Latest Polytron Rocket R2 user agents:

User Agent	Browser	Platform
Mozilla/5.0 (Linux; Android 4.4.2; POLYTRON_R2406) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.138 Mobile Safari/537.36	Chrome Mobile 81	Android 4
Dalvik/1.6.0 (Linux; U; Android 4.4.2; POLYTRON_R2406 Build/KOT49H)	Android Browser	Android 4