GL.iNet Spitz AX GL-X3000 5G Dual-SIM Wi-Fi 6 Cellular Router
Spitz AX suits buyers who need cellular service, Ethernet and Wi-Fi in one configurable router, provided their carrier permits the chosen SIM plan. Treat dual-SIM as backup switching, allow interruptions, and check the official bootloader remediation before relying on the device. It requires external power, and neither the radio label nor its VPN ratings establish the speed at your location.
Updated 2026-10-04
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Conditions and limitations
Dual-SIM failover has an interruption
- Capability
- Switch between two installed cellular SIMs.
- Limitations
- Only one SIM is active; detection and activation take time.
- Requirements
- Activated, carrier-permitted data plans and correct APN settings.
Compatibility
Calyx Sprout BYOD field testing
- Connection
- Installed SIM using the provider's permitted plan and settings.
- Functions
- Internet access in Calyx's multi-location field tests.
- Notes
- Results support that tested pairing; they do not guarantee every plan, location or future carrier policy.
- Protocol
- Cellular
- Result
- partial
- Source device
- Calyx Sprout BYOD SIM
- Target device
- GL-X3000 Spitz AX
Where sources differ
Calyx and teltarif tested different networks and locations. Their qualitative results are not directly comparable; Calyx's inconsistent hardware table was not imported.
Reported issues and fixes
Check the manufacturer's bootloader remediation
- Fixed version
- U-Boot 2025-02-25 19:05:24 plus firmware 4.7.4 per notice
- Status
- confirmed
- Symptom
- Official notice describes startup and U-Boot recovery failures, with a possible service-life impact.
- Workaround
- Follow the official model-specific upgrade instructions; firmware alone does not replace the required bootloader update. Current shipment status is unverified.
Care and support
Issue-specific service commitment
- Details
- The March 2025 notice offers then-current owners an extra warranty year and replacement support for persistent problems after remediation; confirm individual eligibility.
Who it suits
Choose it for a prepared cellular installation
- Check before buying
- Verify local reception, modem variant and bootloader remediation.
- Constraints
- Continuous external power and a permitted SIM plan.
- Needs
- Cellular connectivity with configurable backup paths.
- Reason
- Useful flexibility comes with carrier, power and maintenance requirements.
- Tradeoffs
- SIM switching interrupts connectivity; current unit remediation must be checked.
- Assessment
- conditional
Calyx Institute · GL.iNet · Mobile Internet Resource Center · GL.iNet
Areas not yet researched (1)
No conclusion is available for these areas. This does not mean the Product has no limitations or reported issues.
- Ownership costs
Reviewer consensus
Single-source notes
The review
GL.iNet Spitz AX GL-X3000: flexible cellular routing with setup obligations
What the field tests establish
Calyx tested its Sprout BYOD SIM across locations and days with OONI/M-Lab tools, reporting favorable operation and usability for Spitz AX. In contrast, teltarif's June 2024 indoor o2 test had weak reception: its Spitz AX/M6 Pro group averaged 50–60 Mbps and dipped to 10 Mbps, without a continuous 5G connection. These results describe specific cellular conditions; firmware details were incomplete and neither report establishes your Wi-Fi throughput. [5], [3]
OpenVPN and WireGuard client/server functions and policy routing are documented. The respective 150 Mbps and 300 Mbps figures are manufacturer maxima. Likewise, the below-14 W consumption figure is a specification rather than an independent efficiency measurement. Current-firmware sustained-load, thermal, coverage and multi-client results remain gaps in the accepted evidence. [4]
Understand the wired and wireless paths
The documented 5G configuration combines a Qualcomm X62 modem with dual-band Wi-Fi 6. Manufacturer link-rate ceilings are 574 Mbps and 2402 Mbps for the two bands; these are radio specifications, not measured internet throughput. Six detachable antennas and external DC power make placement and installation part of the purchase decision. [4], [6]
