Why Can’t Fing See MAC Addresses on iOS 11?

The Fing network scanner sadly cannot show MAC addresses on iOS 11. The reason for this is that Apple has blocked any app from accessing MAC addresses in the ARP table of the iPhone’s Operating System (iOS). Therefore, MAC addresses can no longer be captured during a network scan performed on an iPhone.

Important: Please note the Fing Android App and Fingbox are not affected at all by these changes. We suggest downloading the Fing network scanner for Android or getting a Fingbox to continue scanning and troubleshooting your networks as usual.

iOS 11 impact on Fing Network Scanner

Our inability to access the ARP table on iOS 11, has the following impact on the free Fing network scanning app when running on an iPhone:

  • MAC addresses of devices can no longer be discovered through the ARP Table.
  • Device manufacturers can no longer be recognized as these come from the MAC addresses, although we will still attempt identification on a best effort basis using other network information that it is still available.
  • The identification will be based on IP Addresses.  Custom names and icons can still be assigned to devices, but you need to make sure your DHCP assigns the same IP address to the same device.
  • The Wake on LAN feature will be disabled
  • The quality of the Device Recognition may be decreased, though we can still identify devices from other means, including all available discovery protocols.

We would encourage users to insert as many details that you can about the device.

This will assist with improved device identification in the future.

Was this article helpful?

Related Articles