The recently announced Cat S60 phone is the world’s first smartphone with built in thermal camera. However, if you would like to skip buying the Cat phone and turn your iPhone into a thermal imaging machine, then you should check FLIR One thermal imaging accessory for iPhone.
It fits iPhone 5 or 5s and turns it into a powerful thermal imaging devices. It comes with the FLIR One app for live infra-red thermal imaging. That makes your iPhone into a real-time night vision device.
Beside thermal imaging can detect energy inefficiency, heat loss or water leaks, measure the temperature of invisible heat source with this accessory.
If you have and Android phone, you can still use the FLIR One thermal imaging accessory for Android phones which is as same good.