Dude Firmware (FW) means in short n simple OS for cell..... it will help u to update u r cell applications, working speed, and lots of things....
u r ans.
1. use screen calibration for touch screen smoothlly working.
2. update u r FW (find for flashing info)
3. FW helps u...
4. FW helps u somtimes... otherwise its hardware problem
if u can bear for Quench XT3 den its nice go with Quench XT3...



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