I had an iPhone 6s until it died it had weak internet always in my home location but the phone worked fine ,I got a replacement used iPhone 7,now it can’t support a phone signal hardly and still weak to no internet,NO HELP from TM they go through the stages and reconnect your phone to the tower etc etc etc.The tower is only a mile or two away why is this a problem the phone works away from my home mostly 

we had an emergency and had to call an ambulance I had no phone reception and ran to a neighbor and use his phone 

I really don’t have a land line wtf is the problem in my area 33458 anybody??