My phone got stolen the other night and I now need to buy another but I don't have an upgrade. I found at overstock.com a cheap optimus but it says unlocked. I am with Sprint so is this a bad thing? Will it being unlocked cause any problems with my service? I know you have to get a phone unlocked to use a different company but as I am with sprint I don't need an unlocked one and if I have an unlocked one will it mess my web connection up?