No. You can't. If you take it they have to charge you, and if your porting fails, they cannot reverse the charges.

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Added on November 25, 2010, 10:26 amIn my experience...

Coverage - I found DiGi to be lacking in 3G coverage, however they still have EDGE coverage everywhere.

Data Services - Surfing on DiGi has been much smoother than Maxis. I really hate Maxis' data service. I can even surf well even when the 3G reception is only 1 bar!

This post has been edited by ionStorm: Nov 25 2010, 10:26 AM

If you register for an iPhone and do your MNP specifically for that purpose, then they will reserve a unit for you. They are obligated to provide you with a unit when your MNP is complete. If they know they cannot deliver when your MNP is done, they will tell you not to MNP.