I am using LG G2x in Pakistan at 2100Mhz 3g frequency and LG supports this frequency too but no 3G?

[AC Question]

Hi i've just bought this set and came to realize that it isn't supporting 3G.. I am having 2100Mhz frequency bands in Pakistan for 3G but still i am not been able to Run 3G on this phone.. I am getting no signals when i select wcdma only..
i receives signals in (1)GSM and (2)GSM/Wcdma... while selecting the second option and enabling data.. Phone only displays 2G running.... Please Help it looks like i've spoiled my money