手机QQ群发消息的具体方法步骤如下：
1、首先，找到该手机桌面的QQ软件，点击进入QQ软件，如下图所示：
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https://iknow-pic.cdn.bcebos.com/8d5494eef01f3a291a6eb1809725bc315d607cdd"/>
2、之后，在输入QQ账号和密码成功登录QQ账号之后，我们打开任一一个对话框，长按选择我们需要群发的QQ消息，之后在出现的选项框里选择“转发”选项，如下图所示：
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https://iknow-pic.cdn.bcebos.com/3b292df5e0fe9925868c0d1e3aa85edf8cb171ff"/>
3、之后，在出现的“发送给”程序页面里，找到“发起群聊”选项，点击“发起群聊”选项，如下图所示：
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https://iknow-pic.cdn.bcebos.com/6a63f6246b600c336e34b986144c510fd9f9a12b"/>
4、之后，在出现的“发起群聊”程序页面里，我们选择想群发消息的对象，在选择发送对象的同时，该人的QQ头像会出现在最上方的输入框内，以便检查是否有人数疏漏，选择完毕之后点击最下方的“立即创建”选项，如下图所示：
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https://iknow-pic.cdn.bcebos.com/caef76094b36acaf38dbf1b272d98d1001e99c40"/>
5、之后，会出现一个对话框，我们选择“发送”选项，如下图所示：
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https://iknow-pic.cdn.bcebos.com/00e93901213fb80e6520069938d12f2eb838948e"/>
6、之后，刚才选择的发送对象会在同一时间在这个讨论组里收到群发消息，如下图所示：
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https://iknow-pic.cdn.bcebos.com/a686c9177f3e6709953423b135c79f3df8dc5543"/>