[winjuxx]

Hey. So yesterday i replaced lightning port because i got charging problems. And now lte keeps dropping down to 3g or E. Im sure thats not carrier issue because before replacement it worked fine.
So could i mess something up or is that cheap part causing problem ?

[Tartarus]

Unless you also changed something on the motherboard, the replacing of the charging port should not have any effect on your signal.
Retrace your steps and make sure you have connected the antenna cable back on the motherboard.

And I can't do without saying this, but did you check for any lint in your charging port before replacing it?

[thedonp]

I would listen to Tartarus. Apple devices are so picky and testy. If something that clicks has had too much or too little pressure applied it can throw just about anything off balance.