Okay I found this information that gives a deep list of information about whitelist for hotspots and phones.https://theknowledgeburrow.com/what-is-whitelist-and-regular-usage-tmobile/
Your mobile hotspot is equipped with a whitelist function that will allow you to secure your network's privacy. ... When the primary user deactivates this feature, all other users will be allowed access to network via Wi-Fi and use of correct password. You can limit who can use your hotspot's password or QR code to connect to your hotspot: Normal mode: Allow any device to use them to connect. White list mode: Only allow devices to use them if they're on your list The function should be similar for other modelshttps://www.t-mobile.com/support/devices/mobile-internet/alcatel-linkzone/whitelist-function-alcatel-linkzone
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