Just switched my simcard from my 3g router to iphone.

Found the data/internet connectivity of UM is intermittent.

Called the CS and what they advise me:
1) eject and reinsert the sim
2) manual search for the cellular carrier and use maxis, in few mins then switch back to UM

Besides above, i had tried to switch on/off my phone and even reset the phone also not solving the issue.

Anyone having same problem with me? or it just me.

note: i think having same problem while the simcard is in the 3g router as i use the router in my car and my wife keep saying sometime no internet connection while using wifi.