Reasons why an iPhone user may not see iBeacons

The common reasons an iPhone user may not see an iBeacon:

  • The iBeacon detection time will vary based on the app status.  If the app is in the foreground the app will recognize iBeacons almost immediately.  When the app is in the background it may take longer.
  • The device might have Bluetooth disabled – it must be enabled for beacons to be detected
  • The physical iBeacon device may not be properly configured with correct data, e.g. UUID, major id, minor id, etc
  • The iBeacon may have been moved from its expected location
  • The battery on the iBeacon may need replacing
  • The environment around the iBeacon is interfering with the iBeacon signals, e.g. concrete, metalized glass, metal, water
  • The iBeacon may be defective
  • Other devices may be interfering with the iBeacon signals, e.g. 2.4GHz wireless WiFi routers, microwave oven, wireless speakers, video transmitters/receivers, etc
  • The iPhone many need to be updated to the latest version of iOS
  • The iPhone may need to be power-cycled to restart iBeacon monitoring due to iOS issues
  • The iPhone may have defective hardware (low probability)
  • A 3rd party iPhone protective case/cover may be blocking its ability to receive Bluetooth signals

Operational considerations related to iBeacon/Beacon deployment are described in this knowledge base article.