This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
I guess I don't know what a 10 data response or a 160 data response is. The first steps I would try is to determine if the entire flow is working from Android to server and back again.
So long as your request/response is not encrypted (HTTPS), I would use tcpmon to see the request/response to confirm that Android is sending the proper HTTP request and the server is sending back the correct web service response. You can find tcpmon here: http://ws.apache.org/commons/tcpmon
If you have confirmed that all the plumbing is working correctly, then I would narrow it down to the web service parsing code within your Android app. Is the web service response JSON or SOAP based? Depending on what type, you would use different libraries. You should be able to test your parsing code using a unit test within your IDE. If everything looks good but it is still not working, then LogCat is your friend.