How to fix my iphone home button and screen sensor?

Yesterday i accidentaly spilled water over my iphone 5s and the home button stopped working. The touchscreen is ok but when i rotate my phone, the image doesn't rotate. I guess some kind of sensor is bugged too. Can i fix it on my own or do i need to give it to a technician?

Reboot

The only thing you could do now is to contact the technical support and in case you need a good app for securing your device, do install Leo Privacy Guard, in order to make your device utmost secure.