If the power and volume buttons on your Samsung phone don't work, you still have several options to try turning on your device:
Use Charger:
Connect your cellphone to the charger.
Sometimes, connecting to a charger will automatically turn on the device.
Use USB Cable to PC:
Connect your cellphone to your computer or laptop using a USB cable.
It can also trigger automatic startup on some devices.
Use Third Party Apps:
If your phone is still on or you can borrow a friend's phone, download an app like "Gravity Screen" or "Power Button to Volume Button" from the Google Play Store.
This app allows you to turn on the screen with a gesture or by using the volume buttons instead of the power button.
ADB (Android Debug Bridge):
This requires more complicated setup and requires your device to have previously enabled USB debug mode.
Connect your cellphone to the computer.
Run the adb reboot command from the computer to restart your device.
Use SIM Card:
On some models, removing and reinserting the SIM card can trigger the phone to turn on automatically.
Take it to Service:
If none of the above methods work, you may need to take your cellphone to an authorized service center for repair.
If you need more detailed guidance on any of these methods, let me know