Latest Masstel N660S user agents:

User Agent	Browser	Platform
Mozilla/5.0 (Linux; Android 6.0; Masstel N660s Build/MRA58K) AppleWebKit/537.36 (KHTML, like Gecko) coc_coc_browser/70.4.238 Mobile Chrome/64.4.3282.238 Mobile Safari/537.36	Coc Coc 70	Android 6