I got Aircel 3g signal(umts) while performing manual network searching from my MMX 352G Data card(3G)but unable to registered.every time Registration failed error appear, I'm from kolkata & aircel officially launched 3G in kolkata, Also i am using 2g Sim, andt try to transform it to 3g(sending SMS ti 121,START 3G), but no confirmation SMS received whether my SIM converted in 3G or not. Please suggest.