If your iPhone 6s plus meet some problems like cannot turn on, touch insensitive, flash, lines on screen etc, please follow below steps:
1. Please check your iPhone 6s plus LCD to make sure the flex cables are in good condition and there are no debris on the connector.
2.Disconnect and reconnect the flex cables from the motherboard side.
3.Then Reboot: Hold buttons (Home, Up volume, and Power button) untill the phone switch down and then switch up again.
4.Make sure IOS has been upgraded to the latest version.
5.Leave the phone alone for a while in a dry environment. Sometimes there is static after installing that will go away after some time.
Please leave your iPhone 6s plus alone overnight and see if this problem persists in the morning.

Repair your iPhone 6s plus broken screen by yourself:

The iPhone 6s plus screen replacement kits include the outer glass screen, Digitizer, LCD (all connected as one part) and proper tools to put it all together. Cococka iPhone 6s plus LCD screen are expertly designed to fit your phone, our outer glass screen are scratch and shatter resistant. So what are you waiting for? Save your hard-earned money and fix your phone yourself!

NOTE: The iPhone 6s Plus LCD is without home button, ear piece, front camera, proximity sensor holder, front camera holder, you need to transfer from old screen.

Package Include:
1* iphone 6S Plus 5.5 LCD replacement assembly kit
1* Set Repair Tool Kits