How to Make a Sprint Phone Work on Boost Mobile CDMA Service
Make a Sprint phone work with Boost Mobile CDMA service -- in other words, phones without SIM cards -- in order to use the device with prepaid service based on your actual usage each month, rather than having to sign a contract and paying a set amount each month. Boost Mobile allows you to activate a CDMA phone online using information printed on the phone's body.
Call Sprint customer service at 888-211-4727 to close your Sprint account if you haven't already done so. Activating a Sprint handset on Boost Mobile's network prevents the device from working with Sprint, but doesn't absolve any remaining financial liability you have with the carrier.
Click the "Activate" link at the top of the Boost Mobile homepage. Remove the Sprint phone's battery cover and battery.
Locate the 18-digit number under the battery -- this is the MEID serial number -- and input it into the empty field. Click "Start Activation Process."
Select the region where you want to use the phone and, if you want, a custom phone. Input your name, address and email address. Boost doesn't require any financial identifying information, but does require personal contact information for billing purposes.