Well, u have to make sure its added on ur plan... I work in customer care for cell phones and I often run into customers who get new phones having features "fall off" their plan when they changed the serial number in the system. Other than that, Sprint is not the company i work for, i know that with AT&T if you travel and lose service or ur phones service is not as it usually is u can take the battery out while the phone is on(if not a pda, if so do 'soft' reboot) and replace it and power it back on... this forces the device to find the nearest tower and recieve recent updates. For Verizon Wireless, u dial *228 opt 2
