Thank you for contacting us.
I am afraid I was unable to recreate the issue that you have described in your ticket. As the error states in most cases the reason for such behavior is the lack of Internet connection or misconfigured network parameters.
This being said, could you check if you are able to open platform.telerik.com from the browser of your device? Also. please provide information on the exact steps that you use, so we could attempt to reproduce the problem. It would be helpful if you could share the AppBuilder client you use and the Android version of the device you are testing on.
I look forward to hearing from you.
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Telerik Feedback Portal
and vote to affect the priority of the items