16.5 1 (c) massive battery drain

Hello Greenscotty,

The Rapid Security Response update should have no effects on your battery. It fixed an issue in Safari and that was it, it did not make many system wide changes, if at all. You can learn about what these updates are here - What Are Rapid Security Response Updates? - Apple Community.

I'd recommend checking your battery settings.

1. Open Settings
2. Scroll down and tap on Battery

Look at your graphs from the Last 24 Hours and the Last 10 Days.

1. Are you using your iPhone more?
2. What apps are contributing to battery drainage. Are you using them more?

On either graph, tap on the graph where you see significant (massive) battery drainage. What apps were being used that caused this?

You can learn more about batteries and how to maximize them here:

1. Batteries - Apple
2. Batteries - Maximizing Performance - Apple

I'd recommend turning on the following:

1. Open Settings
2. Scroll down and tap on Battery
3. Tap Battery Health & Charging
4. Toggle on Optimized Battery Charging

AND

1. Open Settings
2. Scroll down and tap on Display & Brightness
3. Tap Auto-Lock
4. Select any of the times, I would not recommended selecting Never

Thats not true, battery graph is no help at all and yes after 16.5.1 c battery just drain

Could you share you battery health graphs and what is causing the drainage?

The battery doesn't just drain. Those graphs will tell you why it's draining and then we can work from there.

Exactly same on mine Iphone 11 since 16.5.1 c

60% at 10pm, no usage, 2% at 7am

Battery health 96%

Same

my phone dies overnight

since update

starting with a full charge

I Hope Apple fixes this..

i fly a lot and I’m afraid that when I land my phone is dead