eSIM and Sailfish OS

General
121

I was reviewing the lpac code, and for QMI drivers they have implemented an environment variable to indicate the SIM slot to use lpac/docs/backends/qmi.md at main · estkme-group/lpac · GitHub and driver: qmi_qrtr: Allow selecting SIM slot using environment variable by z3ntu · Pull Request #97 · estkme-group/lpac · GitHub , but for gbinder there seems to be nothing and the code detects the first available one lpac/driver/apdu/gbinder_hidl.c at main · estkme-group/lpac · GitHub .

I think it would be easy to patch it and put it in an environment variable like it is for QMI, but I don’t have a dual SIM device to test it.

122

If you can implement it without testing and send me the binary I can actually buy another 9eSIM to populate both slots.

1 Like
123

I think I’ve managed to do the manual selection using LPAC_APDU_GBINDER_UIM_SLOT:

  • Automatic selection as before (first slot with eSIM found, equals to LPAC_APDU_GBINDER_UIM_SLOT=-1):
    [21:34:17] defaultuser@Xperia10V:~✘☭ LPAC_APDU=gbinder lpac profile list
    Attempting to connect to android.hardware.radio@1.0::IRadio/slot1
    opened logical channel id: 1
    {"type":"lpa","payload":{"code":0,"message":"success","data":[{"iccid":"8932**********3352","isdpAid":"a000********************1100","profileState":"d
    isabled","profileNickname":"Firsty","serviceProviderName":"Firsty","profileName":"Firsty","iconType":"png","icon":"/9j/2wBDAAcFBgYGBQcGBgYICAcJCxIMCwoKCxcQE
    Q0SGxccHBoXGhkdISokHR8oIBkaJTIlKCwtLzAvHSM0ODQuNyouLy7/2wBDAQgICAsKCxYMDBYuHhoeLi4uLi4uLi4uLi4uLi4uLi4uLi4uLi4uLi4uLi4uLi4uLi4uLi4uLi4uLi4uLi4uLi7/wAARCABAA
    EADASIAAhEBAxEB/8QAGgABAAMBAQEAAAAAAAAAAAAABQIEBgADCP/EACwQAAIBAwIFAgUFAAAAAAAAAAECAwAEEQUxEhMhIlFhcUFCgZHBFVJToaL/xAAXAQEBAQEAAAAAAAAAAAAAAAAAAQID/8QAGREBA
    QEBAQEAAAAAAAAAAAAAAQARAiFB/9oADAMBAAIRAxEAPwD5trgCTgDJrgCTgb07p9iIFEkgBlP+aobUNqtrpbuA85KD9o3pKK0toh2xLnyRk1E3StcC3i7m+Y/BRU7qdbeFpD1OwHk10ALqAXrlQQvQE7CvO
    S3glGHiU+uOtZ1p5Wm55c8ecg+K0kb82FXU44lyPSg7DrYq70woC9uSwG6nf6UXT9he8/McgCyr/dVNXtQhFwgwCcMPXzWUM0sdcmaUdHt+NzOw7U6L71a1S7MKCKM4kYdT4FWbGPlWsS/HGT7mqVxpss0zy
    mZe4+NhVxDy1iHlLRouGFpiOrnA9hVTV5uZccsHtjGPrTMEYihSMfKMUY+lyu7O0y5Y5PSiOYRHMIqtHpxzZQ+35o/9Ik/mX7UpbRcmBIiclRvTkRpwI2fdzDeu6brIcfen7hRPauu4Zcj8UdJpUjyO/NXuJ
    O1KRry4VVjnhUAn2FORryP26RuXCzKM8KkgfSi49UkeRE5SjiIG9I27Ce1Rtwy4P5oBEMN6iPusgz96dL8nS+ZaC5l5MDygZKjai/1eT+FfvSGojNlN7fms5TpRp2oyqapK7qghXLHA60nPIIoXkPyjNDaRD
    zLjmEdsfX61b1mXhhWEHq5yfYUFzWoua0bfUpZpkiEK9x87Crt9JyrWVvjjA9zVbS7QwoZZBiRh0HgVV1i4DyCBT2p1b3pqHs1OfaWkXQQm3c4BOVPr4q3f2XPxJGQsq/3QFKWeplAEuAWA2cb/AFqCZjZ56
    MxlZF5sLIwxxLgjxWbWCVpuSEPGDgjxWijuIJRlJVPpnrXphQS3QE7mtJtt528rWBbeFY16ncnyagLVWuDcS4ZvlHwUVKW7toh3SrnwDk0Zdao7gpACg/cd6KEUK3qF8IFMcZBlP+aCJJOScmuJJOScmurmu
