It used to be that you would have to carry around a laptop, and perhaps an additional wireless adapter, to enjoy wifi monitor mode while out and about. You may be able to replicate this with a much more pocket-friendly smartphone. But only certain phones have the necessary wireless chipset. For this to work, you will need a rooted phone with an appropriate Broadcom BCM 4330 or BCM 4329 wireless chipset. You may be able to find out if you have a supported device from 'Ctrl-F'ing the comments at http://bcmon.blogspot.co.uk/2013/07/monitor-mode-reloaded_14.html bcmon , from the above link, is the app necessary for installing some patched firmware and enabling monitor mode on compatible phones. As the authors of bcmon note: please note that this code is experimental and you use it at your own risk and we are not responsible nor liable for any damage or loss of data. Sometimes unexpected things might go wrong and you might end up with a device that is no longer func...