jio phone f220b 1 4 & calling key not working||jio f220 keypad 1 4 not working

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jio phone f220b 1 4 & calling key not working

jio f220 keypad 1 4 not working

jio f220 keypad not working

jio f220b 4 key not working

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Mobile repairing book link



Soldering iron





Smd (blower) machine




Mobile repair tools & screwdriver



Soldering paste & flux paste





Pcb cleaner ipa & oca glue cleaner



Repairing mat


Microscope


Multimeter


Pcb holder