How to clear iOS iBeacon cache?

[Jefferson]

I started developing a beacon app and used BLE_GAP_ADV_TYPE_CONNECTABLE_SCANNABLE_UNDIRECTED advertising type.  I then changed the type to BLE_GAP_ADV_TYPE_NONCONNECTABLE_NONSCANNABLE_UNDIRECTED on the same nRF device and my iOS app cannot receive ranging events from it anymore.  I think iOS is caching the initial advertisement and considers it an error when it receives a different advertisement type later on.  If I change the nRF BT address, then it works with the BLE_GAP_ADV_TYPE_NONCONNECTABLE_NONSCANNABLE_UNDIRECTED advertisement.  It also works if I use a new nRF device.  I uninstalled my app and restarted the phone and it does not resolve the problem.  Is there some other way to clear all the beacon cached data on iOS?

[Mttrinh]

Hi,

Can you try turning the bluetooth on your phone off and back on again? See if that helps.

[Jefferson]

It didn't work.

[Jefferson]

I figured out the problem was due to iOS doing some filtering of advertisement packets from the same device.  I start out advertising in non-beacon mode and then switch to beacon based on user action.  If I don't advertise in non-beacon mode and go straight to beacon mode, then I don't have the problem.  I fixed the problem by using a static random address in non-beacon mode and a random non-resolvable address in beacon mode.