Preferred SIM for dual Sim phone

[cbcemi]

Hi,

For dual sim, we have the option of preferred SIM option. Will the phone still switch to the non preferred network if we deselect the data switching and backup calling option? I do not want the auto data switching when I am on roaming mode.

Regards 

[S23E]

Nope.. it wont! As long as u set which sim slot is designated for data and or calls..