MERCUSYS MT115 4G LTE Mobile Portable WiFi Router (AX300, up to 10 devices, 2400mAh) — SIM slot MiFi
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Product description
Quick overview
The MERCUSYS MT115 is a portable 4G LTE mobile WiFi router designed for people who want internet on the go without relying on a phone’s hotspot. On paper it combines Wi‑Fi 6 (AX300) for faster local wireless sharing with a built-in SIM slot approach for 4G connectivity, plus an app-based control option and a 2400mAh battery.
It’s the kind of device that makes sense when you regularly need “something that just works” at temporary locations — travel, short stays, small offices, or where broadband access is unreliable. Still, it’s not a magic wand: real performance depends heavily on your 4G signal and on how many devices you keep connected.
Key takeaways
The standout idea is simple: share one 4G connection with up to 10 devices, while keeping an eye on usage and data budget thanks to a screen display. If you’re trying to avoid surprise overages on a monthly plan, having information at a glance is genuinely useful.
What’s also worth noting is the Wi‑Fi 6 angle (AX300). That doesn’t automatically mean it will feel dramatically faster in every situation, but it positions the router closer to modern home wireless capability than older 4G MiFi units. For everyday browsing, streaming on a phone/laptop, messaging, and general light work, it should do the job — assuming the mobile network isn’t struggling.
What you’ll notice day to day
In use, you’re essentially thinking in two parts: the 4G connection and the Wi‑Fi sharing.
A practical micro-scenario: imagine you arrive at a serviced apartment for a weekend. Instead of tethering your phone, you set up the MT115 and connect your laptop, tablet, and a couple of phones. Because it’s built for up to 10 devices, it’s not limited to “just one phone”, and the screen display helps you keep track of what’s happening so you can stay within your data budget.
Where it can feel a bit less convincing is when signal quality is poor. In that situation, the device can’t overcome weak LTE coverage, speeds and stability can drop, and you’ll feel it more when multiple devices are online at once.
Where it shines (and where it may not)
It’s a solid pick if you want: - a portable 4G router for travel or temporary internet setups - Wi‑Fi sharing for several devices (up to 10 simultaneously) - a device with on-screen info that helps manage your monthly data
It may not be the best choice if: - you expect broadband-like reliability everywhere you go — 4G varies a lot by location - you’re planning heavy, continuous high-bandwidth usage for long periods (battery is only one piece of the puzzle) - you prefer something that’s primarily designed for a fixed home broadband replacement rather than mobile deployment
Keep in mind that battery capacity is listed as 2400mAh for up to 10 hours, but “up to” means real runtime will depend on how busy the router is and your signal conditions.
Tech summary
Here are the details provided for the MERCUSYS MT115:
Tech specs
- Name: MERCUSYS MT115
- Type: 4G LTE Mobile Portable WiFi Router / MiFi
- Format: Portable travel router with SIM slot
- Capacity: 2400mAh battery
- Wi‑Fi: Wi‑Fi 6 (AX300), up to 287 Mbps on the 2.4 GHz band
- Device sharing: Up to 10 devices simultaneously
- 4G network support: 4G FDD/TDD-LTE, compatible with the network of most countries and regions
- Download speed (4G): Up to 150 Mbps
- Control & info: App control and intuitive screen display
Buying verdict
If you want a portable 4G LTE WiFi router with Wi‑Fi 6 (AX300) and the ability to share internet with up to 10 devices, the MERCUSYS MT115 looks like a practical, travel-friendly option. The battery and the “stay within your data budget” focus are especially relevant if your plan has a monthly cap and you’d rather monitor usage than guess.
You should look elsewhere if your priority is consistent, high-speed connectivity regardless of location, or if you tend to rely on a mobile connection in areas with weak LTE coverage. In those cases, even the best setup can feel limited.
Worth considering if you’re buying for: - family travel where multiple devices need internet - temporary work setups - anyone who doesn’t want to drain their phone battery by using tethering all day
Not ideal if you need something closer to a fixed broadband replacement and can’t tolerate the variability that comes with 4G.
Mini FAQ
Does it replace my phone hotspot?
It’s designed to share a 4G SIM-based connection over Wi‑Fi, so yes, it can act as a hotspot alternative — especially if you have more than one device to connect.
How many devices can it connect?
It’s described as supporting up to 10 devices simultaneously.
Is Wi‑Fi 6 actually useful here?
On paper it supports Wi‑Fi 6 (AX300) and up to 287 Mbps on the 2.4 GHz band, which should help modern wireless devices behave better than older Wi‑Fi generations — though real speed still depends on conditions.
Will the battery last a full day?
It’s stated as up to 10 hours on the 2400mAh battery, but actual runtime will vary depending on usage and signal.
Does it work in other countries?
The description says it’s compatible with the network of most countries and regions, but it’s still sensible to check your destination’s 4G compatibility before relying on it fully.