Question: What happens to the EPS bearer context(s) during a combined EPS/IMSI detach procedure?
Option 1: The EPS bearer context(s) are updated with new parameters.
Option 2: The network and the UE deactivate the EPS bearer context(s) locally without peer-to-peer signalling between the UE and the MME.
Option 3: The EPS bearer context(s) remain active for a short period before being deactivated.
Option 4: The EPS bearer context(s) are transferred to another UE.
Explanation: During a combined EPS/IMSI detach procedure, both the network and the UE locally deactivate the EPS bearer context(s) without any direct signalling between them. This is part of the process that leads to the UE being marked as inactive in the network for both EPS and non-EPS services, and entering specific states (EMM-DEREGISTERED and MM-NULL) in both the UE and the network.