Over the past years, I’ve been using LineageOS on a 2019 high end smartphone. It has served me well over the years. When LineageOS moved from Android 11 and 12, however, they wanted me to side-load a new ROM image instead of using the app based updater. As I wasn’t sure if this update would … Continue reading LineageOS 20 on a Refurbished Pixel 6
It was predictable in some way that sooner or later, I would want to do yet another ‘upgrade’ in the flight simulator and move to something bigger. After the turboprop Daher TBM-930, which I started flying last year, it was either a private yet or an airliner. There is lots of choice and in the … Continue reading Reality Bites – Flight Simulation – Part 10 – Moving to ‘the Bus’
Another crazy year, both good and bad in so many ways, is coming to an end, so here I go with time honored tradition of looking back to what moved me this year in tech! In The Wireless Domain Obviously, there’s been a lot going on in the wireless domain again. While some parts of … Continue reading Things That Moved Me in 2022
We are quite a bit into January 2018 already and I still haven’t come around to reflect which things from back in 2017 ‘moved’ me. But finally here we go this is my 2017 round up from cellular to history.
I’m pretty much done with my introduction series on eSIM Remote Service Provisioing now but there is one important topic still missing that should be mentioned shortly: Downloading virtual SIM cards into an eSIM is not only interesting for consumer devices such as smartphones, tablets, watches, etc. but equally, if not even more, to embedded … Continue reading Embedded-SIM Intro – Part 8 – Consumer vs. M2M
It is obviously a must that any SIM card works in any cellular mobile device. By and large that works pretty smooth today. There is rigorous testing in place and I only know a few cases where SIM cards and devices did not harmonize and software updates were required to fix the issue. In the … Continue reading Embedded-SIM Intro – Part 7 – Interoperability
Wow, this is already part 6 of my introduction series on embedded SIM cards and it’s not going to be the last, there are still a few topics left. Today, a few words about what are referred to as ‘companion’ devices.
For device manufacturers one of the main advantages of an embedded SIM is that it requires much less space than the slot required for a removable SIM, even when it is a nano-SIM (4FF). But just how big are eSIMs that are soldered on the circuit board? Many pictures on the web seem to be … Continue reading Embedded-SIM Intro – Part 5 – eUICC Size
After introducing the eSIM (eUICC) Remote Service Provisioning (RSP) concepts in the previous 3 posts of this series it’s now time to have a look at the security implementation. Security is obviously of paramount importance in the process as the virtual SIM that is downloaded contains the identity (IMSI) of the user and the secret … Continue reading Embedded-SIM Intro – Part 4 – eUICC Provisioning Security
In the previous two parts of this series I’ve taken a look at how the eSIM and downloading virtual SIM cards into devices compares to using physical SIM cards today. Now that the general concept is clear, let’s name some of the components involved which will help a lot when reading the standards documents GSMA … Continue reading Embedded-SIM Intro – Part 3 – Acronyms