Patent ID: 9635541
Date: 2017-04-25
CPC Classifications: G09G,H04B,H04N,H04W

Claim:
1. A method for using a plurality of subscriber identity module (SIM) cards at a wireless communication system, the method comprising: a. when a first event trigger occurs: b. when a second event trigger occurs: wherein when the first and second event triggers occur more frequent than a threshold, adding a time delay to both first and second event triggers; wherein the operational SIM card can be the first SIM card, the second SIM card or another SIM card from the plurality of SIM cards; wherein the criteria for the first event trigger and the second event trigger are different; wherein the selection of the second SIM is based on tariff price, usage frequency, expected network performance, and priority; and wherein the selection of the operational SIM card is based on tariff price, usage frequency, expected network performance, and priority.