Product Review

Please check the LCD flex cable in good condition (not bend/stuck/twist or torn, you can use the Magnifier to get better result), the same as the four corner of the LCD panel. then make sure the contact pins on the flex cable harness totally fitted with the mother board. Take a hard restart. The board has to be powered down before you start the installation. Remove battery ,and reinstalled the battery. Product Description:
Pakage Included:
1x LCD Glass Digitizer Display Screen Assembly Replacement with Frame White for Samsung Galaxy S4 GSM
1x Free Repair Tool Kits
Compatible Samsung Galaxy S4 GSM Version:AT&T i337 | T-Mobile M919
Here some Steps for the question you mentioned:
1.All the item will be tested 100% working fine before dispatched.
2.Pls kind check the LCD flex cable in good condition (not bend/stuck/twist or torn, you can use the Magnifier to get better result),the same as the four corner of the LCD panel.
3.Make sure the contact pins on the flex cable harness totally fitted with the mother board.
4.Change this Part is not an easy job. the item (especial the flex ribbon is easy fracture) is easy to damaged during the fitting.
4.Please test the item first before glue it into your phone or frame.
5.Just connect the flex ribbon to mainboard connector,after test the item working fine and then fitting into your phone.
6.Make sure the cable is connected in right way and is connected tightly.
Please be note:
Some parts have flex cables attached which are very fragile and can be damaged or torn very easily,so please be very careful when handling them.
For installation we suggest professional assistance.
Please kindly confirm your phone model before purchase,this item just compatible with S4 version i337 & M919 Only!