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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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[-] tacostrange@lemmy.ml 298 points 7 months ago

This is why we need net neutrality

[-] Zachariah@lemmy.world 120 points 7 months ago
[-] Ioughttamow@kbin.run 80 points 7 months ago

Nationalize the tubes

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[-] TWeaK@lemm.ee 21 points 7 months ago

This has little to nothing to do with net neutrality, which refers to back end L1 and L2 network interconnections.

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[-] shani66@ani.social 103 points 7 months ago

This is one of those 'innovations' people mean when they say capitalism drives innovation. Not the hotspot, the pointless extra charge for something your phone can just do on its own.

[-] hellothere@sh.itjust.works 77 points 7 months ago* (last edited 7 months ago)

How do they know if the source of data is hotspot? I'd imagine there is a way to stop your phone grassing on you.

[-] ptz@dubvee.org 114 points 7 months ago* (last edited 7 months ago)

There's different internal network configs (APNs), and hotspot uses a different one than regular mobile data. ( or at least it used to). Those can be configured and metered separately from the carrier's end.

LineageOS, and maybe some other custom ROMs, wouldn't do that and would put the hotspot and mobile data on the same APN to get around that.

[-] wesker@lemmy.sdf.org 70 points 7 months ago

Can confirm, switching to Graphene solved this problem for me a long while ago.

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[-] CosmicCleric@lemmy.world 68 points 7 months ago

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

The difference is the cellular company's profits amount.

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[-] jet@hackertalks.com 58 points 7 months ago

I've had great success getting around these restrictions.

CalyxOS + Always on VPN (mullvad)

The secret sauce is using a Android version that allows you to share your VPN with hotspotting. I believe only calyxos and lineage allow you to do this. Since the VPN client is running on the phone, all the traffic that originates from the phone will look like phone data, with the appropriate time to live, OS fingerprinting, etc.

This can't be done on stock Android, because it does not allow the VPN to be shared over tethering. So tethering traffic will not getting capsulated on the VPN client. There's a security argument for this, but I prefer the user flexibility of allowing all the traffic to get VPNed.

It's still possible to do this without VPN sharing on the phone, you can use normal tethering on a unlocked phone, like stock Android. You just have to modify the traffic signature to look like whatever the carrier is looking for. Setting the appropriate time to live, using a VPN, and doing other OS fingerprinting tricks to keep the traffic consistent. It's much easier to use a ROM that lets you share the VPN

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[-] VeganCheesecake@lemmy.blahaj.zone 55 points 7 months ago

My ISP's a dick, but to my knowledge, unlimited has to mean unlimited around here. There where months where we had Problems with our fibre, so I did everything over a hotspot from my phone. Used 100's of GB's no one ever complained.

Get proper consumer protection laws, people.

[-] FlyingSquid@lemmy.world 40 points 7 months ago

*Cries in American.*

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[-] mp3@lemmy.ca 50 points 7 months ago

Which is bullshit. Who cares if you download something at full speed on your phone or through the hotpot? A bit is a bit, doesn't matter where it ends up when received by the phone's modem.

[-] Zachariah@lemmy.world 58 points 7 months ago

It’s a sneaky way of having a bandwidth cap without having a bandwidth cap. Mobile devices have smaller storage, so you’re less likely to use as much bandwidth compared to a laptop. Also a single device going to use less data than multiple devices sharing a hotspot.

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[-] solrize@lemmy.world 44 points 7 months ago

If it's an android phone, enable dev mode, install adb on your laptop, run an sshd under termux on the phone, and you should be able to set up iptables to forward packets from the laptop through the phone. The phone won't know that it's being used for tethering. Although I hadn't seen the stuff about packet TTL before. Maybe it's as simple as just adjusting that.

[-] owenfromcanada@lemmy.world 24 points 7 months ago

A less complicated method that I used for years:

  • Install SimpleSSHD on your phone
  • If you're running Windows, install PuTTY on your PC
  • Connect to SimpleSSHD through PuTTY/ssh and set a parameter for dynamic forwarding (CLI option is -D 8888)
  • Set your web browser or application to use SOCKS5 proxy at localhost port 8888

It doesn't redirect all traffic (you'd want to avoid system updates, for example) but might be easier than messing with iptables.

