Well they both are kinda correct...Sprint bought Centel (Illinois) and got their exisiting wireless network in 1993. I believe they then sold that wireless division a year or two later to focus on building their own PCS network, which was the GSM network I referenced above. So Sprint had wireless in 1993, but anyone that had them as Sprint back then would have been transferred to whomever they sold it to a couple years later, since Sprint had no network of their own to transition their existing customers to.

No matter which one is correct, neither have anything to do with the thread,