Check for any power-hungry apps that might be running in the background. Also, reduce screen brightness, and turn off Wi-Fi, Bluetooth, and GPS when not in use.
Screen Freezing
Restart your phone to clear out any temporary software bugs. If the problem persists, consider performing a factory reset after backing up all your data.
Device Stuck on Boot Screen
Try doing a soft reset. If it doesn't work, you may need to perform a hard reset.
Overheating
Avoid using your phone while it's charging and close unnecessary apps running in the background.
Trouble Connecting to Wi-Fi:
Restart both your phone and your router. If this doesn't work, forget the network on your phone and re-add it.
Bluetooth Issues
Make sure the device you're trying to connect with is in pairing mode. Also, clear the Bluetooth cache and data
Text Messages Not Sending
Check if your device has good network coverage. Also, check the message center number in your message settings.
Network Problem
Try restarting your phone or turning on airplane mode for a few seconds before turning it off again.
Camera Issues
Clear the camera app's cache and data. If this doesn't work, try resetting the camera settings to default.