1、在瀏覽器地址欄輸入“about:config”
2、新建字符串“general.useragent.override”
3、輸入偽裝的UserAgent值
偽裝成Opera Mobile輸入：
Opera/12.02 (Android 4.1; Linux; Opera Mobi/ADR-1111101157; U; en-US) Presto/2.9.201 Version/12.02
偽裝成iPhone的Safari瀏覽器輸入：
Mozilla/5.0 (iPhone; U; CPU like Mac OS X; en) AppleWebKit/420+ (KHTML, like Gecko) Version/3.0 Mobile/1A543 Safari/419.3
偽裝成iPhone下的Chrome瀏覽器輸入：
Mozilla/5.0 (iPhone; U; CPU iPhone OS 5_1_1 like Mac OS X; en) AppleWebKit/534.46.0 (KHTML, like Gecko) CriOS/19.0.1084.60 Mobile/9B206 Safari/7534.48.3
偽裝成Chrome手機端輸入：
Mozilla/5.0 (Linux; Android 4.0.4; Galaxy Nexus Build/IMM76B)
AppleWebKit/535.19 (KHTML, like Gecko) Chrome/18.0.1025.133 Mobile
Safari/535.19
