I understand your concern with the error you are receiving when trying to connect via 3G or 4G. You may want to test the connection speed with the Android Razr, you can do so at this link: Testing your Speed Connection . Here is also another link that provides more information on troubleshooting the issue you are currently having: Troubleshooting SlingPlayer for Android Tablets video quality issues. You should go in and reconfigure your Slingbox to work with you new router as well. Hope these help!
The Sling Moderation Team
Thanks for using our Answers forum. I understand that you just purchased a new RAZAR and want to watch your Slingbox on it. I found an article that explains where to find the app and everything. How to buy Slingplayer for Android phones and/or Tablets.
Hope this helps.
Sling Moderation Team.