What will happen is you will drop to whatever that area you are in is pushing out from MetroPCS. Most markets are only doing a lousy 1x, which is horrible. The price you pay for being with them. Now however there has been some markets out there that have 3G with Metro. Not many areas have them. So in a nutshell if you leave a 4G area you will more than likely drop down to a crawl of 1x.