Thank you for the warm welcome.
The idea was good. Maybe it could be something locked what I could get loose by swapping. Unfortunately, I am still on my private SIM without option to change the mobile data to my company sim.
Setting was enabled on both sim, and no matter which one I disabled the mobile data was not changed.
Now, I disabled both and after enabling one of them the switch over is working.
Looks like the feature was in an undefined state.
Thanks for linking my post to this useful thread. To be clear though I didn’t mean to say it was possible to activate 3g with both simcards simultaneously. As described by @ReofSpa the issue is not being able to switch from one card to another in one click, as before.
However the workaround described above worked for me as well: deactivate mobile data on both SIMs, and then reactivate the data on the preferred sim card only. It just takes so many more steps and is quite counter-intuitive… Some UX designer failed here imho!
Just to expand on yvmuell’s remarks. It seems that on some phones equipped with two SIMs (one of which may be an eSIM), the update to A13 messed up the settings. By disabling both SIMs (not just mobile data), and then rebooting the phone, we have seen that, after then re-enabling the SIMs, switching the choice for data from one to the other then behaves normally, and should not interfere with the choices of default SIM for making calls and sending SMS.
Same problem here. One of my SIM cards is always the preferred option for data, no matter which slot, and the only way I can make data work on my other sim card, (the one I want to use for data) is to completely disable the SIM card that it chooses automatically - not just disable mobile data on it - I have to disable calls and SMS as well.
Almost defeats the purpose of dual sim as somebody said above.
No that doesn’t seem to be the case. I have two SIM cards. Let’s call them A and B.
I want to use A for data, but still receive calls on B and SMS on B.
The phone has decided that B is my preferred SIM for data. If I turn off data on B and keep it on on A, I still have no data. The only thing I can do is completely disable B, and no longer receive calls and SMS on it, and then data on A works.
Had the same problem (Very annoying, I have to reboot my phone daily and one SIM, the one I use with the data mobile created loses and therefore wasnt standard for mobile data any more).
There is no way to choose one SIM with a button to STANDARD.
My trick: SIM A (the one with data mobile) is switched on dataMobile YES. The other SIM B is NO, but is standard SIM for data mobile (I want to change this).
With SIM A: I turn off the data mobile (NO) and turn it on again. The phone ask me, if I’m sure about that. I press OK.
And voilà, SIM A is standard for mobile data.
With SMS/ calls I say: ask me.
Because otherwise I’m searching endlessly, if I want to make a call with the other SIM
I preference with each contact seperatly.