I have the LTE version of S4, i9505. Recently just flashed to latest Omega rom. Everything works fine except sometimes the phone signal is lost.

Tried flashing other modems using mobile Odin but now I can't even use mobile data! Tried flashing back the original modem and even did a rom full wipe but still can't get mobile data to work.

I already checked APN settings, tried simcard on another phone. What else could be the issue here?

those with i9505 LTE, what's the best modem so far? I'm encountering signal drops once in a while which is getting on my nerves..

is it possible that my non-LTE simcard is the contributing factor to this issue? it's a normal sim card that was cut to micro sim by the way..