Hello, I bought S4 2 months ago and when I received, its sensors were already dusted. I didn't mind it by then but my front camera also got dusted that I was not able to take clear pictures. So today I opened up the phone and cleared both sensors and camera. Everything was working properly but after 4 hours again my proximity sensor was not working. I cannot always clean the damn thing. So is there a way to avoid dust getting into the phone?
Read more: How to avoid Samsung Galaxy S4 sensors getting dusted?