Tip when using Speedtest.net to check / test your speeds - Use Albuquerque, NM - Internet Exchange NM
It is the best testing server when in Tucson, I don't find Tucson AZ speed test servers accurate as the NM servers.
Bars go up to 1-2 a few times but that's only 1x..
It started happening 2 days ago, and it's not my phone either.. I have a relative who has a iPhone 4S with virgin mobile and the signal is the same..
I also called and they said they'd send a technician to check the tower.