I registered to this forum just to reply to these thread haha!
But this is to show my appreciation on how i fixed my grey battery problem.
I have tried the following suggestions in the thread and here are the results:
>Change charger or adapter: NOT WORKED
>Use blow dryer to clean ports: NOT WORKED
>Cleaned the usb port via vacuum: NOT WORKED
>Change phone configuration: NOT WORKED
>Replaced the USB port: WORKED!!
I just bought mine in less than three months (From Kimstore, online shop in Phils) when the problem showed up.
I really need to connect Galaxy S4 to my computer so i want this problem fixed asap.
I have no time to have it replaced or checked with warranty plus its a hassle to go to the Samsung service centers here in the Philippines.
So I decided to change it myself with a help of a youtube video on how to open S4
>>
Samsung Galaxy S4 Screen and Charging Port fix. Complete tear down. - YouTube
Anyway after changing the port it was immediately fixed! the charging sign can be seen when i charged it and I can now connect it to my laptop haha.
Difficulty:
Moderate (needs no special skills)
Price:
Prying set: Php 300 ($6.5; plastic pryer with screw holders)
Replacement USB port: Php 400 ($8.9; M&K Brand)
Duration:
1 hour (mine is around 45 minutes; first time opening an S4)
Parts Location; Philippines:
Carriedo cor Quiapo Church. There is a building there where laptop and phone parts are sold.
Try asking where you can buy "S4 USB port" or you can show this pic. When you finally find a stall,
you can also purchase there the prying set
Hope this helps
CMSO