Reduction of cell signal.
I used to have 4 bars of signal while on my couch at home. This has dropped to only 1 bar now. I discussed this at my local AT&T store who suggested I am being throttled due to too many people using the system. We upgraded my account to eliminate this. I still only get 1 bar (sometimes none). I have iphone7+. It seems like when 5g was implemented, 4g was reduced. I’m very frustrated as I have been an AT&T customer over 30 years. Other companies are making offers if you move your service you get a free phone. Yet there are no comparable offers for loyal customers to stay. What can I do to improve my current situation?