GL-X750V2 (Spitz) 4G LTE VPN Router - Reliable RV & Offshore Backup

In this review the GL-X750V2 (Spitz) is evaluated as a compact, configurable 4G LTE router aimed at remote and mobile use where wired broadband is unavailable. The biggest reason to buy is its combination of an AT&T/ T-Mobile compatible cellular modem, preinstalled OpenWrt and VPN clients, which together deliver a private, flexible internet backup for an RV, boat, small office or IoT gateway. Setup is straightforward and the device focuses on security and programmability rather than consumer mesh features.

Key Features

• AT&T/ T-Mobile compatible cellular: The EC25-AFFA CAT4 module provides carrier-certified connectivity suitable for North America and improved rural coverage compared with the original Spitz.
• Dual-band Wi-Fi: Converts 4G LTE into concurrent 2.4 GHz (up to 300 Mbps) and 5 GHz (up to 433 Mbps) networks for phones, laptops and streaming devices.
• Preinstalled VPNs: OpenVPN and WireGuard come ready to use, increasing privacy and enabling secure remote access without extra router flashing.
• OpenWrt and expandability: The unlocked OpenWrt platform and software repository allow customization, package installs and scripting for IoT use cases.
• Local storage and ports: A microSD slot supports up to 128 GB for logging or local file storage, and a USB 2.0 port allows simple peripheral expansion.
• Rugged connectivity options: Two SMA antenna connectors and dual 10/100 Ethernet ports give flexibility for external antennas and wired devices.

Who It's For

The GL-X750V2 is best for hobbyists, small fleet or RV owners and offshore users who need a secure, configurable cellular backup with built-in VPN and OpenWrt. It suits anyone who values programmability and privacy and who can accept moderate LTE speeds typical of a CAT4 modem.

Those who should look elsewhere include heavy streamers or households needing very wide Wi-Fi range or gigabit LAN performance, since the unit is optimized for reliability and flexibility rather than maximum throughput or home mesh coverage.

Pros & Cons

Pros

• AT&T certified EC25-AFFA modem improves coverage and allows AT&T IoT data plan compatibility.
• OpenWrt with OpenVPN and WireGuard preinstalled delivers strong privacy and customization options.
• Good value for money with microSD, USB port and dual Ethernet for multi-purpose use.
• Designed for rural and mobile scenarios where cellular backup matters more than peak Wi-Fi speed.

Cons

• Average cellular throughput (typical 15-20 Mbps) may be slower than modern LTE-A or 5G modems for some users.
• Wi-Fi range and occasional connection variability reported by some users; external antenna positioning may be required.

Specifications

Model	GL-X750V2 (Spitz)
Cellular module	Quectel EC25-AFFA CAT4
Wi-Fi	Dual-band up to 300 Mbps (2.4 GHz) + 433 Mbps (5 GHz)
Memory & storage	128 MB RAM, 16 MB NOR Flash, microSD slot up to 128 GB
Ports	USB 2.0, dual 10/100 Ethernet ports, micro SIM slot
Antennas	Two SMA connectors, optimized external antennas
Software	OpenWrt/LEDE preinstalled with OpenVPN & WireGuard

Our Verdict

The GL-X750V2 is a practical, affordable cellular VPN router for users who need a secure, configurable internet backup in RV, marine or rural deployments. It is especially strong for those who want OpenWrt flexibility and built-in VPNs; just expect modest LTE speeds and plan antenna placement if range is critical.

Frequently Asked Questions

Is this router carrier certified?
Yes, the GL-X750V2 ships with the EC25-AFFA module and is certified for AT&T IoT data plans and works with T-Mobile networks in North America.

Can I run a VPN service on the router?
Yes, OpenVPN and WireGuard are preinstalled and compatible with many third-party VPN providers for secure connections.

Can I use external storage or expand functionality?
Yes, the device supports microSD cards up to 128 GB and has a USB 2.0 port plus OpenWrt for installing additional packages and custom scripts.