Troubleshooting of mobile phones....
ANTENNA CONNECTOR PROBLEM
Signal weak and one point tower
When u don’t get the tower in all sim that time you follow this.
Remove the antenna connector and clean the connector area using eraser.1100,1620,2600 inthis model antenna connector fixed in top of the board.
voice not clear and ringer volume is very low.
Remove the cover and check the speaker.if its failure remove thwe speaker and fix the new speaker.
(display connector,display card,display unit problem)
1. remove the cover and check the display
2. if failure remove the lcd and fix new lcd.
3. If u see any vertical lines in display change the strip or horizontal line change the display.