Forum Discussion

Wounded_Knee's avatar
Wounded_Knee
Network Novice
5 years ago

Home Internet - I do not recognize a device on my network

In the TMobile Home Internet app, under “Devices”, I recognize all of my devices EXCEPT one — the list includes a mystery device with its IP address and its MAC address.

This mystery device is currently shown as being offline.

I changed my network password during initial setup (two days ago), and I believe my network is secure.

  1. Does TMobile connect something to my network?
  2. Does the app assign new IP and MAC addresses each time a device connects to the network, and maybe the app is displaying information from when a device was previously connected by me?
  3. Is there any easy way for me to determine what this mystery device is?

Thanks.

 

 

  • linanbob2's avatar
    linanbob2
    Roaming Rookie

    I assume you’ve gotten the MAC IDs off each of your devices and compared? Maybe there’s a device you hadn’t considered like a smartwatch or somesuch?

    MAC IDs are inherent to the device and cannot be changed. They can be spoofed, but I highly doubt T-Mobile would have a need to do that.

    The router could assign a new IP when you connect, I haven’t paid much mind to that as it usually doesn’t matter.