It might be your service provider problems .... Been getting crappy Celcom service these few days . Basically , I need like 4-5 attempts to call a person and even then , like u said , line keep potong potong aka robot-conversation

i dont think so. when i switch my digi sim card to my iphone 3gs and it is working like a charm. but when i am using my s2, it dc and reconnect almost every 5 mins.

i have done lots of reseaches. it is not hardware problems. alot users are experiencing such problem in oversea. and it is proven that the disconnection is due to modem firmware issue! may i know what is the best modem version for digi users. thanks in advanced