3 ms·

IMEI is unfortunately a mutable value on many devices. An extreme example which is used for SMS/Voice spam: https://www.aliexpress.com/store/product/GPRS-sms-6

• jonathanstrange 9y ago
  I might be wrong but I always thought this requires some pretty high level of operational discipline, because its detectable and highly suspicious when you switch the IMEI while the phone is switched on and the same card is in the phone. You have to turn off the phone, remove the sim, turn on the phone and switch the IMEI, turn it off again and put another SIM in, and then turn it on again. Otherwise the Telecom provider will register the anomaly and might even inform the authorities or kick off the phone from the network. Again, please correct me if I'm wrong.
  • CydeWeys 9y ago
    A proper side phone could be programmed to handle this process correctly. In an option accessible from a menu it could drop the network, prompt to switch out a SIM (or use one in a different slot), wait a suitable amount of time, and then reconnect to the network. I see no reason to reboot the phone. SIMs can be hot-swapped.
  • TomMarius 9y ago
    You can configure (rooted) Android to not connect to mobile network until you tell it to do so