If you have question about your device, go to your device page and click "Discussion" on the left to access specific group. For example, if you have Samsung Galaxy S II, go to http://gallery.mobile9.com/o/samsung+i9100+galaxy+s+ii_3430/ and find the discussion button to go to Android group. There, you can ask questions.
or browse the Nokia FAQs, Sony Ericsson FAQs, Motorola FAQs for quick answers.
If you know a lot about phones, help others by going to that section and start answering questions. Apart from earning goodwill, you can also earn achievement points. It will help you to get to the Top 100 Achievers. Besides, you can also help selecting the best answers by casting your vote for in voting questions.