Battery Draining fast after ios 16.3.1

Please go through the following links.

• iPhone Battery and Performance - Apple Support (IN)

Protect & Prolong the life of your iPhone's Battery: Batteries - Maximising Performance - Apple (IN)

Try some of these options too.

1. Avoid Screen Mirroring
2. Put on Low Power Mode
3. Put Auto-Lock on (1 min):- with the Low power mode it will be 30 Sec
4. Disable Push notifications for apps you do not use often
5. Keep your iPhone Facedown to prevent notifications to light up the screen
6. Enable Auto-Brightness:- Settings > General > Accessibility > Display Accommodations > Auto-Brightness [Enable]
7. When possible, manually lower the brightness from Control Center
8. If you want to watch continuous Videos/Movies. Stream it on TV or a Monitor
9. Don't force close apps; Apps that are not on the frontend screen are paused by the system to save energy. Apps require more energy to re-launch. Apps that are open in the background use large memory is a myth and quitting them is counterproductive
10. Location services may please be allowed only while using the app. Avoid the "Always" option wherever available
11. Set your iPhone to fetch email & Calendar data from the internet less frequently
12. Turning off Background App Refresh 
13. Charge before it drops below 20-30%
14. Periodically Check the Battery Health (Settings > Battery > Battery Health)

How about instead of telling us to stop doing this and stop doing that with things we always do on our phones, how about Apple stops making updates on our phones that constantly drains the battery in the blink of an eye. Most people's battery life is fine until Apple "has" to do updates that don't really do anything but drains the battery life.

Unhelpful. I bought my iPhone so I could use it and relax. This complaint is just - bith my and my wife’s phones are losing battery charge hand over fist since ‘down’grading to v16.3.1. That’s clearly Apple’s fault - they’ve cocked up again!

100% agree. My phone fully charged this am now less than 5 hrs has 17%

made a phone call no open apps. Not even my music & the battery almost gone.

LT user so yeah seem this off & on over years from Applre updates but never to this severity.

FYI on a 14 & 14Pro.

Pro not used at all (except will be now as back up to this one! Until Apple releases the “fix” to this “non” issue.)

very irritated.

So tell us decade+ users something we don’t already know. Goid info for the “newbies” but nothing for us longtimers.

I expect better QA from Apple dev/qa groups; especially for a longtime known recurring issue due to system updates.

Also noticed the unexpected battery drain happening on my 12 mini.