@all frnds m using n70 1 from last 3 yrs.Put ur phone in dual mode,and when u insert any 3g sim in it,it will automatically detect that,and working fine.I made 3g call many times from my phone,i dont think there is any prob,
@ginig, bro just put ur phone in dual mode,and then insert bsnl 3g sim in that,and then see wat happens,did ur area support 3g