    3Jdv//Z","profileClass":"operational"},{"iccid":"8965**********7851","isdpAid":"a0000********************01200","profileState":"enabled","profileNickname
    ":null,"serviceProviderName":"Eskimo","profileName":"Eskimo","iconType":null,"icon":null,"profileClass":"operational"}]}}
  • Manual Slot 1
    [21:34:24] defaultuser@Xperia10V:~ ✔☭ LPAC_APDU=gbinder LPAC_APDU_GBINDER_UIM_SLOT=1 lpac profile list
    Attempting to connect to android.hardware.radio@1.0::IRadio/slot1
    opened logical channel id: 1
    {"type":"lpa","payload":{"code":0,"message":"success","data":[{"iccid":"8932**********3352","isdpAid":"a000********************1100","profileState":"d
    isabled","profileNickname":"Firsty","serviceProviderName":"Firsty","profileName":"Firsty","iconType":"png","icon":"/9j/2wBDAAcFBgYGBQcGBgYICAcJCxIMCwoKCxcQE
    Q0SGxccHBoXGhkdISokHR8oIBkaJTIlKCwtLzAvHSM0ODQuNyouLy7/2wBDAQgICAsKCxYMDBYuHhoeLi4uLi4uLi4uLi4uLi4uLi4uLi4uLi4uLi4uLi4uLi4uLi4uLi4uLi4uLi4uLi4uLi7/wAARCABAA
    EADASIAAhEBAxEB/8QAGgABAAMBAQEAAAAAAAAAAAAABQIEBgADCP/EACwQAAIBAwIFAgUFAAAAAAAAAAECAwAEEQUxEhMhIlFhcUFCgZHBFVJToaL/xAAXAQEBAQEAAAAAAAAAAAAAAAAAAQID/8QAGREBA
    QEBAQEAAAAAAAAAAAAAAQARAiFB/9oADAMBAAIRAxEAPwD5trgCTgDJrgCTgb07p9iIFEkgBlP+aobUNqtrpbuA85KD9o3pKK0toh2xLnyRk1E3StcC3i7m+Y/BRU7qdbeFpD1OwHk10ALqAXrlQQvQE7CvO
    S3glGHiU+uOtZ1p5Wm55c8ecg+K0kb82FXU44lyPSg7DrYq70woC9uSwG6nf6UXT9he8/McgCyr/dVNXtQhFwgwCcMPXzWUM0sdcmaUdHt+NzOw7U6L71a1S7MKCKM4kYdT4FWbGPlWsS/HGT7mqVxpss0zy
    mZe4+NhVxDy1iHlLRouGFpiOrnA9hVTV5uZccsHtjGPrTMEYihSMfKMUY+lyu7O0y5Y5PSiOYRHMIqtHpxzZQ+35o/9Ik/mX7UpbRcmBIiclRvTkRpwI2fdzDeu6brIcfen7hRPauu4Zcj8UdJpUjyO/NXuJ
    O1KRry4VVjnhUAn2FORryP26RuXCzKM8KkgfSi49UkeRE5SjiIG9I27Ce1Rtwy4P5oBEMN6iPusgz96dL8nS+ZaC5l5MDygZKjai/1eT+FfvSGojNlN7fms5TpRp2oyqapK7qghXLHA60nPIIoXkPyjNDaRD
    zLjmEdsfX61b1mXhhWEHq5yfYUFzWoua0bfUpZpkiEK9x87Crt9JyrWVvjjA9zVbS7QwoZZBiRh0HgVV1i4DyCBT2p1b3pqHs1OfaWkXQQm3c4BOVPr4q3f2XPxJGQsq/3QFKWeplAEuAWA2cb/AFqCZjZ56
    MxlZF5sLIwxxLgjxWbWCVpuSEPGDgjxWijuIJRlJVPpnrXphQS3QE7mtJtt528rWBbeFY16ncnyagLVWuDcS4ZvlHwUVKW7toh3SrnwDk0Zdao7gpACg/cd6KEUK3qF8IFMcZBlP+aCJJOScmuJJOScmurmu
    3Jdv//Z","profileClass":"operational"},{"iccid":"8965**********7851","isdpAid":"a0000********************01200","profileState":"enabled","profileNickname
    ":null,"serviceProviderName":"Eskimo","profileName":"Eskimo","iconType":null,"icon":null,"profileClass":"operational"}]}}
  • Manual Slot 2 (firmware disabled eSIM chip in Xperia 10 V)
    [21:34:31] defaultuser@Xperia10V:~ ✔☭ LPAC_APDU=gbinder LPAC_APDU_GBINDER_UIM_SLOT=2 lpac profile list
    Attempting to connect to android.hardware.radio@1.0::IRadio/slot2
    Failed to open APDU logical channel: 38
    {"type":"lpa","payload":{"code":-1,"message":"euicc_init","data":""}}

