Reducing call failure rate in multi-subscriber identity module capable devices

A method for reducing call failure rates on a multi-subscriber identity module (SIM) mobile communication device includes: selecting a first SIM camped on a visiting public land mobile network (VPLMN); attempting call initiation on the first SIM; determining whether call setup on the first SIM on the VPLMN is successful; in response to determining that the call setup on the first SIM is unsuccessful, determining if a second SIM is camped on a home public land mobile network (HPLMN); and in response to determining that the second SIM is camped on the HPLMN, selecting the second SIM camped on the HPLMN; and attempting call initiation using the second SIM. 种用于降低多用户标识模块(SIM)移动通信设备上的呼叫失败率的方法包括：选择驻留在访问公共陆地移动网络(VPLMN)上的第SIM；在第SIM上尝试呼叫发起；确定VPLMN上的第SIM上的呼叫建立是否成功；响应于确定第SIM上的呼叫建立不成功，确定第二SIM是否驻留在归属公共陆地移动网络(HPLMN)上；以及响应于确定第二SIM驻留在HPLMN上，选择驻留在HPLMN上的第二SIM；以及使用第二SIM尝试呼叫发起。