First right click of on your project
->Run As -> Run configration
![enter image description here](https://i.stack.imgur.com/Mmws7.png)
Now Select the Target Tab and Click Radio button "Always Prompt to pick up the device"
![enter image description here](https://i.stack.imgur.com/KPUZi.png)
Now you should have to install Google Usb Driver from the SDK manager.
![enter image description here](https://i.stack.imgur.com/lccy4.png)
Now you must allow usb debugging on device.Go to Settings->Application->Development(on API level 10).Also one more thing your min/max/target must be equal to your device(android:targetSdkVersion="10") in your AndroidManifest.xml.
![enter image description here](https://i.stack.imgur.com/og1rw.png)
After Doing these steps again run your app from eclipse with your mobile connected you will find your mobile like this
![enter image description here](https://i.stack.imgur.com/K86Vq.png)
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