ACHIEVING DUAL SIM DUAL ACTIVE OPERATION IN AN LTE + LTE DEVICE BY DOWNGRADING USER EQUIPMENT CATEGORY TO 1 FOR ONE SIM

摘要

A method for performing a dedicated data subscription (DDS) switch on a multi subscriber identity module multi-active (MSMA) mobile communication device includes: initiating a DDS switch from a first subscription to a second subscription; determining whether a first communication network associated with the first subscription supports user equipment (UE) capability update via a tracking area update (TAU) procedure; in response to determining that the first communication network supports UE capability update via a TAU procedure, initiating a TAU procedure on the first subscription with the first communication network; and reporting a UE category 1 capability to the first communication network on the first subscription for the mobile communication device during the TAU procedure on the first subscription.