Chosen Solution
Recently replaced the screen in my s9+ but for some reason the cell data has been shotty, one minute it works and the next it doesnt. But with an iphone on the same carrier the data is completely fine with wifi off. Why would it work off and on?
Not only that but if I have wifi and wifi calling on it works fine, but with wifi on and wifi calling off it doesnt!
It sounds like you didn’t connect one of the antennas when you put it back together.
