Mozilla/5.0 (Linux; U; Android 5.1.1; en-US; vivo Y21L Build/LMY47V) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 UCBrowser/12.11.9.1201 (SpeedMode) U4/1.0 UCWEB/2.0 Mobile Safari/534.30