I have unlimited cellular data on my phone but not if I use it as a hotspot.

Flying Squid@lemmy.world to Mildly Infuriating@lemmy.world – 855 points –

What is the difference between cellular data being used on my phone and cellular data being used on my notebook? Data is data.

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How do they even know if you use your data as a hotspot? That's just ridiculous!

Probably local/system services on the app when the SIM is activated (like it's with sim locked phones)

Nope, it’s either inspecting the TTL of packets coming from your phone (unless you have a VERY custom setup, the TTL from devices other than your phone will be very different), or it’s deep packet inspection. I tried to trick t-mobile last year into giving me home internet on a phone sim, so I did a whack ton of research.

Did you find a way to avoid detection?

On US Mobile (Verizon) using a VPN on my phone when tethering seems to bypass detection. At least the meter on the dashboard says I've used 0gb hotspot.

They look at the TTL of the incoming packets. This can be modified in the windows registry.

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