Android
http://www.giga.de/extra/android-spezials/tipps/android-mobilen-wlan-hotspot-einrichten-so-geht-s/
Blackberry
Because the Blackberry support websites are frequently revised, the links become quickly outdated. For this reason we have to ask that you research this topic on your own: Blackberry Support
You can streamline your search by knowing the exact model and operating system version. Help is available at: de.blackberry.com/support/identify.html