@cypherpunks If you have a dual SIM device, you can try changing the 9eSIM SIM slot and see if the detection changes by manually selecting 1 or 2.

I am temporarily uploading the rpm with the change here (available for 30 days) Lufi - Disroot file uploader . If it works, I will open an issue in the lpac repo to discuss including the change in the code, since that part of the code has a comment indicating that, for the time being, they don’t want to force the user to make the manual selection.

2 Likes
124

I can confirm that it works as expected:

  1. Initial situation - slot 1: regular SIM, slot 2 eSIM

LPAC_APDU=gbinder lpac profile list
Attempting to connect to android.hardware.radio@1.0::IRadio/slot1
Failed to open APDU logical channel: 17
Attempting to connect to android.hardware.radio@1.0::IRadio/slot2
opened logical channel id: 1
{“type”:“lpa”,“payload”:{“code”:0,“message”:“success”,“data”:[{“iccid”: …

LPAC_APDU=gbinder LPAC_APDU_GBINDER_UIM_SLOT=1 lpac profile list
Attempting to connect to android.hardware.radio@1.0::IRadio/slot1
Failed to open APDU logical channel: 17
{“type”:“lpa”,“payload”:{“code”:-1,“message”:“euicc_init”,“data”:“”}}

LPAC_APDU=gbinder LPAC_APDU_GBINDER_UIM_SLOT=2 lpac profile list
Attempting to connect to android.hardware.radio@1.0::IRadio/slot2
opened logical channel id: 1
{“type”:“lpa”,“payload”:{“code”:0,“message”:“success”,“data”:[{“iccid”: …

  1. SIM cards swap - slot 1: eSIM, slot 2 regular SIM

LPAC_APDU=gbinder lpac profile list
Attempting to connect to android.hardware.radio@1.0::IRadio/slot1
opened logical channel id: 1
{“type”:“lpa”,“payload”:{“code”:0,“message”:“success”,“data”:[{“iccid”: …

LPAC_APDU=gbinder LPAC_APDU_GBINDER_UIM_SLOT=1 lpac profile list
Attempting to connect to android.hardware.radio@1.0::IRadio/slot1
opened logical channel id: 1
{“type”:“lpa”,“payload”:{“code”:0,“message”:“success”,“data”:[{“iccid”:" …

LPAC_APDU=gbinder LPAC_APDU_GBINDER_UIM_SLOT=2 lpac profile list
Attempting to connect to android.hardware.radio@1.0::IRadio/slot2
Failed to open APDU logical channel: 38
{“type”:“lpa”,“payload”:{“code”:-1,“message”:“euicc_init”,“data”:“”}}

