In this case, you can disable MAC address anonymization in the Welcome Screen. Doing so has security implications, so read carefully our [[documentation about MAC address anonymization|first_steps/welcome_screen/mac_spoofing]].
<div class="caution"> <p>Tails cannot hide the information that identifies your phone on the local network. If you connect your phone to a:</p> <ul> <li><p>Wi-Fi network: the network can see the MAC address of your phone.</p> <p>This has security implications that we explain in our [[documentation on MAC address anonymization|first_steps/welcome_screen/mac_spoofing]].Some phones have a feature to hide the MAC address of the phone.</p></li> <li><p>Mobile data network: the network is able to know the identifier of your SIM card (IMSI) and the serial number of your phone (IMEI).</p></li> </ul> </div>