The Harman Spark, an AT&T “Connected Car” device, once offered a unique approach to in-vehicle Wi-Fi by plugging directly into a vehicle’s OBD-II diagnostic port. This innovative device aimed to transform cars into mobile hotspots, providing internet access and telematics services. Let’s delve into the features, functionality, and ultimately, the relevance of OBD2 hotspots like the AT&T Spark in today’s connected world.
The core concept of the Harman Spark was simple yet effective: leverage the OBD-II port, standard in most vehicles since 1996, to power a Wi-Fi hotspot that activates automatically when the car is turned on. This eliminated the need for separate power sources and offered a seamless experience for drivers wanting to connect up to 8 devices to the internet while on the go. Beyond just Wi-Fi, the Spark also provided telematics capabilities, including emergency assistance, fleet management tools, vehicle tracking, and theft monitoring. It was designed as an aftermarket solution for vehicles lacking built-in connected car systems like OnStar.
While the idea of an OBD2 hotspot was intriguing, the AT&T Spark faced limitations. Initially, AT&T offered various data plans for the Spark, starting from basic plans without Wi-Fi to data-inclusive options like 5GB and 10GB monthly allowances. There was even a short-lived unlimited data plan. These plans could be standalone or added to existing AT&T Unlimited and Mobile Share plans, with a $10 access fee for connected car devices on shared data plans.
However, unlike the earlier AT&T Mobley connected car device, the Spark came with stricter terms of service. AT&T explicitly restricted its use to vehicles and reserved the right to terminate accounts used outside of a car. Furthermore, the Spark’s Wi-Fi hotspot feature was designed to deactivate after 30 minutes of inactivity, meaning the vehicle had to be in motion to maintain a continuous connection.
It’s also important to note that there were two versions of the Harman Spark. The later version, model number HAS-15UA-BR, included support for AT&T’s Band 14 (FirstNet), offering potentially improved coverage in certain areas. The original version was model HSA-15UA-AA.
AT&T Spark Specifications: A Closer Look
While the AT&T Spark is no longer available for purchase, understanding its specifications provides insight into the capabilities of OBD2 hotspots in general.
- Model Numbers: Harman HSA-15UA-AA, Harman HAS-15UA-BR (Band 14 version)
- Connected Devices: Up to 8 devices via Wi-Fi
- Management: Controlled via Harman Spark mobile app
- Tethering: No USB tethering support
- Network Bands: 4G/LTE Bands 2, 4, 5, 12, 17 (plus Band 14 on newer model)
- Carrier Aggregation: No LTE-Advanced Carrier Aggregation
- MIMO: 2×2 Internal MIMO
- LTE Category: Cat 4 (150 Mbps Down / 50 Mbps Up theoretical max speed)
- Antenna Ports: None
- Ports: OBD-II
- Wi-Fi: Wi-Fi 4 (802.11n) – 2.4 GHz
- Battery: None – powered by the vehicle’s OBD-II port
- Dimensions: 2.95″ x 2.06″ x 1.13″
- SIM Card: Micro SIM
- Original Retail Price: $99.99
Why Consider Alternatives to OBD2 Hotspots Like AT&T Spark?
The AT&T Spark, while innovative, is now considered discontinued or obsolete. This is an important point to consider when exploring OBD2 hotspots. Technology evolves rapidly, and dedicated mobile hotspots have advanced significantly since the Spark’s release. Several factors contribute to the shift away from OBD2-specific hotspots:
- Device Obsolescence: As seen with the Harman Spark, these devices can become outdated quickly. Cellular technology, Wi-Fi standards, and user needs evolve, making older devices less competitive.
- Power Dependency: OBD2 hotspots rely on the vehicle’s battery. While convenient, continuous use when the car is off can drain the battery, and some vehicles might cut power to the OBD-II port when the ignition is off.
- Feature Limitations: OBD2 hotspots are primarily focused on basic connectivity and telematics. Dedicated mobile hotspots often offer more advanced features, better performance, and greater flexibility.
- Plan Restrictions: As highlighted with the Spark, carriers may impose specific terms and restrictions on data plans for connected car devices, limiting their versatility.
Given these factors, exploring alternative mobile hotspot solutions is often a more practical approach for reliable in-vehicle internet access.
Exploring Mobile Hotspot Alternatives
For those seeking robust and versatile mobile internet solutions for vehicles, dedicated mobile hotspots present a compelling alternative to OBD2 devices like the AT&T Spark. Modern mobile hotspots offer numerous advantages:
- Portability and Versatility: Unlike OBD2 hotspots tied to a specific vehicle, dedicated hotspots are portable and can be used in various situations – in a car, RV, home, or while traveling.
- Battery Powered Operation: Most mobile hotspots have their own batteries, allowing for internet access even when the vehicle is off. This eliminates concerns about draining the car battery and provides more flexibility in usage.
- Advanced Features and Performance: Current mobile hotspots boast faster cellular speeds (including 5G), support for more devices, enhanced Wi-Fi capabilities, and advanced features like guest networks and security settings.
- Wider Carrier Compatibility: Dedicated hotspots are available for all major carriers, offering more plan choices and flexibility.
Here are some popular categories and examples of mobile hotspots that serve as excellent alternatives to OBD2 solutions:
High-Performance 5G Mobile Hotspots
Devices like the Netgear Nighthawk M7 Pro represent the cutting edge of mobile hotspot technology. They offer blazing-fast 5G speeds, support for Wi-Fi 6 or 6E, and robust features for demanding users. These hotspots are ideal for users who need the best possible performance and are willing to invest in premium devices.
Mid-Range 5G Hotspots
For a balance of performance and affordability, mid-range 5G hotspots like the Orbic Speed 5G offer a solid option. They provide fast 5G speeds for most users, along with essential features and reliable performance, at a more accessible price point.
Versatile 4G LTE Hotspots
While 5G is becoming more prevalent, 4G LTE hotspots remain relevant and cost-effective. Devices like the Netgear Nighthawk M6 series offer excellent 4G LTE performance, reliable Wi-Fi, and a range of features suitable for everyday mobile internet needs.
Budget-Friendly Options
For users seeking basic connectivity without breaking the bank, budget-friendly hotspots like the Franklin RG2100 Series provide a viable solution. These hotspots focus on essential functionality and affordability, making them suitable for light internet usage on the go.
Rugged and Feature-Rich Hotspots
Some users require hotspots built for demanding environments or with specialized features. The Inseego MiFi X Pro 5G series, for example, offers ruggedized designs, advanced security features, and extended battery life, catering to professionals and outdoor enthusiasts.
Compact and Simple Hotspots
For users prioritizing portability and ease of use, compact hotspots like the TCL Linkzone 5G UW are excellent choices. These devices are small, lightweight, and simple to operate, making them ideal for basic on-the-go connectivity.
Conclusion: The Evolving Landscape of Car Connectivity
While the AT&T Spark and the concept of an OBD2 hotspot offered an early vision of connected cars, the technology has moved towards more versatile and powerful solutions. Dedicated mobile hotspots, with their portability, advanced features, and wider compatibility, have become the preferred choice for in-vehicle internet access. As cellular technology continues to advance, exploring modern mobile hotspot options will likely provide a more future-proof and satisfying solution for staying connected on the road. Although the AT&T Spark is a piece of mobile internet history, its exploration helps understand the evolution and current best practices in creating a connected car experience.
