Upgraded from a Samsung Galaxy S Blaze 4G to a Galaxy S4. My signal strength fell off drastically at my home in Tucson, Az. The Blaze 4G was fine. I never suspected that a newer phone would have worst signal strength from t-mob.
Updated software to Kitkat 4.4.4 but no improvement on signal strength. Others seem to be having same issue with no signal or very weak signal with Samsung S4 and T-mobile. Any ideas on how to proceed will be appreciated. Thanks.