Dual Sim issue

[DannicaSantiago]

Hi,

Does anyone know how to active both sim card at the same time.

For example, sim 1 is used for phone call and text and sim 2 is used for data. I am having issue when I'm having a phone call, my mobile data gets cut off.

How can I make the two of them function at the same time?

Thanks

[Robot-]

I am not sure if it has changed on the z flip phones but used to be able to do it on the S20 Ultra from Sim Manager

[DannicaSantiago]

How do I go about doing this? 

[Robot- · Accepted solution]

Goto settings and the search for sim manager

[Rangers001]

I added payg sim in my s21 yesterday, causing all kimds of problems . Already have contract sim.
Reading this I have an answer, thanks.