iPhone overheating and battery drain since update

After updating to iOS 18.2, it's normal for your iPhone 15 Plus to experience temporary overheating and battery drain due to background processes like indexing and app updates. This should stabilize within a day or two. Make sure all apps are updated, check battery usage in settings, and restart your phone. If it continues, contact Apple Support. I recently bought a Bosch battery and noticed it came with a new Bosch battery sticker from , confirming it was a genuine product—something to keep in mind if battery replacement becomes necessary.