Hi @jose12 ,
Try using the phone’s WiFi as close as possible to the router to see if it works OK.
If so then there is an antenna problem. The WiFi and the BT use the same antenna as they both work on the 2.4GHz band.
The phone will have to be opened and checked that the antenna has been reconnected properly.
Here’s an image taken from a teardown [https://www.youtube.com/watch?v=qZ5rZlwgY90|video] of the phone that shows the antenna cable and connection in the phone.
[image|2148764]
(click on image to enlarge for better viewing)
If you paid for the screen repair take it back to the repairer and tell them about the problem, as they didn’t test the phone properly after it was fixed.