A Guide to Vehicle SIM Cards: Boosting Connected Car’s and a Fleet’s Critical Connectivity

A vehicle or automotive SIM card is a Subscriber Identity Module (SIM) specifically designed for use in vehicles. A small chip that allows your car to connect to the internet, enabling it to communicate with various mobile networks and therefore in-vehicle, user smartphone or fleet applications. It functions similarly to the regular SIM card in a smartphone but provides cellular connectivity for your car or vehicle at scale. This connection enables a range of key and important features, from real-time traffic updates and emergency assistance to connecting infotainment services and Wi-Fi hotspots.

This connection enables access to real-time data such as GPS navigation, vehicle diagnostics, remote locking and unlocking that are accessible via smart phone devices or fleet management platforms. Automotive SIM Cards are similar to a regular SIM in function but are managed differently and at scale. They are also configured for vehicle use – as opposed to a standard single-network consumer phone type contracts.

Typically, automotive SIM cards are integral to vehicle security, navigation systems, vehicle telematics, diagnostics, and fleet management functions, but are also often fitted within devices such as front and rear view dashcams, routers and driver behaviour monitoring systems or insurance boxes. As we move more towards greater electric vehicle (EV) adoption, the role of vehicle connectivity increases as the need to manage and optimise battery management and charging processes safely become paramount.

This guide will therefore provide everything you need to know about vehicle SIM cards, their importance to users and fleet management functions.

The main functions of a vehicle SIM cards are to provide secure access to navigation and connectivity features while also protecting the network security of the vehicle. Ensuring mobile connectivity for various critical features within an automotive vehicle, van, or car. For example, GPS navigation, battery and charging management, entertainment systems, and remote diagnostics all need to be connected, but must not allow nefarious access to the vehicle systems.

By enabling these online connectivity functions, the card allows for seamless communication between the vehicle and the outside world, making driving safer and more convenient. Additionally, the SIM card can also be used for vehicle tracking and monitoring, ensuring that the car or fleet vehicle is always connected and accessible. With the advancements in technology, the role of a vehicle SIM card continues to expand, offering more possibilities for integration with smart devices and services. Vehicle SIM cards are also used for emergency response systems that typically involve voice call systems.

Most vehicle or automotive SIM cards typically have multi-network capability. This is to provide the greatest geographical coverage available. They also cater for seamless international roaming. For example, a vehicle navigating between the United Kingdom, Netherlands and Belgium would need to remain connected cost-effectively at all times.

Mobile device user apps play a crucial role in enhancing vehicle connectivity by offering features such as remote start, lock/unlock, and diagnostics monitoring to users. Manufacturer apps provide convenience to users by allowing them to monitor control various aspects of their vehicles from their smartphones even when they are away from the vehicle. With the rise of the Internet of Things (IoT), user apps are becoming increasingly important in creating a seamless and connected driving experience. From navigation planning, charging monitoring and control, to real-time vehicle tracking and safety, these apps are transforming the way we interact with our vehicles.

Vehicle SIM cards are utilised by vehicle manufacturers, car leasing companies, and retailers to enable a wide range of connected services in modern vehicles. The SIM cards provide access to real-time data such as vehicle diagnostics, location tracking, and remote software updates that are vital to security.

For vehicle manufacturers, SIM cards are also essential in implementing features such as diagnostics, internet connectivity, over-the-air software updates, and advanced infotainment systems. Many vehicles being supplied with SIM cards installed at manufacture, which are used for vital software and performance monitoring functions through the vehicle lifecycle. They can be eUICC enabled, to ensure a single SKU at manufacture, which is configured once the vehicle lands in its intended region.

Car leasing companies also benefit from SIM cards by being able to monitor vehicle usage and provide value-added services to their customers. Many cars are now coming with a SIM card included in the leasing agreement to provide vital ongoing services.

Retailers also utilise SIM cards to offer connected car accessories and services, enhancing the overall driving experience for consumers.

In fleet or emergency vehicles, the vehicle may also include a router that creates a WiFi hotspot in and around the vehicle. This can be important for connecting multiple user devices. WiFi routers tend to have larger antenna than mobile phones and are therefore able to remain connected at greater distances from masts, especially when powered by multi-network SIM cards.

Typically, SIM cards are found in a protected area of the car interior, within the telematics unit or the infotainment system of the car. The location, however, will depend upon whether it is intended to be accessed by the user, qualified technicians or by the manufacturer themselves. This means you may need to refer to your car’s manual or contact the manufacturer or fleet operator for specific instructions on how to access and replace the SIM card. The location of the SIM card or router can vary depending on the make and model of the vehicle or the types of devices fitted, so it is important to research before attempting to find it. If accessing, remember to handle the SIM card with care to avoid any damage or disruption to your vehicle’s connectivity services.

