Since almost day one, My iPhone 12 charge wont last throughout the day. I am having to charge it midday. The phone is brand new. Battery health is at 100%. it doesn’t appear that any apps are using a lot of battery. I turned off all background. Sometimes my phone will get hot, the brightness goes low by itself. also, my screen is glitchy, and sometimes won’t respond to touch.
iPhone 12
Hello Turbo76,
Let's start by making sure your iPhone 12 is all up to date using the steps below:
1. Back up your device using iCloud or your computer.
2. Plug your device into power and connect to the internet with Wi-Fi.
3. Go to Settings > General, then tap Software Update.
4. If you see two software update options available, choose the one that you want to install.
5. Tap Install Now. If you see Download and Install instead, tap it to download the update, enter your passcode, then tap Install Now. If you don't know your passcode, learn what to do.
You can also find those steps in this resource: Update your iPhone, iPad, or iPod touch - Apple Support
Additionally, make sure to check for any updates for your apps: How to manually update apps on your Apple device - Apple Support
Those steps should help to further isolate any potential software conflicts.
Should those behaviors still persist afterwards, the additional items from this resource may be helpful: About iOS or iPadOS performance on your iPhone, iPad, or iPod touch - Apple Support
Take care.
IPhone 12 battery issue
