Twitter Apps Authentication - without another mobile number

I recently created a new twitter account (Damn Nature, You Scary ). I had trouble registering a new app as, apparently, each app needs a (unique) mobile number.

The process wouldn’t let me change the permissions of the new app to read and write.

I managed to get this working by:

1. Download the app on my mobile (iOS in my case, although Android apparently works, too)

2. Log into the app

3. Still on your mobile, go to http://dev.twitter.com/apps

4. Change the permissions of your app to Read & Write

5. Click Update

That should work!