We all know that sprint release first batch of iphone 4s in unlocked status, so I bought 2 of them from ebay and I checked imei, both of them were activated before Nov. 11, then i found one of them is unlocked and another one is still locked, it always says my sim card is not compatible for the phone, anyone knows is it possible to get it unlocked, i thought all the phone release before Nov 11 should be already unlocked, but seems not true.