If your phone gets too hot under normal use, it could be a sign of a serious firmware problem or hardware problem. Owners will need to perform some basic troubleshooting steps to determine what the problem is and whether they can fix it themselves. Personally, I’ve had overheating issues on my phone before due to firmware and app related issues. So if you facing the same problem, don’t panic! Here you will get complete tutorial to fix this overheating issue.

Power off your Samsung Galaxy S9 and Galaxy S9 plus, wait 10-15 seconds, then power it back on. Now play a game or watch a video to see if your Galaxy S9 plus is warm.9
Safe Mode Method
Hide all downloaded apps on your device after turning on safe mode on your Galaxy S9 and S9 plus. Check your Galaxy S9 plus overheating or warming up now. If no issues are found, it means a third-party app is causing this issue. Now exit safe mode and uninstall installed third-party apps one by one and see if the problem is fixed or not.
Factory reset Galaxy S9 and Galaxy S9 plus
It will delete all your phone personal and other data. Now, before you factory reset your Galaxy S9 and Galaxy S9 plus, back up and restore your important data on your device.
- Go to Settings on your Galaxy S9 and S9 plus
- Tap Backup & Reset.
- Tap Factory Reset.
- Tap Reset Phone.
- Tap Clear All.
- Now restart your Samsung Galaxy S9 and Galaxy S9 plus devices and see if it fixes the Galaxy S9 warm or overheating issue.
Still facing issues? It is advised to move towards third party software. Android data Recovery Tool is one among effective tool to solve all the android associated problems.