In Google Plus, I am able switch between my personal page and Brand Pages. (As described here.)
How do I do the same using the Android app version of G+?
This question came from our site for power users of web applications.
The process has changed as of version 4.1. You no longer have to sign out and sign back in.
The process is the same to go back to your regular account.
This is how to do it with versions 3.2 (or the version updated 11th October depending on your device) to 4.0.x.