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by waweic 172 days ago
esim.me, 9esim and "sysmocom eUICC for eSIM" are eSIMs in the SIM card form factor that you can load the SIM profiles onto and use them in any device with a SIM card slot (and of course transfer between devices). In my opinion, that's the best of both worlds.
1 comments
ACCount37 172 days ago
It's good, but they're expensive as fuck for what they are.

The best option would be a software-only eSIM with full transfer support, IMO. But we don't have that, because GSMA says we can't have nice things.

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mbirth 172 days ago
> It's good, but they're expensive as fuck for what they are.

Yep, I remember a time where you could extract the Ki and IMSI from legit SIMs and write that to a bog standard Goldwafer card (which were also used for cable TV hacking) including some SIM emulation software and thereby clone the SIM. That was like 30 years ago and the only thing that changed in SIMs since then is better encryption.

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ACCount37 171 days ago
If you had the relevant keys? You wouldn't even need a blank card. You could just make a software emulator and force the smartphone modem to use it.

The obvious issue being: it's pretty hard to acquire raw key material. Most vendors refuse to sell it, and the workarounds are messy.

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