Companies

For vacation / touristing purposes, I did some travel. When leaving the comfort of EU/ETA-region cell phone mobile data changes into something tricky. Most telcos here in Finland offer you 15 GiB of roaming transfer per month inside EU/ETA. As I travelled into post-brexit UK, the gravity of current roaming agreements hit me. For those unaware (like me on London Heathrow airport): nothing works and if works, expect to pay per-GiB on gold bullions.

At hotel, free Wi-Fi was more than welcome addition to their service offering. With that I was able to figure out what the heck happened to my iPhone data and what measures could I take to enable it.

After weighing all the options, my solution was to purchase an eSIM. That's something I never even considered before. Being in "the spot" I just went for Holafly eSIM. I'm 99,9% sure their offering is not the best nor cheapest, their product simply was easily available. Their marketing must be superb!

List of options considered, but abandoned for different reasons included following:

• Not having data in my phone.
• Relying on public Wi-Fis. They were generally available in many sights and locations.
• Enabling non-EU/ETA data roaming on my subscription.
• Purchasing a prepaid SIM from nearby groceries store. They were generally available, not too expensive and easy to obtain.

This is what I paid with a credit card:

$19 USD. Living in Finland, the country most of the mobile stuff was invented at, the price for unlimited 5 day data was horrible. This is what Holafly delivered me via email:

A QR-code! What! Are eSIMs distributed as QR-codes? Really?
More googling revealed: yes, that's correct. An eSIM is essentially a QR-code.

Payload of above matrix barcode would be as follows:

LPA:1$h3a.prod.ondemandconnectivity.com$8083B8A60025B1BA0E92A460388592035501C61BB74516AB176BA714D64AD60B

Studying the topic more with eSIM Whitepaper - The what and how of Remote SIM Provisioning and How Does an eSIM Work? Acronym LPA from the QR-code stands for Local Profile Assistant. Most stuff encoded into a QR-code I've ever seen has some sort of classifier as the initial value, so having something there would be expected. Next section with $-signs contain a hostname to contact followed by a password to provide for a server answering to requests on mentioned hostname to issue details of my newly purchased subscription for my phone. Host h3a.prod.ondemandconnectivity.com translates into 91.240.72.102, property of Thales group.

After walking through iPhone new data profile wizard, this is what I ended up with:

For unknown reason, the name of my eSIM was "Travel". That's something that can be chosen and renamed, even. Taking a look into the settings of my Travel-profile reveals following:

Whoo! That's an Austrian telco 3 subscription. The name "Drei" is German and means three (3). There are number of subsidiaries on 3 or Hutchison 3G Enterprises S.A.R.L., in case you are unaware of such telco group.

Now that I had mobile data, the obvious first thing was to verify where my Internet exit-node was located at. It seemed, my IPv4-range 91.223.100.0/26 was operated by Nexthop AS from Norway. A closer look on their geo-feed at https://geofeed.wgtwo.com/geofeed.csv revealed two network ranges of /26 or 62 available addresses:

# prefix,country_code,region_code,city,postal
91.223.100.0/26,GB,ENG,London,EC2V
91.209.212.0/26,GB,ENG,London,EC2V

Ultimately I was happy. Everything worked well, my iPhone had data connection for maps, googling, mail and iMessage.

To summarize:

1. My iPhone is designed in California, USA and manufactured in China.
2. I purchased an eSIM from Holafly, a Spanish company.
3. I paid US dollars for the product on their website located in an UK server.
4. What I got delivered from the purchase was credentials to connect to a French server.
5. Response payload of from the French server was an Austrian mobile data subscription.
6. Subscription's public Internet exit was located at United Kingdom, operated by a Norwegian company.

That's what I call an international operation!

PS. If you can hack the above eSIM to work for you, please inform me. It's a pre-paid, so I won't be the one taking the loss.