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[-] 01189998819991197253@infosec.pub 39 points 7 months ago* (last edited 7 months ago)

Att et al keeps throwing around the word 'unlimited'. I actually had a conversation with Verizon, before I dropped them, and actually used this exact quote to the guy...

He was like, "princess bride. Nice. But, yeah, I have to read the script."

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[-] Maggoty@lemmy.world 38 points 7 months ago

Well that's because, ~~fuck you pay me~~ those are special data packets.

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[-] Veraxus@lemmy.world 37 points 7 months ago

Data is data in the same way water is water and electricity is electricity; nobody should have the power to dictate how you use it. I really wish we’d enshrine genuine net neutrality and shut this kind of nonsense down.

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[-] KillingTimeItself@lemmy.dbzer0.com 35 points 7 months ago

you also have unlimited data, unless you hit a data cap, and then you hit a data rate limit, so technically your data is actually limited.

Can we legislate these fucks to just actual provide the bandwidth they claim to? I.E. a max cap of the max bandwidth * the max amount of time it can be available for in a billing period. Anything else is fraud IMO.

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[-] skuzz@discuss.tchncs.de 34 points 7 months ago

It's a really weird and very American problem. Our home broadband either doesn't exist or is really expensive in any given market, and tends to have clauses, conditions, etc. Like Comcrap limiting people to 1TB/mon (very easy to burn through quickly by just watching some television programs) unless they pay more for "unlimited". People, as taught by Capitalism, hunt for the best deals. Paying one bill instead of two saves money. Some have light enough home Internet requirements that they don't need expensive home broadband.

Then the companies get pissed that we're doing what we are supposed to do, find the best deal for our needs, so they set up false gates to make sure we follow the path they want us to follow. Then they pay off the regulatory agencies to allow terms like "unlimited" mean not unlimited, 3G HSPA+ being known as 4G. 4G being known as LTE, 4GLTE or 5Ge. 5G being known as 5G, 5G+, 5GUW, 5GUC, (even though, with the exception of T-Mobile in many markets, that 5G will actually be non-standalone and anchored to an LTE packet core, not 5G SA) and all the other damn arbitrary marketing buzzwords. All of which really mean nothing because the 5G spec allows a carrier to flip on the 5G availability flag on a phone even if 5G doesn't exist in your market.

Most of this, AT&T is the biggest perpetrator of by far. Especially the lying about 5G.

The rules are all made up, nothing is real. Time for the arbitrary monthly bill increase for no reason! Pay up, chump!

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[-] Honytawk@lemmy.zip 32 points 7 months ago

Unlimited with a limit

[-] 4am@lemm.ee 29 points 7 months ago* (last edited 7 months ago)

You see, this is why we need net neutrality

EDIT: see, im glad someone else said it already

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[-] istanbullu@lemmy.ml 28 points 7 months ago

How can they tell if you are tethering?

[-] orangeboats@lemmy.world 50 points 7 months ago* (last edited 7 months ago)

Not sure if it's still the case today, but back then cellular ISPs could tell you are tethering by looking at the TTL (time to live) value of your packets.

Basically, a packet starts with a TTL of 64 usually. After each hop (e.g. from your phone to the ISP's devices) the TTL is decremented, becoming 63, then 62, and so on. The main purpose of TTL is to prevent packets from lingering in the network forever, by dropping the packet if its TTL reaches zero. Most packets reach their destinations within 20 hops anyway, so a TTL of 64 is plenty enough.

Back to the topic. What happens when the ISP receives a packet with a TTL value less than expected, like 61 instead of 62? It realizes that your packet must have gone through an additional hop, for example when it hopped from your laptop onto your phone, hence the data must be tethered.

[-] orangeboats@lemmy.world 27 points 7 months ago* (last edited 7 months ago)

This also explains why VPN is a possible workaround to this issue.

Your VPN will encapsulate any packets that your phone will send out inside a new packet (its contents encrypted), and this new packet is the one actually being sent out to the internet. What TTL does this new packet have? You guessed it, 64. From the ISP's perspective, this packet is no different than any other packets sent directly from your phone.

