Don't go for U Mobile, you will regret.

I tried using U Mobile prepaid broadband in Cameron Highlands and got no signal at all.

They only pinjam Celcom 2G by local roaming it seems (my phone will show R). When I try to use the broadband (2G Edge) in this mode it is so slow even RSS reader cannot show new items when I scroll down.

Useless. I ported to Celcom today. I suggest if you are not in KL area do not use U Mobile.