FIG. 14 illustrates exemplary usage of two or more subscriber identity modules (SIMs) in order to achieve cost effective global coverage using minimum number of product SKUs in accordance with one or more embodiments. In this example, a multiplexer 1404 is connected to two or more SIM cards inside the device 1402. Each SIM card (1406, 1408, or 1410) can be of a different form factor: 2FF, 3FF, 4FF, or embedded SIM card. In one embodiment, one SIM card 1406 is a micro SIM card (3FF) and the other one is an embedded SIM card 1408. The embedded SIM card 1408 can be used during manufacturing and is assigned to a particular Network Carrier or a Mobile Virtual Network Operator (MVNO) or a carrier that gets optimal coverage at great cost in a few key countries around the globe. However, there are countries in the world where the optimal coverage is not available and roaming charges are very high. For instance, in Kosovo (a country in Europe) the US+EU28 cell plan which covers USA and the 28 countries in EU goes into roaming charges. The roaming rates are high and are not economical to work with the already assembled embedded SIM card 1408. In this case, a second micro (3FF) SIM card can be utilized for a specific network carrier in countries where the embedded SIM would go into roaming. The microcontroller or processor of the device can be configured to determine which SIM card to utilize based on GPS/GNSS location, cellular signal availability, and/or lowest data rate costs at that location.