Cellular Modules

4G, 3G, 2G, and NB-IoT are generations of mobile communication technologies that have evolved over time to meet the increasing demands for data transfer speed, reliability, and connectivity.

4G (Fourth Generation):
- Definition: 4G refers to the fourth generation of mobile telecommunications technology, succeeding 3G. It is characterized by high-speed data transfer, improved network capacity, and better voice communication.
- Function: 4G provides fast internet access, supports high-definition video streaming, online gaming, and mobile applications that require high data rates. It also includes features like VoLTE (Voice over LTE) for high-quality voice calls.
- Application: 4G is used in smartphones, tablets, laptops, and other mobile devices for internet browsing, video calls, social media, and various mobile applications.
- Selection Criteria: When choosing a 4G network, consider factors like coverage, data speeds, cost of service, and device compatibility.

3G (Third Generation):
- Definition: 3G is the third generation of mobile telecommunications technology, offering faster data transfer rates than 2G and improved voice call quality.
- Function: 3G supports mobile internet access, video calls, and multimedia messaging. It is slower than 4G but still provides adequate speed for basic internet usage and voice calls.
- Application: 3G is used in older smartphones, tablets, and mobile broadband devices. It is also a fallback technology when 4G coverage is not available.
- Selection Criteria: For 3G, consider the network's coverage, data plans, and whether the device you are using supports 3G connectivity.

2G (Second Generation):
- Definition: 2G is the second generation of mobile telecommunications technology, primarily designed for digital voice calls and basic data services.
- Function: 2G provides voice calls, text messaging (SMS), and very limited data services. It is the most basic form of mobile communication technology.
- Application: 2G is used in feature phones and older mobile devices that do not require high-speed data services.
- Selection Criteria: If you only need basic voice and text services, 2G might be sufficient. However, it is becoming increasingly obsolete as networks are being upgraded to 3G and 4G.

NB-IoT (Narrowband Internet of Things):
- Definition: NB-IoT is a low-power, wide-area network (LPWAN) technology designed for Internet of Things (IoT) applications, providing long-range connectivity with low data rates.
- Function: NB-IoT is used for IoT devices that require long battery life and infrequent data transmission, such as smart meters, environmental sensors, and asset trackers.
- Application: It is ideal for applications where devices are spread over a wide area and need to send small amounts of data periodically.
- Selection Criteria: For NB-IoT, consider the need for low power consumption, wide coverage, and the ability to support a large number of devices with minimal data requirements.

When choosing between these technologies, consider the specific needs of your application, the coverage and reliability of the network, the capabilities of your devices, and the cost of service. As technology advances, 4G and 5G are becoming the standard for mobile communication, while 2G is being phased out in many regions. NB-IoT is a specialized technology for IoT applications where low power and wide coverage are more important than high data rates.
Please refer to the product rule book for details.