mobile

So

I just fixed my broken Screen on my Nexus 4 (i earn money repairing phones), and i got a problem. The Proximity Sensor and Light sensors werent working so i just took them off and tried to boot up again. But my phone isnt booting anymore. It just keeps bootin inside a bootloop. Device was never rooted or unlocked. So i tried resetting but didnt work. Then unlocked the device and flashed a custom recovery and several different roms but didnt work either.

Now i wanted you guys help, if you could tell me if nexus devices dont boot up with missing hardware. Because my experience tells me that almost every smartphone even boot up with mossing hardware like the sensors and things.

Dont know if anyone ever had a problem like this, but i hope you guys can help me.

I dont want to huy a new proxysensor before being sure its about the missing hardware, cause the sensors are like 20 $ and that phone isnt much worth anymore.