Product Review

Here some Steps for the question you mentioned: 1. 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. then make sure the contact pins on the flex cable harness totally fitted with the mother board. 2.Take a hard restart. 3.The board has to be powered down before you start the installation. 4.Remove battery ,and reinstalled the battery. Front LCD Display Screen Glass Digitizer Assembly Replacement Full Set with Frame For GSM Models - T-Mobile M919 AT&T I337 with Free Repair Tool Kits
Special Features:
.100% Test Working Before Shipping
.Highest Quality LCD Available on the Market.
.Fix your Broken or Damaged LCD with this part.
.Low Prices & Fast Shipping! Get Your Item Fast From USA FBA warehouse.
Package Content:
1 x Black LCD Glass Digitizer Display Screen Assembly Replacement with Frame
1 x Free Repair Tool Kits
Model Compatible:
For Samsung Galaxy S4 IV GSM Models - T-Mobile M919 AT&T I337