[TiSA88]

I'm still on 9.3.5 and feeling scared of updating to 10.3 due to the fact many people complained about battery drainage or shutting down when it hits 20/30%

Is it still happening?
I don't want the headache

[peter_78]

Absolutely should you update. I have I iPhone 6S+ and it's super on my 1.5 year old iPhone. And no I have no battery problem with my 10.3.1 update

[Annie_8plus]

Welcome to iMore! I definitely would update. I too have a 6s, and have been very happy. Just be sure to do a backup first!

[wilber1]

Absolutely would update to 10.3 it works smooth on my 6s .

[kataran]

The security that's applied with the update is more than any reason not to update

[TiSA88]

The security that's applied with the update is more than any reason not to update

Battery is really important to me and i can't afford to lose 30%

My battery last for around 8 hours on my 6S Plus.

[TiSA88]

Absolutely would update to 10.3 it works smooth on my 6s .

Welcome to iMore! I definitely would update. I too have a 6s, and have been very happy. Just be sure to do a backup first!

Absolutely should you update. I have I iPhone 6S+ and it's super on my 1.5 year old iPhone. And no I have no battery problem with my 10.3.1 update

How long does your battery last?

[wilber1]

Actually my update is 10.3.1 and I have no problem lasting a full day plus .

[peter_78]

Me unplugged my phone about 9 in the morning and now 12-13 h later after long day with chat through Tapatalk and sync with my Apple Watch and Bluetooth headset and sync my mails account and web and 30 min tv watching during the day and à few call and SMS, I have still at evening 21:30 I still have 16% battery left and I have 10.3.1 with iPhone 6S+

[TiSA88]

Me unplugged my phone about 9 in the morning and now 12-13 h later after long day with chat through Tapatalk and sync with my Apple Watch and Bluetooth headset and sync my mails account and web and 30 min tv watching during the day and à few call and SMS, I have still at evening 21:30 I still have 16% battery left and I have 10.3.1 with iPhone 6S+

I'm feeling that the battery actually improved after updating.. i might be wrong though
Anyway I'm still at 69%.. let's see after more usage.

[BreakingKayfabe]

When I still had my 6S Plus I had no intention of updating to iOS 10 at all unless I absolutely had to. I have a 7 Plus now so I had no choice, but I sort of regret upgrading because I like iOS 9 a lot more.