4 SIMs Magma Phone Concept

I’m sure everybody has already heard about Dual SIM phones, as they are very fashionable at the moment. The fundamental characteristic of such a device is that it integrates two Subscriber Identity Modules (SIMs). When dual-SIM adapters are available, they allow cellphones to contain two SIMs and to switch from one to the other as requires. Some other phones are designed to work with both SIMs,