As a summary: Wifi Assistant has nothing to do with setting up the network link (GSM PIN, WPA keys etc). I wrote it to scratch my itch which was that at work, whenever my phone was disconnected for 30 minutes or more, the next time it connected, all web requests where intercepted and redirected to a Captcha test page which had to be completed before any connections were passed on to the Internet.

Never heard of any "standard" passwords. You might want to look at http://www.fon.com/en/ for a solution to share Wifi with peers. They might have defined their "standard" password?

Interesting. What country is this?