Second sim in a dual sim iPhone to maintain data connection automatically in poor signal areas - Do you think this will ever be possible in iOS ?

[max2]

I am hoping it will be sooner or later unless it would too much battery/power.

 

[mystery hill]

That’s already possible now.


Using Dual SIM with an eSIM

If you want your iPhone to use cellular data from both plans, depending on coverage and availability, turn on Allow Cellular Data Switching.