BUT, not all phones will pass tethered packets to the VPN client -- they directly send those out to the internet. Mine does this! In this case, TTL-based tracking will still work. And some phones seem to have other methods to inform the ISP that the data is tethered, in which case the VPN workaround may possibly fail.

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[-] bhamlin@lemmy.world 19 points 7 months ago

If you're using the built-in unmodified hotspot on pretty much all phones these days, mobile data for the hotspot goes through a different apn. Your phone requests data on one channel, while hotspot data goes through another.

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[-] Presi300@lemmy.world 26 points 7 months ago

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

[-] FlyingSquid@lemmy.world 21 points 7 months ago

Makes you wonder what else they know about what you're doing online.

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[-] BilboBargains@lemmy.world 26 points 7 months ago

Use a VPN. ISP are being disingenuous when they claim a data connection is unlimited at the point of purchase and then slug us with restrictions when we try and use it. If they can detect a tether, the VPN should obscure it.

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[-] Emerald@lemmy.world 25 points 7 months ago

128kbps is only mildly better then dial up lmao

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[-] tal@lemmy.today 23 points 7 months ago* (last edited 7 months ago)

max 128kbps

TMobile doesn't have a hard throttle, but they'll cut priority under congestion so that if wherever you are has someone else vying for the bandwidth, they get first shot.

Frankly, given that the limited resource is the cell bandwidth, that seems like a more reasonable way to go. It doesn't hurt them much if someone wants available bandwidth and there's no contention for it from others.

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[-] Semi_Hemi_Demigod@lemmy.world 23 points 7 months ago

I'd have a lot of fun trying to get around it. For example, if the phone and the computer were on the same non-Internet-connected wifi network, and you set up an SSH server to send outbound requests through the 4G modem, would they be able to find out you're using the hotspot?

[-] wander1236@sh.itjust.works 20 points 7 months ago

There are a ton of methods carriers use to detect hotspot traffic, from the device itself handling the categorization, to TTL values attached to requests, to other very clever network sniffing strategies.

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[-] psion1369@lemmy.world 23 points 7 months ago

I used to root my phone and then could use the hotspot without my provider knowing.

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[-] Raiderkev@lemmy.world 23 points 7 months ago

It's because at&t also sells home Internet. If you have unlimited hotspot, then you wouldn't want that sweet sweet DSL or whatever shit Internet ATT sells

[-] MonkderZweite@feddit.ch 21 points 7 months ago

They can detect you using your phone as hotspot? Creepy.

[-] jkrtn@lemmy.ml 23 points 7 months ago

The phone reports it, yeah, it is creepy. Should be illegal to even have the knowledge to differentiate.

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[-] LucidDaemon@lemmy.world 20 points 7 months ago

If you use a VPN it can also mask it too. That's how I used to get around it before moving to Google Fi.

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[-] ChaoticNeutralCzech@feddit.de 18 points 7 months ago

Some or all major mobile providers outright BAN hotspots in their ToS. However, they don't enforce the rule as it would be very unpopular.

And we still have pretty much the most expensive cellular data in the EU. The triopoly sucks.

[-] jordanlund@lemmy.world 17 points 7 months ago

Your data is unlimited, the SPEED of the data is not. ;)

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[-] ikidd@lemmy.world 17 points 7 months ago

Plug it in via USB cable, shouldn't register as a hotspot then. At least that's how it works on linux, IDK about other OS.

[-] skuzz@discuss.tchncs.de 18 points 7 months ago

Carriers in the US configure phones so that the tethering APN is always used for tethering specifically over all interfaces, the traffic is also tagged with a different TTL. They also do some malarkey with deep packet inspection (in case you figure out how to modify the APN) to identify if a computer is using the connection (like the initial phone home Windows and Mac both do to determine the type/quality of Internet connection they are connected to.)

All of this one can work around, but it becomes an annoying game of cat and also cat, and then if the carrier "decides" you violated the "spirit" of their TOS, they'll cancel your plan and take your number away.

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this post was submitted on 28 Mar 2024
858 points (96.5% liked)

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