[Replicant] Sim card is not working D:

[Denis 'GNUtoo' Carikli]

On Thu, 29 Dec 2022 23:58:07 +0100
dolphinana via Replicant <replicant at osuosl.org> wrote:
> Hello,
Hi,

> Today, I got a new sim card and tried it on that phone only to find
> out that it didn't detect the card. I tried it on two feature phones,
> one of them detected the sim card but then said SIM CRASH, the other
> detected the sim card but says that I can only do emergency calls.

> I also tried it on someone else's fairly modern smartphone and it
> worked, but not on the other phones. I tried inserting my old sim
> card into my Galaxy S3 and it also didn't detect the card whereas one
> of the flipphone detected the card so I suppose that Galaxy S3's EFS
> partition got corrupted? 

> Does the sim card only work on modern cellphones?
Maybe it's related to the change from SIM cards to UICC cards?[1]

> When I first installed Replicant, I made an EFS backup and now I did
> the backup again and I compared those two backups and they happen to
> be different. I also compared the new and old nv_data.bin and they
> are the same.
The modem writes some data to nv_data.bin so it's not a problem if they
are different. To find out if the EFS is corrupted you could try to see
if the IMEI is valid and/or correspond to the one written in the
battery compartment / under the battery.

Note that there are two copies of the modem data in the EFS partition,
so if some data is really corrupted, it might be possible to find
uncorrupted data in your backup or in the second copy of the modem data.

> The sim card is from swedish telephony operator called Hallon. 
> I've read their website and they said that the sim card will not work 
> on devices without 3G/4G support. Galaxy S3 has 3G support?
It does has 3G support.

> Is there anything what I can do to fix this problem?
What Replicant version are you running? Replicant 6.0 up to 0003
(included) had a bug that resulted in some SIM cards not being
detected. That bug was fixed in Replicant 6.0 0004.

So if you don't have the 0004 version, upgrading might fix the problem.

References:
-----------
[1]https://en.wikipedia.org/wiki/SIM_card#USIM

Denis.
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