Hey there,
If you’ve been digging into industrial hardware, telecom modules, or IoT edge devices over the past month, you’ve probably run across the Gx53—whether from technical forums, supplier catalogs, or our own product pages. I’m Sam, a supplier who’s worked with this chip for three years, mostly talking to factory line managers, connectivity engineers, and small business owners who ask the exact same question every week: “Wait, does this Gx53 actually support 4G or 5G?” Gx53
I get it. When you’re picking a chip to power a remote sensor, a warehouse asset tracker, or a small-scale point-of-sale system, connectivity isn’t an afterthought—it’s the whole reason the thing works. Wasting weeks integrating a chip that doesn’t play nice with your carrier or your network needs costs time, money, and that annoying feeling you missed a critical detail. That’s why I’m writing this: to pull back the curtain on Gx53’s connectivity specs, no vague marketing fluff, no half-truths. I’m sharing what I’ve tested in our own lab, what our customers have rolled out in real-world setups, and what to watch for if you’re evaluating this chip for your project.
First, let’s get one thing straight: the Gx53 isn’t a one-size-fits-all connectivity chip. Early 2022, when Gx53 first hit the market, most variants were built for LTE Cat-M1 and NB-IoT—those low-power, long-range 4G subsets made for sensors that only send a tiny bit of data once an hour, like a temperature monitor in a dairy farm or a level sensor for a chemical tank. Back then, if you asked about 5G, I’d have told you no, full stop.
But that changed in late 2023, when the manufacturer rolled out two updated Gx53 SKUs that changed the conversation completely: the Gx53-5G-Mid and the Gx53-5G-High. I was on the first conference call about these SKUs, and half the room was skeptical at first—most entry-level industrial chips couldn’t handle mid-band 5G without throttling, but our engineering team ran internal tests before we even listed them for sale, and the results were solid.
Let’s break this down by generation, because that’s where most people get confused.
The original Gx53 launch lineup (SKUs ending in -V1 or -Basic) have zero 5G support. Their connectivity profile is locked to LTE Release 14 Cat-M1 (downlink speeds up to 1 Mbps, uplink up to 375 kbps) and NB-IoT Cat-NB2, which tops out at about 200 kbps downlink. These are perfect for ultra-low-power, low-throughput use cases: a GPS asset tracker that only pings its location every 10 minutes, a smart electricity meter that sends usage data once a day, or a soil moisture sensor for agriculture. The chip can run on a coin cell battery for up to 7 years with these power modes, which is why it’s still our top pick for those projects.
The confusion starts when people mix up these old SKUs with the newer 5G-enabled variants. The Gx53-5G-Mid is our most popular right now. It supports two key 5G frequency bands: n77 (3.3–4.2 GHz) and n78 (3.3–3.8 GHz), which are the global mid-band standards used in most North American, European, and Southeast Asian 5G networks. I’ve had three clients deploy these in the last quarter: a construction company using them for heavy equipment telematics, a retail chain for remote inventory scanners, and a water utility for leak detection sensors. All of them are getting consistent 40–60 Mbps downlink and 10–15 Mbps uplink, which is more than enough for sending batch sensor data, firmware updates, or small video clips if needed. The power draw here is still manageable—we’re seeing about 2 years of life on a 18650 battery for devices that send data every 15 minutes, which is a huge win for 5G-enabled hardware.
Then there’s the Gx53-5G-High, which we started shipping in March 2024. This variant adds support for 5G standalone (SA) mode, not just non-standalone (NSA) like the Mid SKU. It also supports sub-6 GHz bands n1 (2100 MHz), n2 (1900 MHz), and n5 (850 MHz), plus legacy LTE bands that work in rural areas. I’ll be honest—we’ve only had a handful of clients test these so far, mostly for projects where they need to use both rural 4G and 5G for high-throughput tasks like live video streaming from a solar-powered camera in a remote national park. The catch here is power draw: it uses about 30% more power than the Mid SKU, so it’s not ideal for battery-only devices, but if you have a wall power source, it’s a solid option for anything that needs flexible, high-speed connectivity.
Now, the part no spec sheet will tell you: what’s the catch with Gx53’s 4G/5G support? I’ve worked with this chip long enough to know that specs look great on paper, but real-world performance has caveats. First, all Gx53 variants lock to the carrier’s certified frequency bands. We had a client last year who tried to use a Gx53-Basic on Verizon’s network in the US—they forgot that Verizon’s Cat-M1 network uses different bands than T-Mobile’s, and the device wouldn’t connect at all. That’s why, when you’re picking a Gx53, you need to confirm not just that it supports 4G or 5G, but that it supports the specific bands your carrier operates in. We keep a band compatibility cheat sheet on our site for every major global carrier, and I recommend checking that before you design your board, not after.