  1. SIM cards swap back - slot 1: regular SIM, slot 2 eSIM
    (stopped showing profiles entirely)

LPAC_APDU=gbinder lpac profile list
Attempting to connect to android.hardware.radio@1.0::IRadio/slot1
Failed to open APDU logical channel: 17
Attempting to connect to android.hardware.radio@1.0::IRadio/slot2
Failed to open APDU logical channel: 38
{“type”:“lpa”,“payload”:{“code”:-1,“message”:“euicc_init”,“data”:“”}}

LPAC_APDU=gbinder LPAC_APDU_GBINDER_UIM_SLOT=1 lpac profile list
Attempting to connect to android.hardware.radio@1.0::IRadio/slot1
Failed to open APDU logical channel: 17
{“type”:“lpa”,“payload”:{“code”:-1,“message”:“euicc_init”,“data”:“”}}

LPAC_APDU=gbinder LPAC_APDU_GBINDER_UIM_SLOT=2 lpac profile list
Attempting to connect to android.hardware.radio@1.0::IRadio/slot2
Failed to open APDU logical channel: 38
{“type”:“lpa”,“payload”:{“code”:-1,“message”:“euicc_init”,“data”:“”}}

A reboot of the phone was required to restore it to state 1.

4 Likes
125

Thank you!

I’ve added functionality to probe for eSIM (and external readers), but I can’t actively expose it in the UI because I can’t expect users to have the modified lpac version installed.
Now all we have to do is wait for upstream LPAC to adopt the changes?
Or do you see any other option for deploying the binary and libraries with SimPro?

126

I uploaded the changes to my fork of lpac and generated a new package pointing to it as upstream while they decide whether to implement it (it seems they want to refactor the gbinder driver Allow selecting SIM slot using environment variable in gbinder driver · Issue #413 · estkme-group/lpac · GitHub ). I have updated it in OpenRepos lpac | OpenRepos.net — Community Repository System.

4 Likes
127

Thank you!
I should now be able to build a settings page that allows selecting the card slot or reader to be used.

I think the following options would make sense:

  • Automatic selection (default): a card in a USB reader is preferred, if none is found, the first available internal card is used
  • Internal slot 1 (if a card is present)
  • Internal slot 2 (if a card is present)
  • External USB reader (if a card is present)

Alternatively, the app could load profiles from all eUICC cards and display them together in a single list, with clear indicators showing where each profile comes from. I’m not entirely sure which approach would be better.

3 Likes
128

Hi guys, just downloaded and installed via storeman. But the app is not present as installed app in the appdrawer. Is this app only CLI now or should be some GUI available?

129

Great! It might be helpful to know which app you have installed, though. :slight_smile:

That also depends if you installed the CLI or the GUI app.
We provide full coverage here, all for your convenience. :grinning:

CLI: lpac
GUI: SimPro

Both on OpenRepos.

4 Likes
130

Aah, thanks for info, it was lpac :smiley:

131

That would explain things :slight_smile:
If you install SimPro you should see an app icon.
The functionality should be exactly the same, because SimPro is basically just a front end to lpac.

4 Likes
132

I’ve added support for external card readers and a way to select a specific internal SIM slot.

6 Likes
133

Thank you! I’ve updated it and it looks great!

1 Like
134

One have to reboot the phone to get a newly selected profile applied?

135

I had to do this every time, so likely, yes. Same with switching physical SIM cards.
Sailfish doesn’t seem to recognise the SIM otherwise.

Maybe the following would work:

devel-su killall ofonod

But I haven’t tried this yet.

1 Like
136

I recall reading somewhere (probably TJC) that the standard requires it - which seems really rather quite archaic. But it would explain why at least some modems are not very happy about hotswapping, which in turn could lead to OS vendors choosing to enforce it (if they ever had an option) rather than deal with a cranky modem.