Chosen Solution

I replaced the screen and digitizer and the screen comes on but touch doesn’t work. I’ve checked all connections twice. What could it be?

jeyson, if you are sure that all your connections are properly seated, I would contact the vendor and replace the assembly once more. Sadly enough, it is not uncommon to receive a bad digitizer. Of course, you always want to double check your work, check to make sure that there are no bend or broken pins on the connector.