Same app, two different phones, one detects beacons the other doesn't


Starting to get to grips with the SDK. I’ve built a simple app that works as expected on my phone. Detects beacons and logs enter/exit times etc. However when I install app, via Xcode, only a colleagues phone it’s not detecting the same beacons. Location etc is authorised and bluetooth is on. Any newbie gotchas I should be looking for?

Getting no errors. didEnterRegion is just never triggered.

Any advice appreciated.


Weird. What’s the iPhone model and iOS version?