KORKMAZ: kalibrace a vše se nachází pod *#*#MIUI#*#* (*#*#6484#*#*)
Ne u MTK Hongmi (tam zkusit *#*#64663#*#*)
1. Press to make a call and type the following numbers to get to the hidden menu.
2. *#*#64663#*#*
3. Go to number 7 (proximity sensor)
4. Follow instructions and calibrate the sensor