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iPhone 6 Plus, beta 5.
 
Meine is much worse then 9.2.1 (iPhone 6)
[doublepost=1458641856][/doublepost]How could this possible?

I had the battery drain problem with my iPhone 5c, sucking the life out of my battery within 4.5 hours. I updated to El Capitan 10.11.4 Beta 3 on my Mac yesterday and the problem seems to be solved, no more battery drain on my iPhone.

The problem seemed to be a bug in the El Capitan Beta, not the iOS 9.3 Beta.
 
When I was watching YouTube on my 6s while night shift was on, I noticed that the battery was draining a lot faster than before. I don't know if it's because I'm watching video while night shift was on or what.
 
Mine is extremely decreased. iPhone 6S, IOS 9.2.1 i could go on battery for 2 days, now i need to charge it during the first half day, not even 1 day without charging, its ridiculous! Im downgrading to 9.2 right now. Good job Apple!
 
Mine is terrible now. Says my camera is running up50% usage. I have not taken a photo in two days.

Same yesterday, said 65% usage.

Not sure what's going on, but it is destroying my battery.
Sounds like some process is stuck somewhere. Have you tried closing all apps and restarting? Perhaps resetting some settings?
 
When I was on the very last developer beta of 9.3 my battery was really good. After I removed the developer beta profile and installed the final public 9.3 update my battery is not as good as the beta.

Right now on the public release of 9.3 I charge my before I go to sleep and I charge my phone once through out the day.

When I was on the beta I could charge my phone before I sleep, and use my phone the whole day the next day without charging through out the day.
 
I have not noticed a significant difference with my iPad Mini 4, will check out my iPad 3 when I return home from overseas.
 
I often put it into charger or Mac to recharge so there are no significant impact on battery life.
But I think the battery life should be not too bad.
 
When I was watching YouTube on my 6s while night shift was on, I noticed that the battery was draining a lot faster than before. I don't know if it's because I'm watching video while night shift was on or what.

Same! SIGNIFICANT drain. About 1% a minute if not faster.
 
Same! SIGNIFICANT drain. About 1% a minute if not faster.
And this is the result I received from previous unit before exchanging a brand new one (current one) from Apple. 2 minutes, 2%, and sometimes, 1 minute, 3%-4%, especially when playing games.
Current unit is good. At least, I can use it actively about 5 hrs at the end of today without charging. iPhone 6s Plus.
 
Hard reset- check
reset settings- check.
closed all open apps- check
over night asleep chewed up 23%

iPhone 6s

Over night for me was 0% chewed up. :D I did a complete wipe after setting up phone once a few days ago. Closed all open apps. Hardly used the phone for two days, 2 phone calls/1 txt, 4 photos, weather app, Maps, and about 27% chewed up in 48 hrs.

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I stopped using my Mophie case and big surprise, I have better battery life lol. I'm at 3% with 11.5 hours of usage and 29 hours on standby. iPhone 6+
 
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Mine is much worse on my 6S than previous firmwares. Even with low power mode it only lasts 4-5 hours. Time for a reset I think.
 
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