Latest AT&T Cingular Flip IV user agents:

User Agent	Browser	Platform
Mozilla/5.0 (Mobile; ATT_U102AA; rv:48.0) Gecko/48.0 Firefox/48.0 KAIOS/2.5.3.1	Firefox Mobile 48	KaiOS 2
Mozilla/5.0 (Mobile; ATT_U102AA; rv:48.0) Gecko/48.0 Firefox/48.0 KAIOS/2.5.3	Firefox Mobile 48	KaiOS 2