I have tried it.

You mean usage time decreased and same with standby when screen is off, right?
First are you using it often in places where the LRT travels through the tunnel?
Second Which do you use most? WiFi or Mobile data?
Third Where do you use your phone most? in an office or outdoors?
Fourth What app do you use often? list 5 apps.
Fifth How often do you use your phone in a day?

My phone can last 2 and a half days in standby mode with WiFi and Mobile Data off.
My phone cant last a day with WiFi turned on all the time (inside building).
My phone can last a day with Mobile Data on all the time (inside building).
My phone cant last a day with Mobile Data turned on all the time (outdoors).

I have had terrible battery performance in 10.2, 10.2.1, 10.3 Beta 1, 10.3 Beta 2

The best battery performances I had was in iOS9 and iOS 10.1

You have to remember when it comes to iOS don't update unless an app is not working/unsupported or cant be updated anymore because all this updates do are just improvement's of the iOS launcher.
So why do I update often then? it's because I notice a huge improvement in launcher speed but battery usage will vary for sure with each update.

I use this app to make sure my battery is not the culprit:



as you can see under capacity my phone cant charge fully, it will charge up to 1700mAh only when compared to a new battery which should be 1715mAh.

From my own experience I will be very happy to use the final release of iOS 10.3 for a very long time. I learned my mistake when I updated from iOS 9 to iOS 10 and started having various issues like the weather app and Google Maps is using my location 24/7 365 days even in standby which is so weird.

This post has been edited by JC: Feb 28 2017, 10:30 PM

Battery Life: check device's runtimes by Robert Tkotzyk

https://itunes.apple.com/my/app/battery-lif...1080930585?mt=8

Twitter: https://twitter.com/batterylifeapp?lang=en


SystemGuard - Check system info & statistics by Robert Tkotzyk

https://itunes.apple.com/app/id1171677807

This post has been edited by JC: Mar 1 2017, 07:20 PM

Same here.

I am not experiencing this too.

This post has been edited by JC: Aug 3 2017, 12:38 PM

Thanks for the info, I was wondering about this too. Mine can have 4hours of on screen time including YouTube, WhatsApp, FaceBook and Reddit. If I play any games it will start draining.

What iOS version are you using now? and what version of iOS was causing the problem?