Problem with dual simcard (sweden)

Note that you can only use one (3G/4G ) data connection at the same time. Check that Halebop is set as preferred SIM for data and that it has the 3G/4G connection. You may need to change the Tele2 SIM to 2G-only mode before the Halebop SIM can be set to 3G/4G.

Shouldn’t matter, as the settings are per SIM rather than per SIM slot.

Did you check out these?:

https://fairphone.zendesk.com/hc/en-us/articles/214620083-I-cannot-place-a-call-Call-not-sent-

https://forum.fairphone.com/t/two-sim-cards-cant-make-receive-calls-when-both-are-turned-on-workaround-wait-5-seconds/12118?u=johannes

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