Headspin allows you to test instantly on global cell networks without adding any code.
Using the Headspin platform, you can collect data from your app and mobile website on real carriers and in real cities around the world. You also get aggregate network metrics to find performance trends build over build.
Location : Mountain View & Bangalore.
URL : https://headspin.io/
Headspin platform also allows you to remotely SMS, Message, Voice Call or Test App Performance from your keyboard and mouse.