vivox21看视频怎么设置全屏

1.首先唤醒手机屏幕，进入到手机主屏界面中。

2.然后找到手机上的视频软件，点击打开进入，如图所示。

3.找到需要播放的视频，点击打开，如图所示。

4.点击之后，右上角有一个三个点的，点击这个图标。

5.在弹出的选框中选择拉伸至全屏，或者是裁切以全屏。这样就可以设置全屏了。

1.首先唤醒手机屏幕，进入到手机主屏界面中。
/iknow-pic.cdn.bcebos.com/3812b31bb051f81927dd6bfbd7b44aed2f73e783"target="_blank"title="点击查看大图"class="ikqb_img_alink">/iknow-pic.cdn.bcebos.com/3812b31bb051f81927dd6bfbd7b44aed2f73e783?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/3812b31bb051f81927dd6bfbd7b44aed2f73e783"/>
2.然后找到手机上的视频软件，点击打开进入，如图所示。
/iknow-pic.cdn.bcebos.com/faedab64034f78f07d79f04274310a55b3191c14"target="_blank"title="点击查看大图"class="ikqb_img_alink">/iknow-pic.cdn.bcebos.com/faedab64034f78f07d79f04274310a55b3191c14?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/faedab64034f78f07d79f04274310a55b3191c14"/>
3.找到需要播放的视频，点击打开，如图所示。
/iknow-pic.cdn.bcebos.com/b17eca8065380cd76cbbc85cac44ad34588281de"target="_blank"title="点击查看大图"class="ikqb_img_alink">/iknow-pic.cdn.bcebos.com/b17eca8065380cd76cbbc85cac44ad34588281de?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/b17eca8065380cd76cbbc85cac44ad34588281de"/>
4.点击之后，右上角有一个三个点的，点击这个图标。
/iknow-pic.cdn.bcebos.com/d058ccbf6c81800a2671e3bfbc3533fa838b47ee"target="_blank"title="点击查看大图"class="ikqb_img_alink">/iknow-pic.cdn.bcebos.com/d058ccbf6c81800a2671e3bfbc3533fa838b47ee?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/d058ccbf6c81800a2671e3bfbc3533fa838b47ee"/>
5.在弹出的选框中选择拉伸至全屏，或者是裁切以全屏。这样就可以设置全屏了。
/iknow-pic.cdn.bcebos.com/8326cffc1e178a822c672a11fb03738da977e82c"target="_blank"title="点击查看大图"class="ikqb_img_alink">/iknow-pic.cdn.bcebos.com/8326cffc1e178a822c672a11fb03738da977e82c?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/8326cffc1e178a822c672a11fb03738da977e82c"/>

由于vivo X21手机采用的全面屏设计，显示屏比例是19：9；若第三方软件未适配该显示屏比例的话，则是无法全屏显示的。
可以尝试进入手机设置--显示与亮度--第三方应用显示比例中将对应的软件开启全屏显示试试。