Using proximity in smartphone is a good option ?


if i use app to switch off and on my phone using proximity sensor will it be problem in future.... because i have already repaired my power on off button for two times in a year..... what other option i can have to avoid damaging my power button .. .thanks in advance. . .:)
please suggest me apps to on my screen and off my screen without touching power button .....plz thanks in advance.... becuz many apps which ..i tried to use didnt work well with my phone .. ..:)