Dual sim keeps changing.

[Members_BAhDatX]

I have a dual sim,  one for private which is my default sim and one for work which is my secondary sim. My samsung s23 fe keeps changing my sims over without telling me. Which means I'm using all my work data as its not my default sim. 

I've tried re booting and software updates but having no luck.

Any ideas why this happening please??

Many thanks. 

[AndrewL]

@Members_BAhDatX: Please try heading to Settings > Connections > SIM manager > Preferred SIMs > Mobile data > Assign your private SIM > Data switching > Toggle this off.

Let me know if this helps.