no..its max rm100..
refer to the tnc from umobile website number 11..
11.If you are an existing U Mobile prepaid customer and you wish to switch to a postpaid plan, you may retain your phone number. Any remaining SMS, voice minutes or data allowance to which you are entitled under the previous prepaid plan will be forfeited and any content subscription services which are part of your previous prepaid plan will be automatically terminated. However, any credit remaining may be carried over to your new postpaid plan up to a maximum value of RM100 to offset bill payment. Any credit balance exceeding the sum of RM100 will be automatically forfeited.
source: umobile postpaid tnc

This post has been edited by MyHeart: Oct 9 2015, 11:44 PM