Force touch doesn work correct after screen replace

It may just be due to a bad screen or a poor quality screen. Try getting it fixed by apple its only about $129.00 USD

"Not all the replacement screens in the aftermarket have good performance on 3d touch. Check this test:

This embed seems invalid. Please check the URL."

Had the same problem, we changed our first 6s screen (a phone we bought cheap with a broken screen) we bought some 3rd party screens with the lcd attached and the 3d touch would work on the left side of the screen but not the right. We bought this phone just to try.. conclusion.. don't buy 3rd party screens.. take it to apple.. Not until the distributors can master the 3D touch at least.

Hi Guys update I've replaced a few 6S screens and it didn't work so being the perfectionist I think I am lol I went all out and tested it many time still noting finally I made sure the screen was really snug and put sticky tape on top and bottom of screen and Viola 3D Touch started working .. This worked for me hope this of some help to any others with the same issue

"I also had this problem , was advised by the seller to make sure that the backlight was fully covered by metal LCD plate (Although what this would have to do with Force Touch I have no idea)

Ended up getting the entire phone replaced ......... but will be following this post with interest!

Update (02/29/2016)

Ok for everyone following this thread here's an update. I received an email today from one of my suppliers saying the following:-

""iPhone 6S 3D active touch function issue is solved successfully by our factory.Our iPhone 6S screens are with sensitive and perfect 3D active touch function.""

iPhone 6s 4.7 inch screens with nice 3D active touch function:

Unit price: $118.1 for AAA made by original lcd, original back light, original flex cables.

iPhone 6s plus 5.5 inch screens with nice 3D active touch function: Unit price: $175.5 for AAA made by original lcd, original back light, original flex cables.

So it looks as though 3rd partys have figured out how to keep 3D Touch / Force Touch working properly now! They said initially with the 6S that the 3D touch was causing big problems but their engineers fixed it.

I guessed (possibly incorrectly) that posting the supplier contact information here wouldn't be allowed for some reason? If that's wrong please let me know!"

"There is so much that has got to be taken into consideration now with the 6s LCD.

On the iPhone 6/5 etc you can have any grade of OCA (different widths etc) and it wouldn't really matter. Glass thickness could be different but it wouldn't matter. Now 3D touch is here everything needs to be perfect. The glass/oca/polarizer all need to be 1:1 original to maintain 3D Touch.

My opinion is don't ever use a 3rd party LCD on an iPhone 6s."