Mobile Phones Repairing Tutorials

Problems :A lways show hands free logo on screen,no sound in ringer Solutions: Please before apply this work clean and heat red marked check its parts on pcb.then replace or remove usb and change hands free switching risistance near the usb connector cearfully. These jumper are fully tested by me and its me creation please tell me if you solve your problems.  

Solutions :First clean and heat usb connector if problem not solved then remove this and clean usb connector point with petrol or ctc(carbon tetra cleaner).This is solution one if Not Solved then try to repair with solution two.  Here is solution two witch is 10000000000000000000000% tested by me . Try to make direct jumper on black hands free switcher risistanse witch is red circule marked on pcb

 Problems:low Signal,No network,Searching network always. Solutions:please remove pa and make jumpers directly as this picture shown below with jumper wire.

Solutions: Please before apply this work clean and heat red marked check its parts on pcb.then replace or remove usb and change hands free switching risistance near the usb connector cearfully. These jumper are fully tested by me and its me creation please tell me if you solve your problems. i am waiting your coments.

use orignal charger and batrye if problem not solved then make these jumper as picture show bellow cearfully red line start from usb connector to charging ic stage of pcb its tested by me 100%you can try its at your own risk

Solutions.               First check polarity mising key on pcb key pad touch in dondition of no polarity of check meter then conform that key pad ic if its broken or missing try to remove key pad ic first replace with new if new key pad ic not available or broken links on pcb then make these jumpers cearfully and do not short with nearest key.these jumper can makes with smd reworkstation soldring iron.these jumper are so closest and you need to care for missing or shorting jumpers wire.please be cearfull.