vivo Y31s（t1版）网络频段

vivo Y31s（t1版）网络频段

2G GSM:850MHz/900MHz/1800MHz/1900MHz;
2G CDMA:BC0;
3G WCDMA:B1/B4/B5/B8;
3G CDMA2000:BC0;
4G TD-LTE:B34/B38/B39/B40/B41;
4G FDD-LTE:B1/B3/B4/B5/B8/B28A;
5G:n1/n28A/n41/n77/n78.