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Reply To: IMSI detach in GSM


I shall have another go…

Having worked in handset manufacturing in the past causes for IMSI-detach:

1) power off handset
2) SIM removed from handset
3) SIM loose (causes make/break) when inserted into handset
4) Where handset in GPRS modes and switches to IMSI-detach to select non-GPRS services

(part 1)