I was getting 4G at Ray Hopkins gym in Mauldin but it disappeared before I got past the strip of stores towards I-385 on E Butler Rd. Looking at the tower map at Sprint, I'm guessing that's where you switch to the tower near the 85/385 intersection. Does anyone know if that tower is in the process of being upgraded too? Also, are these upgrades supposed to increase reception quality? Thank you for any information!