[Q] g sensor topic

My g sensor has stopped working
I cleared my dalvik cache ,did factory reset;but no change
I am using Karbonn titanium s2 plus and the phone is rooted
Before theproblem,
I downloaded "Pure AndroidL V2 for S5 -KarbonnROMS"
and when I opened the file I found in the apps folder i found one app "speed sensor calibration" and when I tried to install it ,it failed to install
And after that g sensor stopped working

Please,help ?????!!!!!!😢