There is a 2.5 Gbps WAN port and a 1 Gbps LAN port, plus USB 2.0 Type-A and microSD/TF. A device on the dedicated LAN connection remains constrained by that port even when the upstream connection is faster. Confirm that this modest wired-port count fits the intended setup. [4]
Dual-SIM backup needs a realistic setup plan
Two SIM slots share single-standby operation. The v4.8–v4.9 guide documents automatic switching, but the router must first detect failure and activate the other SIM. Plan for an interruption rather than assuming a call survives the change. Multi-WAN and load balancing across connection types do not turn the two SIMs into simultaneous carrier bonding. [4], [1]
Use an activated, carrier-permitted data plan and the correct APN, and insert the SIM with power off. Check the exact modem-region variant and power plug before purchase; the ASIN identity alone did not resolve them. The router needs a suitable DC supply and antenna clearance. These requirements favor a prepared home or RV installation over a self-contained pocket hotspot. [7], [4], [1], [6]
Check the bootloader notice before relying on it
GL.iNet's March 26, 2025 notice describes startup and U-Boot recovery failures with a possible service-life impact. It requires both bootloader and firmware remediation; the GL-X3000 section names U-Boot 2025-02-25 19:05:24 and firmware 4.7.4. Follow the linked official model-specific instructions. A firmware update alone does not prove that the bootloader requirement was met, and the evidence does not show that every current shipment is affected. [2]
The notice offers then-current owners an extra warranty year and replacement support if the problem persists after remediation; confirm individual eligibility with GL.iNet. The older OpenWrt baseline in the datasheet is not proof of today's installed firmware. No support-end date, broad security assurance, measured mesh capability or validated parental-control behavior is established by this research. [4], [2]
Buyer questions
Before you buy
Compatibility
Setup
Limitations
Can both SIMs work at the same time?
No. The documented design keeps one SIM active at a time. Automatic switching is available, but failure detection and activation create an interruption. [1]
Care and maintenance
What should I check when buying a used unit?
Ask whether the official GL-X3000 bootloader and firmware remediation has been completed. The manufacturer's notice makes clear that firmware alone is insufficient. Confirm support eligibility and the actual unit's status rather than assuming all stock has the same history. [2]
Product images
Facts and specifications
Manufacturer datasheet
| Specification | Value | Source |
|---|---|---|
| Antenna Count | 6 | [4] |
| Wi-Fi Bands | 2 | [4] |
| Chipset | Qualcomm X62 5G modem in the documented 5G configuration | [4] |
| Ethernet Speed | 1000 Mbps | [4] |
| Form Factor | 155 x 95 x 36 mm body; external antennas add installation clearance | [4] |
| Functions | Configurable Multi-WAN, load balancing and failover between Ethernet, cellular and Wi-Fi repeater connections | [4] |
| Maximum Link Rate | 2402 Mbps; 574 Mbps | [4] |
| Memory Capacity | 488.28125 MB | [4] |
| Operating System | July 2025 datasheet lists OpenWrt 21.02, kernel 5.4; this is a dated software baseline, not the latest firmware claim | [4] |
| Ports | 1 x 2.5G WAN; 1 x 1G LAN; USB 2.0 Type-A; microSD/TF up to 1 TB; 2 x nano-SIM | [4] |
| Power Source | DC5521 5.5 x 2.1 mm; default adapter 12 V/2.5 A; accepted input 9–36 V | [4] |
| Processor | MediaTek MT7981A dual-core at 1.3 GHz | [4] |
| Software | OpenVPN and WireGuard client/server with policy routing; manufacturer maxima 150 Mbps OpenVPN and 300 Mbps WireGuard, not field measurements | [4] |
| Storage Capacity | 8 GB | [4] |
| WAN Speed | 2500 Mbps | [4] |
| Weight | 520 g | [4] |
| Wi-Fi Standard | Wi-Fi 6 / IEEE 802.11ax | [4] |
Manufacturer manual
| Specification | Value | Source |
|---|---|---|
