微信每天最多可以加20个好友。
微信添加好友的具体操作步骤如下：
1、首先在手机上点击打开“微信”应用程序，接着在此页面内有上角的“+”按钮，接着在弹出来的选项框内点击“添加好友”选项。
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2、然后在此页面内点击上方的搜索栏。
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3、然后在其中输入要进行添加的好友的微信号或QQ号和手机号，然后点击下方的选项。
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4、然后在此页面内点击“添加到通讯录”功能选项。
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5、然后接着在此页面内进行输入验证信息，然后点击右上角的“发送”，然后就完成了。
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