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Comment by sergers | Hacker News Reader

Living close to the Canada US border this happens all the time.

Op could have been at the border for an hour in the lineup roaming as the line can be several hours to get through at the US-can truck border crossing and/or the peace arch crossing they traveled through, need more details.

My phone might pickup a cell tower in US while in Canada at home and I get hit with roaming...

Just need to contact carrier and explain that you were not across border.

There is a reason why your phone has turn off data when roaming options... For people who don't have roaming data plans so you don't accidently use roaming data.

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I'm the OP. I heard similar stories - a friend got an AT&T bill for $1200 after getting off a plane in Europe (from US) and turning it on for 1 minute.

I'd bet my reputation that AT&T is bundling data packets across the border - and that this could be the basis of a big class action suit.

In my case, I was driving northward from Oak Harbor to Vancouver. Roaming was off on my AT&T phone - so there should have been no intl data billed until I turned it on for that one minute.

A roaming clearing house is an organisation that manages the billing between carriers in roaming agreements. These clearing houses exchange data in a common format (bytes per session) between telcos. It's almost certain that AT&T use one for their roaming agreements.

If pressed, AT&T would need to correlate three pieces of information - the clearing house data, their billing, and the canadian network provider's logs. Each entity is legally separate here - if all three logs line up, it's going to be hugely compelling evidence.

It's very unlikely that AT&T is gathering up your data charges and billing you as you go over the border - it would be supreme incompetence at a carrier of this scale. More likely, something's gone wrong at the clearing house, and you should press them for aligned, detailed records. (I audited telco billing systems for a few years.)

But, is it really worth $30? I'd just pay TBH.

I think what he's suggesting isn't that the logs don't line up, but that AT&T may be purposely switching the phone to use the data roaming opportunity. Even though carriers gouge each other horribly on roaming, the marginal profit may be even more to the consumer. If this is true, it would be a scandal.

OP sounded pretty sure, but I'm skeptical.

I have the same issue. In-laws have a business in a small town north of Port Huron which is across the lake from Canada.

With nothing between the town and Canada but the lake, often my phone would randomly switch between AT&T or Rogers. I'll get hit with insanely expensive roaming charges without realizing it. Not till the phone switches back to ATT and I get a text message. That requires me to call ATT and deal with it.

It's such a headache that I just turn off the phone when I go there. My in-laws and all their friends in that area sticks with Verizon for this reason. ATT needs to find a way to be smarter about geo-location and not just randomly switch around when one is near the border.

Turn off data roaming.

Can't you just go into the mobile network settings and manually select a network instead of leaving it on auto?

> My in-laws and all their friends in that area sticks with Verizon for this reason.

How does that help? My Verizon phone used to roam onto Canadian networks if I got too close to the border.

> ATT needs to find a way to be smarter about geo-location and not just randomly switch around when one is near the border.

No kidding. It's not like they don't know exactly where you are.

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