iOS 18.2 Heating issues and battery drain

How can I turn off Apple Intelligence permanently?

My phone got heating issues even I normally use normal app.

Define "heating issues."

Being warm or even hot to the touch is not a problem; if your phone is overheating it will shut itself off and tell you that's why.

I have some notifications issues bluetooth stuck wont connet like before

after this update

the **** ? I just bought 16pm and the battery drain is like an ice cream melting under the sun, started using my phone from 7.45 am and then 12.00 pm the battery left is 43%

Yes , I do face both problem after update to ios 18 on my iphone 15. It’s significantly hard to use my battery drain so fast and it’s heat up like crazy.

Ok

iphone 12 , new battery

things I’ve tried

• hard reset of iPhone
• complete reset of iPhone ( erased all data and started from fresh
• deleting every app
• background app refresh all off
• location services off
• dark mode
• changed battery 3 times and tested battery capacity with usb tester ( also swapped it with my gfs iPhone 12 battery that lasts her 2 days just to be super sure )
• i charged phone to 80% , turned phone off and left it off overnight to check if battery is losing charge internally by itself ( it wasn’t)
• iPhone 12 so no apple intelligence to disable
• putting it in airplane mode for a long period
• iPhone in low power mode