An apk runs just fine in my device. App internally makes a web service call in an async task to a server to fetch data. But when I upload same apk to google's cloud test lab and run Robo test for it,same web service call fails with error as:
Caused by: java.lang.RuntimeException: Failed : HTTP error code : 400
Does google's cloud test lab don't support such calls or Robo tests have some limitations?
Which port are you using to fetch the data? If you are using ports other than 80 or 443, it will not work.