In this video, a former Apple tech shows you how to access the SECRET iPhone app that’s been hiding in plain sight on your iPhone.

First of all, yes, there is a hidden iPhone app! In it you’ll find lots of technical data about your cellular network and how your iPhone is connecting to it. Cellular technicians will often use this app to test your signal strength and diagnose other cellular issues.

So, how do you get to the secret iPhone app? Open up the Phone app, enter *3001#12345#* and…