These are literally the definition of "stuffty cell phone"
It really is not a surprise you are having issues, it's amazing it's even made it this far.
EDIT: Typically if you bought a warranty through AT&T, then it's not LG's problem, it's AT&T's
honestly the reason it made it this far is because I don't try to push it to its limits because I honestly don't ask much from it.
in cities I don't have issues at all.
also stufflord and hillbill do you have the T-Mobile lte phone compatibility list? I don't think either of those 2 phones are compatible but idk because I'm on 2g internet and that's too slow to check