US 9,813,989 B2
Power reduction techniques for dual-SIM devices
Li Su, San Jose, CA (US); and Jianxiong Shi, Dublin, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Jan. 29, 2016, as Appl. No. 15/9,992.
Claims priority of provisional application 62/112,676, filed on Feb. 6, 2015.
Prior Publication US 2016/0234782 A1, Aug. 11, 2016
Int. Cl. H04W 4/00 (2009.01); H04W 52/02 (2009.01); H04W 36/36 (2009.01); H04W 36/38 (2009.01); H04W 8/18 (2009.01)
CPC H04W 52/0229 (2013.01) [H04W 8/18 (2013.01); H04W 36/365 (2013.01); H04W 36/38 (2013.01); Y02B 60/50 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
one or more processing elements for operating in conjunction with at least two subscriber identity modules (SIMs) comprising a home SIM and a configurable SIM, wherein the one or more processing elements are configured to:
register, using a first protocol stack, the configurable SIM with a local network using an identifier of the configurable SIM;
determine if the local network is an available network for the home SIM;
register, using the first protocol stack, the home SIM with the local network in response to determining that the local network is an available network for the home SIM, wherein registering the home SIM uses the identifier of the home SIM; and
monitor, using the first protocol stack, for pages for each of the home SIM using the identifier of the home SIM and the configurable SIM using the identifier of the configurable SIM.