Hi,
Try to connect an Samsung Galaxy Note III Android version: 4.4.2 with internet browser version: 1.5.28 failed to connect to web-passthrough authentication. Try to connect a Samsung Galaxy S6 Android version: 5.0.2 with internet browser version: 3.0.38.74-0_100601_424791 and was successful to connect to web-passthrough authentication. We are using AIR-WLC4404-100-K9.
Regards,
Arnold