greeting to everyone and maxis crew..if there anyone could help me?i was having problem to activating my gprs in sony ericsson model z600..i have use the method which using sms 'GPRS SonyEricsson Z600'...it say that it was a invalid phone model...and i try to activate by call..when it request me to dial 017prefix and follow by 7 digit of my number and #..it say i have enter invalid number...and i was wondering am i doing the right step?as i'm not sure wat it mean prefix...i have try 017*1234567# and even 017p123467#...pls help...