MERCUSYS MB235-4G Cat6 4G+ AC1200 Wi-Fi Router

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Product guide

MERCUSYS MB235-4G Cat6 4G+ AC1200 Wi-Fi Router

The MERCUSYS MB235-4G is a Cat6 4G+ router with a SIM slot and dual-band AC1200 Wi-Fi. It is aimed at homes or small offices that want internet through a mobile network, with Ethernet WAN mode also listed for use when 4G is unavailable.

At a glance

SIM-based 4G+ Cat 6 mobile broadband is listed with download speeds up to 300 Mbps.
Dual-band Wi-Fi is specified at up to 300 Mbps on 2.4 GHz and 867 Mbps on 5 GHz.
The listing claims support for up to 64 Wi-Fi devices and four external antennas.
Ethernet WAN mode is offered as an alternative when a 4G connection is unavailable.
App control and EasyMesh compatibility are listed.

Price

£73.99Save 35%

Reference price: ~~£112.99~~

Price checked: 12 Nov 2026

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Pros and cons

Pros

SIM-based connectivity can suit locations without fixed broadband, subject to usable mobile coverage and service.
Wi-Fi 5 dual-band speeds and a stated 64-device capacity suit a connected household or small office.
EasyMesh compatibility gives buyers the option to extend a compatible home network with supported equipment.

Cons

Wi-Fi is specified as 802.11ac, or Wi-Fi 5, rather than a newer Wi-Fi generation.

Technical specifications

22 specifications

Identity
Brand	MERCUSYS
Model	MB235-4G

Connectivity and controls
Wireless connection listed	Wi-Fi, 4G
Wi-Fi standard	802.11ac
Wi-Fi generation	Wi-Fi 5
Band class	Dual-Band
Wi-Fi data transfer rate	867 Megabits Per Second
Maximum upstream transfer rate	300 Megabits Per Second
LAN port bandwidth	1000 Mbps
Number of ports	1
SIM-based connection	4G+ Cat 6 download speeds up to 300 Mbps
Wi-Fi bands and speeds	300 Mbps on the 2.4 GHz band and 867 Mbps on the 5 GHz band
Maximum stated Wi-Fi devices	up to 64 Wi-Fi devices
Antennas	four external antennas
Special features	VPN Encryption, EasyMesh, APP Control
App management	Set up and manage your Wi-Fi through the MERCUSYS app from your smartphone (Android, iOS).
Router mode	Plug an Ethernet cable into the LAN/WAN port for flexible access if you can't get a 4G connection
Mesh compatibility	Works with EasyMesh routers and range extenders to form seamless whole home Mesh WiFi, preventing drops and lag when moving between signals

Other listed details
Security protocol	WPA2-PSK
Operating system	TP-Link Proprietary Firmware
Recommended uses	Home, Small Office, Gaming
Warranty	3 Years Manufacturer

What to know before buying

Listing details to confirm

The listing states Cat 6 4G+ downloads up to 300 Mbps and a maximum upstream rate of 300 Megabits Per Second, but does not clarify how the upstream figure relates to the mobile-network claim. It also lists one port while describing a LAN/WAN port and Gigabit Ethernet. Verify port roles and data-rate details for the exact listing before purchase. The stated 4G performance depends on available mobile coverage and service, and customer feedback reports mixed speed and connection stability.

What’s in the box

Included

4G+ Cat 6 AC1200 wireless dual-band Gigabit router (MB235-4G)
Power adapter
RJ45 Ethernet cable
Quick Installation Guide

Who is it for?

A good fit for

Households or small offices seeking a SIM-based 4G internet connection with dual-band Wi-Fi.
Buyers who want Ethernet WAN mode as a fallback when 4G is unavailable.
Users looking for app management and the option to join a compatible EasyMesh setup.

Less suited to

Buyers who need 5G mobile connectivity or Wi-Fi newer than Wi-Fi 5.
Anyone relying on guaranteed mobile speeds or consistently stable reception regardless of local coverage.

MERCUSYS MB235-4G Cat6 4G+ AC1200 Wi-Fi Router · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.4 / 5 · 9,735 ratings

5 stars74%74%
4 stars10%10%
3 stars5%5%
2 stars3%3%
1 star8%8%

Customer feedback highlights easy setup, out-of-box operation, perceived build quality and signal strength, including reports that placement around the home helped find reception. Speed and connection quality are mixed: some customers describe performance faster than broadband, while others report 6Mbps to 12Mbps or unreliable connections. These experiences matter for a 4G router because actual results depend on local mobile reception, so its listed maximum rates should not be treated as assured speeds.

Positive themes

Customers report straightforward setup and that the router works out of the box.
Some customers appreciate its portability and signal strength.

Negative themes

Some customers report unreliable connections and low speeds.

Mixed feedback

Customer reports of speed and signal quality vary, from faster-than-broadband performance to 6Mbps to 12Mbps.

Frequently asked questions

Does the MB235-4G use a SIM card for internet?

Yes. The listing describes a SIM-slot router using 4G+ Cat 6 mobile broadband. Mobile service and coverage are needed for that connection.

What Wi-Fi speeds are listed?

The listing states up to 300 Mbps on 2.4 GHz and 867 Mbps on 5 GHz. These are stated wireless rates, not a guarantee of internet speed.

Can it connect through Ethernet instead of 4G?

The listing describes a LAN/WAN port for Ethernet router mode when a 4G connection is unavailable. Check the port layout and role before buying, as the details also state a single port.

Does it support mesh networking?

EasyMesh compatibility is listed for use with EasyMesh routers and range extenders. Compatible equipment is needed to create an expanded mesh network.