修改路径:px30_android-8.1\frameworks\base\telephony\java\com\android\internal\telephony
修改文件:RILConstants.java
修改内容:
NETWORK_MODE_LTE_TDSCDMA_GSM_WCDMA = 20; /* TD-SCDMA, GSM/WCDMA and LTE */
int NETWORK_MODE_TDSCDMA_CDMA_EVDO_GSM_WCDMA = 21; /*TD-SCDMA,EvDo,CDMA,GSM/WCDMA*/
int NETWORK_MODE_LTE_TDSCDMA_CDMA_EVDO_GSM_WCDMA = 22; /* TD-SCDMA/LTE/GSM/WCDMA, CDMA, and EvDo */
int PREFERRED_NETWORK_MODE = SystemProperties.getInt("ro.telephony.default_network",
NETWORK_MODE_LTE_GSM_WCDMA); /*默认4G网络*/
/*NETWORK_MODE_WCDMA_PREF);*//*默认3G网络*/
int BAND_MODE_UNSPECIFIED = 0; //"unspecified" (selected by baseband automatically)
int BAND_MODE_EURO = 1; //"EURO band" (GSM-900 / DCS-1800 / WCDMA-IMT-2000)
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