综合以下两篇博文，方便自己日后回顾
https://blog.csdn.net/weixin_43554135/article/details/94385336
https://blog.csdn.net/water_tone/article/details/80945671
步骤
1、打开Chrome，F12打开开发人员工具
2、点击菜单按钮-----More Tools -----Network condition打开Network condition窗口
3、下方会出现一个窗口，将Select automatically 去掉选中，在选择Custom（自定义）最下面框填写其中一种安卓或ISO其中一种UA

微信和QQ内置浏览器 User-agent

安卓QQ内置浏览器UA:

Mozilla/5.0 (Linux; Android 5.0; SM-N9100 Build/LRX21V) > AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 > Chrome/37.0.0.0 Mobile Safari/537.36 V1_AND_SQ_5.3.1_196_YYB_D > QQ/5.3.1.2335 NetType/WIFI

安卓微信内置浏览器UA:

Mozilla/5.0 (Linux; Android 5.0; SM-N9100 Build/LRX21V) > AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 > Chrome/37.0.0.0 Mobile Safari/537.36 > MicroMessenger/6.0.2.56_r958800.520 NetType/WIFI

IOSQQ内置浏览器UA:

Mozilla/5.0 (iPhone; CPU iPhone OS 7_1_2 like Mac OS X) > AppleWebKit/537.51.2 (KHTML, like Gecko) Mobile/11D257 > QQ/5.2.1.302 NetType/WIFI Mem/28

IOS微信内置浏览器UA:

Mozilla/5.0 (iPhone; CPU iPhone OS 7_1_2 like Mac OS X) > AppleWebKit/537.51.2 (KHTML, like Gecko) Mobile/11D257 > MicroMessenger/6.0.1 NetType/WIFI