Home News Step 1 — Enter the dialing interface Step 2 — Dial “*#*#6484#*#*” Step 3— Test touch function and LCD display Step 4— For some phones you should Calibration touch. Step 5— If you need to test 10points multi touch, you must install a software. News Accomodate Technical support conmpany business the key differen... How to choose gl... Home Button Repl... How to test scre... REPAIR TOOL for ... six-generation p... phone Series Na... Version of the n... Difference of sp... Different Versio... Versions of Redm... Difference of re... ×