You can get mobile phones at low cost from websites like Ebay or Amazon.com network locked mobile phones can be lesser in cost when compared with unlocked phones. You can get a network locked phone for low cost and use it with same network or unlock it and use it with any network you prefer. You can unlock your phone safer and easier using unique unlock code. You can get the unique unlock code for a cell phone from any trusted vendor online like Unlock-Zone.com at low cost. You can also visit Unlocking4Free.com to get free unlocking codes for certain basic model phones. Good luck.