删除锁屏界面左上角和下拉框-没有SIM卡frameworks/base/packages/SystemUI/src/com/android/keyguard/CarrierText.java private CharSequence getCarrierTextForSimState(int phoneId, IccCardConstants.State simState, CharSequence text, CharSequence hnbName, CharSequence csgId) { CharSequence carrierTex