[header] How to flash a phone [title] Make sure you are trying to flash a cdma phone. [step] Cdma stands for code division multiple access. If you are uncertain whether your phone is cdma or not, remove the battery and look for a removable subscriber identity module (sim) card under the battery.
If there isn't a sim card, you indeed have a cdma phone that can be flashed. [substeps] Gsm (global system for mobile communications) phones can't be flashed (like at&t and t-mobile).