I looked at the specs for the T211 and see that "WiFi Direct Available". I don't know what that means but I suspect that Sprint has the WiFi capability turned off and non-accesable. This would not surprise me. If forces you to use Sprint data (at a cost to you) instead of free WiFi hotspots. I also looked to see if there was a Cellular South firmware (OEM Rom) and did not see one.
I am at a loss as to why you cannot access WiFi. I would call a Sprint store and inquire as to why you cannot access WiFi. See if they have a legitimate answer. If they say it is turned off and CANNOT be turned on, then I would take it back and demand a refund then find another carrier.