Samsung Modem & RF, Exynos Modem 5123


Exynos Modem 5123
Unleashing the ultimate 5G performance
The arrival of 5G is set to transform mobile communications. Powered by Samsung’s cutting-edge innovations, Exynos Modem 5123 delivers unrivaled performance to unlock the power of ultra-fast connectivity. In 5G, the modem supports mmWave and sub-6GHz spectrums, as well as NSA and SA networks. With up to 8-carrier aggregation (8CA), it provides downlink speed of up to 7.35-gigabits per second (Gbps) in mmWave and 5.1Gbps in sub-6-gigahertz (GHz). Together with enhanced power efficiency enabled by the 7-nanometer (nm) extreme ultraviolet (EUV) process and support of 5G and virtually all legacy networks, Exynos Modem 5123 sets a new standard for high-speed, high-volume 5G connectivity.
A visionary image of Exynos Modem 5123 against an image of 5G smartphone with cityscape on its display.

Built for 5G

Connectivity for future technologies

With improved data transfer rates, ultra-low latency,
and enhanced network capacity, 5G provides the critical foundation for X2X services while catalyzing new forms of technologies, including self-driving cars, cloud gaming, advanced AR and VR applications, and more. With peak downlink speed of up to 7.35Gbps in mmWave and 5.1Gbps in sub-6GHz, Exynos Modem 5123 enables devices to deliver new 5G-powered user experiences.
The modem also supports EN-DC, which utilizes both 4G and 5G signals to enhance connectivity.

* Images are simulated for illustration purposes only.

The depicted device is a fictitious creation. No simulation of any real product is intended.

* Images are simulated for illustration purposes only.

The depicted device is a fictitious creation. No simulation of any real product is intended.

An illustrative image of Exynos Modem 5123 with the smartphone against an image of fast moving light streaks.

Enhanced throughput

Unrivaled data
transfer speed

Packed with industry-leading 5G features, Exynos Modem 5123 empowers mobile devices to connect with broader network bandwidth for enhanced data throughput. The modem supports up to 256-QAM in mmWave and sub-6GHz for both uplink and downlink throughput to ensure fast yet efficient data transmission. With 8CA and 4X4 MIMO (Multiple Input Multiple Output) support, which utilizes multiple smart transmitters and receivers to increase performance and range, Exynos Modem 5123 maximizes network resources, ensuring that mobile devices can transfer data seamlessly for stable and reliable user experiences.

* The depicted device is a fictitious creation. No simulation of any real product is intended.

An illustrative image of Exynos Modem 5123's dual-mode 5G feature that supports both SA and NSA networks.

Dual-mode 5G for SA/NSA

Ready for the next phase of 5G

5G networks are fast expanding as service providers are beginning to deploy standalone networks for faster, more reliable connections. Unlike non-standalone networks (NSA), which utilize existing 4G infrastructure along with 5G connectivity, standalone (SA) networks are built from the ground up for 5G to power the full deployment of smart, connected services. Exynos Modem 5123 supports both SA and NSA networks to deliver not just faster data transfer speeds but all the benefits of 5G connectivity.



An illustrative image of wide range of legacy networks, including 2G, 3G, 4G, and 5G.

Multi-mode modem

Multiple modes in a single chip

In addition to 5G, Exynos Modem 5123 supports a wide range of legacy networks, including 2G (GSM, CDMA), 3G (WCDMA, TD-SCDMA, HSPA), and 4G (LTE-FDD, LTE-TDD). Support for legacy networks all come in a single chip, meaning there is no need for additional modems and adds flexibility to device designs. In LTE mode, the modem provides enhanced speed and features, delivering downlink speed of up to 3.0Gbps via 8CA and supports up to 1024-QAM. By offering multi-network support, the Exynos Modem 5123 promises to bring seamless connectivity to everyone.

An illustrative image of light beam falls down on Exynos Modem 5123 with power efficiency symbol.

Enhanced power efficiency

Stay connected for longer

Manufactured with Samsung’s cutting-edge 7nm EUV process, Exynos Modem 5123 provides enhanced performance with lower power consumption. EUV technology creates finer circuits and denser patterns with extreme ultraviolet lithography, enabling the modem to integrate more components inside the chip for faster, more energy-efficient performance. The result is a 30 percent improvement on average in power efficiency compared to its predecessor. In the era of 5G, where more services and applications will require always-on connectivity, Exynos Modem 5123 ensures mobile devices to stay connected around the clock and maintain peak performance with longer battery life.

  • 5G NR

    Sub-6GHz, mmWave
  • Supported Modes

  • Downlink Features

    8CA in 5G & LTE
    4x4 MIMO, FD-MIMO
    Up to 256-QAM in sub-6GHz
    Up to 64-QAM in mmWave
    Up to 1024-QAM in LTE
  • Process

    7nm EUV Process

Based on Samsung’s internal test results. Actual speed may vary depending on device and user environment.


Based on Samsung’s internal test results compared to the Exynos Modem 5100.

All functionality, features, specifications and other product information provided in this document including, but not limited to, the benefits, components, performance, availability, and capabilities of the product are subject to change without notice or obligation.