Latest Chrome Mobile 54 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/54.0.2889.1569 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/54.0.9901.1802 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/54.0.9235.1936 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/54.0.4638.1308 Mobile Safari/537.36 Android 8 Pixel 2
Mozilla/5.0 (Linux; Android 5.0; SM-G900P Build/LRX21T) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.3386.1422 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/54.0.3229.1549 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/54.0.5650.1859 Mobile Safari/537.36 Android 5 Galaxy S5
Mozilla/5.0 (Linux; Android 5.0; SM-G900P Build/LRX21T) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.8831.1244 Mobile Safari/537.36 Android 5 Galaxy S5
Mozilla/5.0 (Linux; Android 5.0; SM-G900P Build/LRX21T) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.3406.1000 Mobile Safari/537.36 Android 5 Galaxy S5
Mozilla/5.0 (Linux; Android 8.0; Pixel 2 Build/OPD3.170816.012) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.1433.1844 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/54.0.7185.1143 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/54.0.5201.1822 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/54.0.6474.1794 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/54.0.8029.1431 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/54.0.3487.1932 Mobile Safari/537.36 iOS 11 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 11_9_4; like Mac OS X) AppleWebKit/536.39 (KHTML, like Gecko) Chrome/54.0.3774.211 Mobile Safari/600.5 iOS 11 iPhone
Mozilla/5.0 (Linux; Android 8.0; Pixel 2 Build/OPD3.170816.012) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.3608.1432 Mobile Safari/537.36 Android 8 Pixel 2
Mozilla/5.0 (Linux; Android 5.0; SM-G900P Build/LRX21T) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.1634.1604 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/54.0.3708.1011 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/54.0.3658.1433 Mobile Safari/537.36 Android 5 Galaxy S5