

Answer 1

Try this and see if it helps. Try logging out of iCloud completely for a day or two and see if your battery life gets better. I had this issue and it helped tremendously. I think some people's phones, for some reason, are constantly hitting iCloud, even while asleep, and thus constantly using the battery. One pretty strong indication of this is if you look at the Usage and Standby times in the Battery Usage sections. If they are close in number of hours, then something is using the phone in the background constantly. Standby should, under most usage patterns, be far ahead of Usage. For example, my phone after about 6 hours of up time, showed 3 hours of Usage and 3 hours of Standby time. There was no way I was using the phone for 3 hours. Since logging out of iCloud, that 6 hours is now divided as 5 hours Standby and 1 hour of Usage.
To log out of iCloud, go to Settings > iCloud and at the bottom of the page tap on sign out of iCloud. Do that for a day or two to see how it goes.
Two things you should know (you may already) - 1. You will lose your iCloud backup at night, so if you back up to iCloud you may want to run it before you sign out. If you back up to iTunes on a computer, this will not be as much of an issue;  2. You will also lose Find My Phone. When you log out, it will ask you if you want to log out of Find My Phone. Say yes during your test. You can always log back in.
These thing worked for me. Instead of getting barely 7 hours of life from the phone with limited usage, I now get days of life with a lot heavier usage.
Anyway, hope these suggestions help if you try them.