I've always had problems with Sprint signals since my Epic and S3. The data was never that good. They said this Spark was going to improve data speeds since it uses all 3 radios to pick up the best signal but I see no difference. Since its gone live here in town I see no difference from my S3. I get the same lte, same 3g and same no service in the same places as before. No improvement from what I can tell. Only thing now is that I can't talk and surf at the same time unless on wifi. What a gimmick this Spark is.