1、打开手机QQ，登录成功后，打开主界面，点击左上角自己的QQ头像或者向右滑动手机屏幕。
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https://iknow-pic.cdn.bcebos.com/342ac65c10385343e48a862a9c13b07eca808877"/>
2、进入到下图所示的界面中去，点击左上方的红色标注的地方。
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https://iknow-pic.cdn.bcebos.com/37d12f2eb9389b500eb9e1598a35e5dde7116e72"/>
3、进入QQ资料卡界面。再点击下图用红色标注所框住的个性签名区域。
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https://iknow-pic.cdn.bcebos.com/342ac65c10385343e4c3862a9c13b07eca8088a8"/>
4、在这个黑框中输入想要写入的个性签名，注意字数不要过多，数字超过40个字就无法保存。
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https://iknow-pic.cdn.bcebos.com/18d8bc3eb13533faecb99425a7d3fd1f41345ba9"/>
5、转到修改后的个性前面的界面，并在下面的框中显示您的个性前面。单击黑框包围的区域以修改签名。
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https://iknow-pic.cdn.bcebos.com/9d82d158ccbf6c81e93d2be3b33eb13533fa40b6"/>
6、文字输入完成以后，点击右上角的“发表”。如果以后想要修改个性签名，还可以通过该路径来修改。
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https://iknow-pic.cdn.bcebos.com/6609c93d70cf3bc7e071cae7de00baa1cd112a43"/>