Patent ID: 9503883
Filing Date: 2016-11-22
CPC Classification: H04M,H04W

Claim Text:
1. A method for automatically switching a subscriber mode through identifying an IMSI, the method comprising: when a cell phone is turned on, reading a first IMSI of a first SIM card currently inserted into the cell phone; determining if the first IMSI is consistent with a second IMSI pre-stored in a memory of the cell phone, wherein the memory of the cell phone is separate from the first SIM card, and wherein the second IMSI was pre-stored in response to a shut down of the cell phone; if the first IMSI is determined to be consistent with the second IMSI, the cell phone enters a subscriber mode corresponding to the second IMSI; if the first IMSI is determined to not be consistent with the second IMSI, the first IMSI is compared with a third IMSI in an IMSI list pre-stored in the cell phone; and when the first IMSI is determined to be consistent with the third IMSI, the cell phone enters a subscriber mode corresponding to the third IMSI.