iPhone 17 battery draining fast after update 26.3

Sunny_M_21 wrote:

Hi all, i have bought iphone 17 on jan 2nd. It was good in initial days with battery. But after 26.3 update battery is draining do fast than usual. I kept all the settings which showed in online like background apps and more but its draining fast. Is anyone facing same issue. Will it be fixed in 26.4 or should i go and complain in apple store

Two iPhone 17 Pro models here and absolutely no battery drain issues at all on iOS 26.3.

You can easily see what is using the most charge on your phone, by opening Settings > Battery and see what is using the charge there. After you update, you should Force Restart your iPhone and you can see how to do that here --> https://support.apple.com/guide/iphone/force-restart-iphone-iph8903c3ee6/ios

And read this --> https://support.apple.com/en-us/120745

Did you just update your iPhone to iOS version 26.3 recently?

Battery drain after an iOS update is very common for a few hours or days. It’s caused by background re‑indexing and other system optimizations.

1. Open Settings ➡️ Battery ➡️ Battery Usage and check if one app is spiking.

2. Open Settings ➡️ Privacy & Security ➡️ Location Services ➡️ set unused apps to While Using.

3. Open Settings ➡️ General ➡️ Background App Refresh ➡️ turn off apps you don’t need.

5. Try and Force Restart your iPhone EXACTLY as shown below and see whether that resolves the issue:

• Press and quickly release Volume UP button
• Press and quickly release Volume DOWN button
• Press and Hold the SIDE button until an Apple logo appears and then release the Side button (Can take up to 20 seconds. (DO NOT release Side Button when invited to Slide Power OFF). 

No need to visit Apple unless the battery charge drops unusually fast.

Axel F.