iPhone 5S No Touch 

The best technician and a humble man from the way I always listen to Mr. Mark on his every video. You are a gift to this universe. All your videos are like the all time favorite movies that one can watch it many times. Very inspirational. Keep up the good work Mr. Mark

I find these short videos you are doing brilliant as they are full of knowledge and skill - Thanks

Miss your repair videos Man!!

The one you replace was U12 (63 pins), not related to Touch IC ? Actually U15 (99 pins) is Touch IC ? That the black one on the bottom ? I am confuse about this !

sharp less than 10 minutes ic repair. man,you must be bored..but it's still great job done

sorry, but if the touch does not respond to the touch to unlock the code, the touch chip should be the U15, The U12 what is it for? thank you.

Hi, what solder paste you use?

bro cost?

sage ic (u15)is not telated to touch ??