Latest iOS 11 user agents:

User Agent Browser Device
Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.6564.1116 Mobile Safari/537.36 Chrome Mobile 59 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.5895.1725 Mobile Safari/537.36 Chrome Mobile 51 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.9028.1248 Mobile Safari/537.36 Chrome Mobile 43 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.6555.1404 Mobile Safari/537.36 Chrome Mobile 43 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2711.1656 Mobile Safari/537.36 Chrome Mobile 56 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/44.0.6575.1154 Mobile Safari/537.36 Chrome Mobile 44 iPhone
Mozilla/5.0 (iPhone; U; CPU iPhone OS 11_1_4 like Mac OS X; en-US) AppleWebKit/601.5.5 (KHTML, like Gecko) Version/13.1.1 Mobile/8F390 Safari/6533.18.5 Mobile Safari 13 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2807.1398 Mobile Safari/537.36 Chrome Mobile 57 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.5167.1396 Mobile Safari/537.36 Chrome Mobile 45 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.4131.1896 Mobile Safari/537.36 Chrome Mobile 42 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2595.1694 Mobile Safari/537.36 Chrome Mobile 45 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.5327.1167 Mobile Safari/537.36 Chrome Mobile 42 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.1683.1556 Mobile Safari/537.36 Chrome Mobile 54 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.4903.1336 Mobile Safari/537.36 Chrome Mobile 49 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.5420.1355 Mobile Safari/537.36 Chrome Mobile 50 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.1670.1543 Mobile Safari/537.36 Chrome Mobile 41 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.1216.1758 Mobile Safari/537.36 Chrome Mobile 39 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3975.1569 Mobile Safari/537.36 Chrome Mobile 59 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.3641.1664 Mobile Safari/537.36 Chrome Mobile 41 iPhone
Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.1454.1970 Mobile Safari/537.36 Chrome Mobile 54 iPhone