Latest Chrome Mobile 53 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; Android 8.0; Pixel 2 Build/OPD3.170816.012) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.4855.1865 Mobile Safari/537.36 Android 8 Pixel 2
Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.9938.1570 Mobile Safari/537.36 iOS 11 iPhone
Mozilla/5.0 (Linux; Android 8.0; Pixel 2 Build/OPD3.170816.012) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.8788.1942 Mobile Safari/537.36 Android 8 Pixel 2
Mozilla/5.0 (Linux; Android 8.0; Pixel 2 Build/OPD3.170816.012) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.4589.1133 Mobile Safari/537.36 Android 8 Pixel 2
Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.7827.1850 Mobile Safari/537.36 iOS 11 iPhone
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.1905.1266 Mobile Safari/537.36 Android 6 Nexus 5
Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.6655.1367 Mobile Safari/537.36 iOS 11 iPhone
Mozilla/5.0 (Linux; Android 6.0.1; SM-G900F Build/MMB29M) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.124 Mobile Safari/537.36 Android 6 Galaxy S5
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.6703.1468 Mobile Safari/537.36 Android 6 Nexus 5
Mozilla/5.0 (Linux; Android 8.0; Pixel 2 Build/OPD3.170816.012) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2545.1232 Mobile Safari/537.36 Android 8 Pixel 2
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.8360.1063 Mobile Safari/537.36 Android 6 Nexus 5
Mozilla/5.0 (Linux; Android 5.0; SM-G900P Build/LRX21T) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.4535.1630 Mobile Safari/537.36 Android 5 Galaxy S5
Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.1021.1656 Mobile Safari/537.36 iOS 11 iPhone
Mozilla/5.0 (Linux; Android 5.0; SM-G900P Build/LRX21T) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.4141.1274 Mobile Safari/537.36 Android 5 Galaxy S5
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.1056.1223 Mobile Safari/537.36 Android 6 Nexus 5
Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.4347.1526 Mobile Safari/537.36 iOS 11 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.6632.1024 Mobile Safari/537.36 iOS 11 iPhone
Mozilla/5.0 (Linux; Android 8.0; Pixel 2 Build/OPD3.170816.012) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.1408.1892 Mobile Safari/537.36 Android 8 Pixel 2
Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.4924.1950 Mobile Safari/537.36 Android 6 Nexus 5
Mozilla/5.0 (Linux; Android 5.0; SM-G900P Build/LRX21T) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.3781.1644 Mobile Safari/537.36 Android 5 Galaxy S5