Can't see Macbook WiFi access point on Android smartphone I'd like to connect my Android phone (Samsung Galaxy Nexus running Stock JellyBean) to my Macbook Pro (early-2012, running OSX Lion) via an access point created by my Macbook Pro.

Sadly I can't even see the access point on my Android phone.

Does anyone know a possible solution to this problem?

Additional information: A nearby Windows-PC and iPhone can connect to the AdHoc-network of the Macbook. The android phone can connect to all other wifi.
In Snow Leopard (sorry, I don't have a Lion to try this with):

In System Preferences > Sharing, 


Enable 'Internet Sharing'
Enable 'To computers using AirPort'
Click the 'Airport Options' button and set up hotspot's network name and encryption. The AirPort will have to be off for this button to be active.
'Ok' to back out to the Sharing pref pane.


On the Network Preference Pane, or on the menu bar,


Turn on the AirPort.


Your device should see your Mac as a WiFi access point.