Cellular Devices

Can a dual SIM phone with eSIM be on two different networks?

Many new smartphones nowadays come with dual-SIM capability and have an eSIM in addition to the physical SIM slot. With the eSIM technology, the SIM hardware (chipset) is already built inside the phone, which you can programme digitally using a QR code from your mobile operator (carrier). An unlocked dual SIM phone can work with …

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What is a dual SIM phone and can you use it with one SIM?

Dual-SIM phones are not new, and nowadays, many eSIM-enabled mobile phones have dual-SIM capability. However, dual-SIM phones are not limited to eSIMs; many dual-SIM phones also work with two physical SIM cards. A dual SIM phone is a mobile phone or smartphone that can work with two SIM cards at the same time. Generally, dual-SIM …

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How to download eSIM on iPhone and Android smartphones?

The SIM technology in mobile phones is evolving, and we are no longer limited to physical SIM cards only. An eSIM or embedded SIM (Subscriber Identity Module) allows customers to download and install a SIM in their phone digitally without physically inserting anything into the phone’s SIM compartment. eSIM capable smartphones, including iPhone and Android …

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Is spatial multiplexing different from spatial diversity?

Spatial multiplexing and spatial diversity are two radio communication techniques used in modern antenna systems in 4G LTE and 5G NR networks. Both these techniques play essential but separate roles in the MIMO (Multiple Input Multiple Output) antenna systems. Spatial diversity is a technique in MIMO that reduces signal fading by sending multiple copies of …

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MIMO in LTE: What is Multiple-Input-Multiple-Output in 4G?

The MIMO antenna technology has been a critical part of 4G LTE (Long Term Evolution) networks. 4G networks have seen multiple enhancements to the MIMO configuration to improve data rates and signal quality. MIMO or Multiple Input Multiple Output is an antenna technology in 4G LTE that uses multiple antenna elements at the transmitter and …

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Frequency Calculator: Calculating frequency of radio waves

Radio Frequency or RF is one of the most fundamental concepts in mobile communications. Our mobile phones communicate with the mobile network using radio waves that are also called RF waves. These radio waves are electromagnetic radiations that travel through the air at specific frequencies. The frequency of a radio wave is calculated by dividing …

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