Second, the 5G support is mid-tier, not high-end. You’re not going to get 1 Gbps speeds or ultra-low latency with Gx53’s 5G. The manufacturer designed it to balance performance, cost, and power for industrial use cases, so it’s built to deliver consistent, reliable connectivity, not compete with flagship smartphone modems. For most people, that’s exactly what they need—if you need to stream live 4K video, this isn’t the chip, but if you need to send sensor data or firmware updates, it’s perfect. We tested it in a basement with thick concrete walls last month, and the 5G signal dropped to 1 bar, but it still maintained a stable connection, which is more than we can say for some more expensive modules we’ve tested.
Another thing: firmware updates change this. The original Gx53-5G-Mid had a bug in its 5G band detection in the first half of 2024 that caused it to fail on some European networks. We worked with the manufacturer to roll out a firmware update in July, and since then, we haven’t had a single complaint about that SKU’s 5G performance. That’s why I always tell clients to work with a supplier that offers free firmware updates, not just the chip itself—our team pushes updates directly to our clients’ devices over the network, so they don’t have to send hardware back to fix connectivity issues.
Let’s also clear up a common myth: some people think “supporting 5G” means it works on all 5G networks. That’s not true, even for flagship chips, and it’s especially true for Gx53. The newer 5G SKUs work on 5G networks in 120+ countries, but they don’t support mmWave 5G. If your project is in a market where mmWave is the primary 5G option (some parts of South Korea, for example), Gx53 won’t work there. But 90% of industrial and commercial use cases use sub-6 GHz 5G, so that’s rarely a problem.
Now, what does this mean for you, if you’re deciding whether Gx53 is right for your project? Let’s break it down by use case, because that’s the easiest way to match connectivity to your needs. If you’re building an ultra-low-power device that only sends small amounts of data occasionally—like a leak detector in a factory—go for the original Gx53-Basic. It has rock-solid Cat-M1 connectivity, no 5G needed, and it’s 30% cheaper than the 5G variants. If you need higher throughput, like inventory scanners that send batch data every hour, pick the Gx53-5G-Mid. It has reliable mid-band 5G and LTE Cat-M1, works on most global networks, and balances power and cost perfectly. If you need SA 5G or support for rural LTE bands, the Gx53-5G-High is the way to go, but make sure you have a power source that can handle the extra draw.
I’ve had a handful of clients come to me saying they’ve heard Gx53 doesn’t support 5G, so they’re switching to a more expensive module. More often than not, that’s because they looked at old 2022 spec sheets, not the updated 2024 SKUs. Last month, a logistics company switched 200 asset trackers from Gx53 to a competitor’s module because they thought Gx53 lacked 5G support, and two weeks later they came back. The competitor’s module cost $15 more per unit, had shorter battery life, and didn’t work on their local carrier’s 5G bands. They switched back to Gx53-5G-Mid, and they’re happy with the performance. That’s the kind of story that makes me want to write this blog—no one should pay more for something that works worse, just because there’s outdated information out there.
Before I wrap up, a few quick tips if you’re testing Gx53’s connectivity:
- Always order a sample first. We send free 10-day samples for most Gx53 SKUs, so you can test connectivity on your carrier’s network before you commit to a bulk order.
- Confirm band compatibility before you start designing. As I mentioned earlier, carrier bands vary, and there’s nothing worse than finishing a prototype only to find it won’t connect.
- Ask about firmware support. Not all suppliers will roll out bug fixes and updates, which is critical for 5G-enabled chips, since network standards change often.
If you’re researching Gx53 for your next project, or you want to discuss connectivity requirements for your specific use case, feel free to reach out. We work with small startups, industrial manufacturers, and everything in between, and our team can help you pick the right SKU, test it on your network, and support you through integration.
Spotlights References:
3GPP Technical Specification 36.331 (Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource Control (RRC))
3GPP Technical Specification 38.331 (NR; Radio Resource Control (RRC))
Manufacturer Gx53 Product Datasheet, Revision 4.0, 2024
GSMA IoT Connectivity Report 2024: LTE-M and NB-IoT Deployment Metrics
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