[craigts]

These are very cool, but unfortunately the last time I tried using BLE (specifically Estimote beacons with their sdk) in an Android app the interference with wifi made the experience unbearable. Presumably not all chipsets have the problem, but every single one I tested had trouble.

[heypiotr]

From my experience, this usually happens with the older/cheaper Android devices that use a combined BT+WiFi radio/chipset (Nexus 4, Galaxy S3 etc.)

Fortunately, the Android hardware is getting better and better, e.g. I've noticed no such problems on Nexus 5 or Galaxy Edge.