Latest Firefox Mobile 53 user agents:

User Agent Platform Device
Mozilla/5.0 (Android 9; Tablet; rv:53.0.1) Gecko/53.0.1 Firefox/53.0.1 Android 9 Unknown
Mozilla/5.0 (Android 9; Mobile; rv:53.0) Gecko/53.0 Firefox/53.0 Android 9 Unknown
Mozilla/5.0 (Android 8.1.0; Tablet; rv:53.0) Gecko/53.0 Firefox/53.0 Android 8 Unknown
Mozilla/5.0 (Android 8.1.0; Mobile; rv:53.0) Gecko/53.0 Firefox/53.0 Android 8 Unknown
Mozilla/5.0 (Android 8.0.0; Mobile; rv:53.0) Gecko/53.0 Firefox/53.0 Android 8 Unknown
Mozilla/5.0 (Android 7.1; Mobile; rv:53.0) Gecko/20100101 Firefox/53.0 Android 7 Unknown
Mozilla/5.0 (Android 7.1.2; Tablet; rv:53.0) Gecko/53.0 Firefox/53.0 Android 7 Unknown
Mozilla/5.0 (Android 7.1.2; Mobile; rv:53.0.2) Gecko/53.0.2 Firefox/53.0.2 Android 7 Unknown
Mozilla/5.0 (Android 7.1.2; Mobile; rv:53.0) Gecko/53.0 Firefox/53.0 Android 7 Unknown
Mozilla/5.0 (Android 7.1.2; Mobile; rv:53.0) Gecko/20100101 Firefox/53.0 Android 7 Unknown
Mozilla/5.0 (Android 7.1.1; Mobile; rv:53.0) Gecko/53.0 Firefox/53.0 Android 7 Unknown
Mozilla/5.0 (Android 7.1.1; Mobile; rv:53.0) Gecko/20100101 Firefox/53.0 Android 7 Unknown
Mozilla/5.0 (Android 7.0; Tablet; rv:53.0) Gecko/53.0 Firefox/53.0 Android 7 Unknown
Mozilla/5.0 (Android 7.0; Mobile; rv:53.0.2) Gecko/53.0.2 Firefox/53.0.2 Android 7 Unknown
Mozilla/5.0 (Android 7.0; Mobile; LG-M255; rv:53.0) Gecko/53.0 Firefox/53.0 Android 7 K20
Mozilla/5.0 (Android 6.0; Tablet; rv:53.0) Gecko/53.0 Firefox/53.0 Android 6 Unknown
Mozilla/5.0 (Android 6.0; Mobile; rv:53.0) Gecko/20100101 Firefox/53.0 Android 6 Unknown
Mozilla/5.0 (Android 6.0.1; Mobile; rv:53.0.2) Gecko/53.0.2 Firefox/53.0.2 Android 6 Unknown
Mozilla/5.0 (Android 6.0.1; Mobile; rv:53.0) Gecko/53.0 Firefox/53.0 Android 6 Unknown
Mozilla/5.0 (Android 5.1; Mobile; rv:53.0) Gecko/53.0 Firefox/53.0 Android 5 Unknown