| Warranty | The March 2025 issue notice offers then-current owners a one-year warranty extension and support replacement if the problem persists after remediation; individual eligibility requires manufacturer confirmation | [2] |
Retailer listing
| Specification | Value | Source |
|---|---|---|
| Model | GL-X3000 (Spitz AX) US | [7] |
Stated by reviewers
| Specification | Value | Source |
|---|---|---|
| Power Source | External power required; Spitz AX lacks the internal battery that distinguishes Puli AX | [6] |
Other facts
| Specification | Value | Source |
|---|---|---|
| Buyer Fit | Calyx found Spitz AX worked with its Sprout BYOD SIM and rated its user experience and speed favorably among four devices. Testing used OONI/M-Lab tools over multiple locations and days; location, network conditions and future carrier changes limit transferability. US | [5] |
| Limitation | GL-X3000 uses Dual SIM, Single Standby: two SIMs can be installed, but only one is active at a time. This is not simultaneous two-carrier bonding.; The v4.8–v4.9 manual documents automatic SIM switching, but it is not immediate: failure detection and activation of the other SIM take time. Uninterrupted calls or instant failover are not established. | [1] |
| Risk | GL.iNet's March 26, 2025 notice describes startup/U-Boot recovery failures and a possible service-life impact. It requires both bootloader and firmware remediation; the GL-X3000 section names U-Boot 2025-02-25 19:05:24 and firmware 4.7.4. It does not establish that every current shipment is affected. | [2] |
| Setup Requirement | Manufacturer operating range is 0–40 °C; use an appropriate external DC supply and allow space for six detachable antennas.; Use an activated SIM with a valid data plan, verify the carrier's restrictions and required APN, and insert the SIM with the router powered off. Supported radio bands alone do not establish plan eligibility. | [4], [1] |
KnowSpec analysis
A configurable cellular gateway for a powered installation
Spitz AX suits buyers who need cellular service, Ethernet and Wi-Fi in one configurable router, provided their carrier permits the chosen SIM plan. Treat dual-SIM as backup switching, allow interruptions, and check the official bootloader remediation before relying on the device. It requires external power, and neither the radio label nor its VPN ratings establish the speed at your location.
Method: Synthesis of accepted manufacturer documentation and qualified original field tests.Field conditions matter more than the headline rate
Calyx's favorable multi-location experience and teltarif's weak-signal result concern different networks and methods. They justify testing the intended carrier at the installation site, not a universal speed promise. Accepted evidence lacks reproducible current-firmware Wi-Fi, sustained-load and VPN benchmarks.
Method: Compare the scope of accepted field reports; preserve recorded evidence gaps.Visible information gaps
Missing information is shown rather than guessed.
- Coverage Areanot found
- Security Protocolnot found
- Topic:Multi Client Capacitynot found
- Topic:Thermals And Reliabilitynot found
- Topic:Sustained Performancenot found
- Optionnot found
- Topic:Real World Throughputnot found
- Topic:App Parental Controlsnot found
- Mesh Supportnot found
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Sources and method
- Connect to the Internet via cellular (v4.8-v4.9)GL.iNet · retrieved 2026-10-04Manual
- Critical Problem Notification for GL-MT2500/GL-X3000/GL-XE3000GL.iNet · retrieved 2026-10-04Manufacturer support
- Lohnt sich der Aufpreis für 5G-Premium-Router?teltarif.de · retrieved 2026-10-04Editorial review
- GL-X3000 datasheet, revision 20250704GL.iNet · retrieved 2026-10-04DatasheetPDF
- Insights: Networking hardware test results with the Calyx Sprout (BYOD) SIM cardsCalyx Institute · retrieved 2026-10-04Lab review
- Review: Spitz AX and Puli AX by GL.iNet (Mobile Router)Mobile Internet Resource Center · retrieved 2026-10-04Editorial review
- GL.iNet GL X3000 Manuals, Certifications & SpecsDevice.report · retrieved 2026-10-04Other source