TATA DoCoMo has done big mistake by tie-up with DoCoMo. The GSM service is so pathetic specially in Bangalore. The mobile shows tower and also HSPA but even 30kb data download fails. This happens very frequently. I have been depending on this sim for 3G data but it is unreliable.
I am planning to switch to other network, preferably Airtel. Someone please suggest if Airtel is better option.