The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 21, 2021
Filed:
Jun. 01, 2020
Apple Inc., Cupertino, CA (US);
Abhishek Walia, Cupertino, CA (US);
Najeeb M. Abdulrahiman, Fremont, CA (US);
Oleg M. Moskalenko, Ben Lomond, CA (US);
Sergey Sitnikov, San Jose, CA (US);
Vikram Bhaskara Yerrabommanahalli, Saratoga, CA (US);
Ajoy K. Singh, Milpitas, CA (US);
Arun G. Mathias, Los Altos, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
Apparatus and methods to support access to services of multiple wireless networks by a single-radio, multiple subscriber identity module (SIM)/electronic SIM (eSIM) wireless device are disclosed. To send or receive voice communications for multiple SIMs/eSIMs, when an active voice connection for a first SIM/eSIM uses wireless circuitry to connect to a first cellular wireless network via a first radio access network, the single-radio, multi-SIM/eSIM wireless device uses alternative data transports, such as via a wireless local area network (WLAN) or by tunneling through the first radio access network of the first cellular wireless network to connect to services of additional cellular wireless networks associated with the multiple SIMs/eSIMs.