 <p>You could also download Unity Remote 4 for your Mobile phone. It really helped me a lot : <a href="http://docs.unity3d.com/Manual/UnityRemote4.html" rel="nofollow">http://docs.unity3d.com/Manual/UnityRemote4.html</a></p> <p><strong>edit</strong>:</p> <ol> <li>Download &amp; install Unity Remote 4 on your device.</li> <li>Enable USB debugging on your device and connect it to your pc.</li> <li>Start Unity Remote 4 and then restart Unity.</li> <li>In Unity, navigate to: Edit -> Project Settings -> Editor.</li> <li>In the Inspector, you can select now under "Unity remote' your device.</li> <li>Hit the Play Button in Unity.</li> </ol>