Dual Sim Data use

[H_T]

Hi I have a Samsung A40 running Android 10. 

I have been using dual sim for some time now, it works great for calls & texts, however I cant find the setting to allow the phone to use data from both sims depending on which has better signal at the time. Currently I have to manually switch between 4G from different providers but it would be good if the phone would do this automatically. Any help would be great. Thanks

[RXM]

I just have to switch around every now and then manually. I don't think it would be hard to add a switch SIM. function. My understanding of why this happens is that one SIM has to be selected for the 2g/3g networks (so calls and texts) and one for the 4/5g networks (data). Could be wrong but if I can manually switch in 10 seconds then a piece of software could be made, surely?

[RXM]

The way I wrote that souded like I eject my sims and switch them. I don't. I just do it from above the notifications/quick access area.

[karlosslim]

you cant use data from both aims especially if they are different network