Enhanced Navigation 

With a vehicle or automotive SIM card, your vehicle’s navigation system can receive real-time and dynamic traffic updates, helping avoid traffic congestion and find the quickest routes to chargers. This feature is particularly useful for daily commutes, long-distance travellers, urban driving and for commercial fleet such as taxis and delivery drivers. For consumers, this can mean ensuring Android based vehicle systems connect seamlessly to voice-activated mapping and navigation systems such as Google maps.

Infotainment and Entertainment 

In-vehicle connectivity can mean that drivers and passengers can enjoy streaming music, videos, and other online content thanks to the internet connectivity provided by the vehicle SIM card. Car systems and in-vehicle routers can have more powerful antennae than mobile phones that are more reliant on battery saving technologies and miniaturisation. This can make long road trips more enjoyable for everyone on board (including paying passengers or families with children) who can connect their devices to the onboard wi-fi. It is important, however, to use a network provider such as CSL who focus on network security. There having been instances where vehicles have been hacked through their infotainment systems.

Emergency Services 

In case of an accident, vehicle SIM cards can automatically contact emergency services, providing them with the location and other critical information to ensure data accuracy and rapid response. Some apps also provide this feature to friends and family. This feature can be a lifesaver in critical situations.

Remote Diagnostics and Maintenance 

Vehicle SIMs allow for remote diagnostics and predictive maintenance. Car manufacturers and service providers can monitor the vehicle’s health in real-time, notifying you of any potential issues before they become serious problems. They can also help manage service plans and recalls.

Car Wi-Fi Hotspot 

Many vehicle SIM cards when combined with routers, offer the ability to create a Wi-Fi hotspot within and around the vehicle. This is perfect for business travellers who need to stay connected or for families who want to keep everyone entertained.

Compatibility 

Ensure that the SIM card is compatible with your vehicle’s make and model and follows the correct form factor. Some vehicles come with built-in SIM card slots that may even be embedded on control boards. Others may require an external device or antenna based upon the intended use or required capability. Some vehicles may also have multiple SIM cards whose communications plans are designed or optimised for certain functions. For example, video surveillance, emergency voice calls, retrofitted insurance monitoring telematics boxes and even satellite functionality.

Data Plan – Fixed Period, Monthly Subscription or Pure PAYG SIM 

Car SIM plans are therefore available in a number of formats that tend to operate differently for vehicle manufacturers, fleet operators and end consumers. It is important to choose a communications and data plan that suits your particular needs.

Manufacturers and fleet operators typically prefer long-term aggregated plans that smooth usage across large fleets and allow plans to be manged by groups, so that different vehicle functions can be managed separately.

For consumers, if you plan to use your car’s Wi-Fi hotspot frequently, opt for a plan with a higher data allowance such as a big data PAYG SIM. For occasional use, a smaller data plan might suffice. Monthly plans will usually have a data limit, so it is important to select one that coincided with usage needs. The best plan or data SIM deals will depend on the car usage and whether the connectivity is needed for telematics and navigation functions or for entertainments and as a wi-fi hotspot.

Network Coverage 

It is important to select a SIM card from a multi-network provider with high-availability network coverage. Ideally, for vehicles this needs to be multi-network with the maximum connections to operators, ensuring maximum connections even in the most remote or busy locations. Vehicle SIM cards as multi-network variants provide maximum connection resilience with international roaming options. For the highest possible resilience, the resilient SIM (rSIM) additionally ensures operation through core network outages.

Cost 

If you are selecting or upgrading vehicle SIM cards, it is important to compare different SIM card data plans that match your use case, keeping in mind the critical nature of vehicle security and network resilience.

Installation and Setup 

Installing a vehicle SIM card is usually straightforward. For cars with built-in slots that are designed to be easily accessible for drivers, simply insert the SIM card and follow the on-screen instructions for setting up the connection. The provider APN will need to be configured. For retrofitted devices, you may need to connect the device to your car’s OBD-II port or another compatible interface and set up the SIM card through the device’s app or website. Manufacturer SIM cards are unlikely to be accessible or replaceable and would seriously affect the vehicle safety and performance if interfered with.

Vehicle SIM cards are revolutionising the way we drive by enhancing connectivity and bringing a host of smart features to our cars and EVs. From improved navigation, safety, battery management and entertainment to emergency services and remote diagnostics, the benefits are numerous. When choosing a vehicle SIM card for your use case or applications, it is important to consider factors such as scalability, compatibility, data plans, network coverage and security. With the right vehicle SIM card, you can transform your fleet management operations, driving safety and experiences and stay connected no matter where the road takes you or your drivers.
If you would like to understand more of how CSL provides secure and resilient vehicle, telematics and fleet connectivity solutions to some of the main manufacturers and post sale equipment service providers, then please contact us today.