I planning to get u28 prepaid or postpaid for my iPad 2. I was told prepaid means I have to take out the sim card every month during reload?

If I have a 012 number, can it be port over to uMobile? Or must get 018 number? Where in klang or shah alam have uMobile shop?

I worry uMobile no signal at where I live, can I cancel after using a month? Any penalty?

Prepaid u28 is unlimited but due to Fair Usage Policy, after exceed 1gb get throttled to 64kbps? Postpaid the same?