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:
Feb. 18, 2025
Filed:
Feb. 18, 2022
Huawei Technologies Co., Ltd., Guangdong, CN;
Longhua Guo, Shanghai, CN;
He Li, Shanghai, CN;
Huawei Technologies Co., Ltd., Shenzhen, CN;
Abstract
Embodiments of this application provide example communication methods and apparatuses. One example communication method is applied to a communications device, where a subscriber identification module (SIM) card is installed in the communications device, and where the example communication method includes determining, by the communications device, that the SIM card is removed. The communications device can then send alarm information to a network device, where the alarm information indicates that the SIM card in the communications device is removed, and where security protection is performed on the alarm information based on security context stored in the communications device. The communications device can then delete the security context.