Regular users can't change the number associated with their Android device by default. Companies use IMEI numbers for a handful of other purposes as well. Nonetheless, other situations arise where a given IMEI number is erroneously blacklisted. Most companies blacklist numbers associated with stolen phones to make them useless on a given network. Wireless companies can whitelist or blacklist IMEI numbers to regulate their access to a particular network. Latest Wadalhr Tool Change Imei Samsung and HTC Easy Unlocking Accounts By AMS TECH Currently, each smartphone and tablet features an unique IMEI number. International Mobile Equipment Identity numbers identify a given device, verifying the device's ability to access a wireless network.