这是手机的辅助触控功能，设置方法如下：
一、首先在手机桌面点击“设置”，如图。
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二、然后在手机的设置界面选择“通用”选项，如图。
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三、接着在通用界面打开“辅助功能”进入，如图。
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四、进入以后点击“辅助触控”选项，如图。
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https://iknow-pic.cdn.bcebos.com/d50735fae6cd7b89062c3150012442a7d8330ea4"/>
五、最后打开“辅助触控”一栏的开关即可，如图所示。
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