Yeah. That was the issue. Replaced the antenna, and everything's back in working order. Cheers.

Get Appcake on your phone through its website and download unc0ver with it. Cheers.

Had this happen to me a couple of days ago a while after dropping the phone. Reinserting the camera ribbon into its port got it working again. My camera pins may not be in pristine condition as it I think I retrieved it from a water damaged phone. Was your camera ever replaced? Perhaps its pins are also worn. Maybe you could try slamming the back of the phone a bit to see if it realigns. I doubt it’ll make a difference, especially if your part includes the bracket that is screwed onto the board, but other than that, reinserting it could be all you can do.

I tried removing the volume buttons/mute/upper microphone part considering it was the last modification since the phone was working and it was to no avail. Tried messing around with the antennas, removing one and the other, etc, but the only thing I learned was that neither the top or bottom antenna is used for Mobile Data. So I picked up yet another phone I had lying around. Switched boards entirely. I gave the lower antenna the benefit of the doubt in that the first replacement might be damaged as well considering the phone was water damaged - but nah - it's the same crap. I put the board in an entirely new case and the problem isn't solved. Considering there's nothing possibly replaceable to fix the issue, I tried to inspect the area around where the lower antenna connects. Compared the two boards that I have, shining a light on it and using a magnifier and all, thinking maybe I could've accidentally scraped it a bit somehow, but guess what - there isn't a nanometer of a difference between the...

Problem fixed by updating Android version, however still a tad slower than I believe to be normal. I probably wouldn't even notice had I not another phone for reference, but still a bit of a nuisance.

The right one isn't playing anymore, though it charges, connects, blinks blue and responds to touch input! Can't tell what I've done wrong but a slight scratch(oh, barely) on the large ribbon cable at the top(inside part).

So sad :(

I’ve tested all networks on a phone without this antenna and it seems to work just fine.

What does the absence of this part actually entail?