Samsung officially unveils its first 5G modem with two-way satellite connectivity

Exynos 5400 is a 4nm 5G modem with support for NTN networks and up to 14.79Gbps download speeds

The Exynos 5400 is Samsung's first modem with built-in NB-IoT NTN and NR NTN network support. This feature allows phones and tablets using this modem to have two-way satellite connectivity for messaging, even when there's no cellular network nearby. Based on this feature, phones can have the Emergency SOS feature. It supports both mmWave and sub-6GHz 5G networks. It supports 4×4 MIMO in sub-6GHz and 2×2 MIMO in mmWave 5G networks.

It is also the fastest-ever Exynos modem, reaching download speeds of up to 14.79Gbps, thanks to support NR dual-connectivity for FR1 and FR2 bandwidths (3GPP Release 17). It is claimed to be a first-of-its-kind solution that can aggregate five carriers (3x 100MHz + 2x 40MHz) for a total theoretical download speed of up to 11.2Gbps with 1,024 QAM on just the FR1 frequency band. Using FR1 is said to be more efficient and reliable than using the FR2 frequency band.

Samsung claims the Exynos 5400 is the most power-efficient 5G modem, as it is made using Samsung Foundry's 4nm EUV process. While the Galaxy S24 and the Galaxy S24+ likely use this modem, Samsung hasn't used its NTN connectivity features in those phones, as they lack two-way satellite connectivity for Emergency SOS and text messaging without a cellular network.

You can watch our in-depth review of the Galaxy S24 in the video below. Click the link below to buy the Galaxy S24.

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