How to use 2 SIM cards on Doro 6520
How to use two SIM cards on Doro 6520? Having two SIM cards on your Doro 6520 can be very useful. We will see here how to insert the two cards in your Doro 6520. Then we will see how to activate them, in particular for the use of data. Finally, we will see why having two SIM cards can be …