This article explains how to provide WiFi to mobile clients by disabling airMAX on devices. This is an outdated feature that became obsolete once our UniFi Wireless products became available.
1. In the Wireless tab, make sure your device is in Wireless Mode: Access Point
2. Set Channel Width to 20Mhz
3. Click Change
4. Navigate to the Ubiquiti Tab
5. Disable airMAX
6. Click Change then Apply
7. Now you should be able to connect your mobile clients to the airMAX device.