Why Does My Phone Have 2 Sim Cards. Using a dual-SIM setup you can use both a temporary local SIM. When you use a different SIM card on your phone the default settings will now be incorrect.
The first is business people. When you use a different SIM card on your phone the default settings will now be incorrect. Since you have the SIM card in the phone any calls or texts will show your phone number and that it is coming from you.
Youre not locked to a network.
The new Galaxy S20 series can use two SIM microSD card without stacking or stuffing any cards. Popular service providers like ATT T-Mobile and Verizon ship their new phones with a SIM card inserted in your device and have them pre-activated. This option is called Dual SIM Dual Standby DSDS. But during that time this the only way to use both SIM card slots and microSD.
