Back in the Android 1.6 days, on many Qualcomm devices you could write all zeros to the IMEI, and then it'd let you write whatever IMEI you wanted. It was suppo

Back in the Android 1.6 days, on many Qualcomm devices you could write all zeros to the IMEI, and then it'd let you write whatever IMEI you wanted. It was supposed to be read only. Carriers were launching new plans for 3G smartphones that were more expensive than the existing unlimited data plans intended for WAP phones. Move the IMEI from your old WAP phone to a new Android phone and you had very cheap unlimited data for a few years.