In U.P.(East) RIM GSM 8081x xxxxx series has been introduced.Network is good, and i haven't noticed call or network problems in this new series, but i must agree when 902xxxxx series started, it has too much maintenance but seems it has improved a lot. I got new connection+simply RIM plan pre-activated from web-world at Rs.51/-and I get daily talk time too.Lastly 80 seriesw was not working for online refill from HDFC bank, but i talked to customer care at HDFC and they fixed it promptly.All N all, i am liking the prepaid low price as compared to my 3 postpaids from various operators.