P4 P4 is a tablet manufactured by PiPO Technology. Latest user agents:Mozilla/5.0 (Linux; U; Android 4.4.2; en-US; P4 Build/KOT49H) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 UCBrowser/10.1.0.527 U3/0.8.0 Mobile Safari/534.30