Uplink (UL or U/L for short) and downlink (DL or D/L for short) are two basic terminologies used in mobile communications. These are two communication links that allow the mobile phone and the mobile network to communicate with each other. Uplink is the communication link that transmits the signal from the mobile phone to the […]
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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
Can a dual SIM phone with eSIM be on two different networks? Read More »
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
What is a dual SIM phone and can you use it with one SIM? Read More »
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
How to download eSIM on iPhone and Android smartphones? Read More »
In high-tech industries like mobile communications and wider telecoms, engineering and product management work closely with each other. However, there are times, especially when the teams are involved in detailed solution discussions, the boundaries between product management and engineering can be hard to define clearly. This can be encouraging for you if you currently work
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Finding your first job after completing your engineering degree can be challenging. In mobile communications or any other industry, if you don’t already have a network of people, things can potentially take a little longer for you. But there is absolutely nothing to worry about because many of us go through the same journey when
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Starting your degree programme is a big step irrespective of which field you are in, and it is easy to think that you are already on track for success because you have started your degree. When pursuing a degree in wider telecoms or wireless communications, your thesis topic can play a crucial role in giving
How to select a thesis topic in wireless communications Read More »
Today, mobile networks are not limited to just mobile phones for consumers and businesses, but they also provide connectivity for machine-to-machine (M2M) and Internet of Things (IoT) devices. IoT, or the Internet of Things, has been around for a long time, and it is a system of devices connected to the internet to communicate with
Cellular IoT (CIoT) – Mobile IoT using NB-IoT and LTE-M Read More »
FDD and TDD are two fundamental concepts in mobile communications and other telecom systems. Together they represent the duplexing schemes in mobile networks that deal with two-way communication. FDD (Frequency Division Duplex) is a technique in mobile networks that uses separate frequency bands for uplink and downlink communication; TDD (Time Division Duplex) is a technique
FDD vs TDD: What are FDD and TDD in mobile networks? Read More »
IMS or IP Multimedia Subsystem is a network architecture used in modern wireless networks, including 4G and 5G, to enable rich communication services. IMS is used in both 4G LTE (Long Term Evolution) and 5G NR (New Radio) networks for IP-based voice calls and SMS services. IMS (IP Multimedia Subsystem) is needed in 5G NR
Voice over 5G (Vo5G): Why is IMS used in 5G networks? Read More »
