If a remote control is not available then you can enter the debug menu on an IFP unit using the step below. 

1. Open IFP's Settings

2. Tap System -> About Device

3. Tap Android Version 3-5 times
The number of taps varies between the different generation of IFP, but the sequence is the same.

4. Android easter egg will appear

5. Press Back once

5. Tap Kernel Version 3-5 times

6. Debug menu will appear on the left side