IMEI on GSM in the UK: Do phones broadcast their IMEI to the network?
May 28, 2014 5:54 AM Subscribe
When GSM phones in the UK are on a 3G network, is there any broadcast or query of the handset's IMEI number to or with the network operator?
posted by davemee to Technology (5 answers total) 1 user marked this as a favorite
This question comes out of a long, long dispute with T-Mobile UK.
I'm curious as to the relationship between IMEIs, SIM cards, and the GSM network. Presumably, the network can issue a packet that prevents blocked handsets 'registering'* with the network, or informing them that they are not welcome.
Is there any communication of IMEI numbers from the device to the network operator, though? Is there a way a network provider can map between a SIM card, a handset, and an account? Are IMEIs provided when devices turn on and associate with a network?
I am likely to be using ambiguous language, due to not being a GSM engineer; clarification happily provided on request!
* I have no idea how this really works