解決方法：
1、進入設置-WIFI，點擊進入設置點擊已連接的WIFI網絡後面的“感嘆號”。
/iknow-pic.cdn.bcebos.com/e7cd7b899e510fb30a5c946ad233c895d0430c81"target="_blank"title=""class="ikqb_img_alink">/iknow-pic.cdn.bcebos.com/e7cd7b899e510fb30a5c946ad233c895d0430c81?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="/e7cd7b899e510fb30a5c946ad233c895d0430c81"/>
2、點選感嘆號點擊下面的DNS選項，刪除之前的DNS。
/iknow-pic.cdn.bcebos.com/bf096b63f6246b606b155189e0f81a4c510fa230"target="_blank"title=""class="ikqb_img_alink">/iknow-pic.cdn.bcebos.com/bf096b63f6246b606b155189e0f81a4c510fa230?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="/bf096b63f6246b606b155189e0f81a4c510fa230"/>
3、更改DNS點擊DNS壹欄開始修改，修改為8.8.8.8或114.114.114.114，雙擊HOME鍵。重新打開即可。