no cell signal - N5

I had a broke screen, I replaced it but now my nexus 5 has no cell signal. It knows there is a sim card in there but says no network is available. My sim works in other phones and other sims do the same in the nexus 5. I took the cover off the sim card slot and the pins look straight and no damage. I bought new antenna cables in hopes that was all it was but same result. I also did a fresh image flash but that didnt help. Wifi, BT and GPS all work.

Any other options?