I use an MT usually. But i am going on a short trip for 2 days where i will need better GPS performance, so i want to swap to my Optimus V for a few days. i called virgin mobile they said there is a $15 charge to swap phones, then anothe rep said there is no charge. on the VM FAQ it says there is no charge to do it online. im confused what is the true policy? anyone swap phones frequently?