Choosing a suitable tariff plan for a car GPS tracker often becomes a secondary task after purchasing the device itself, but the long-term effectiveness of the monitoring system depends on the quality of communication and the cost of maintenance. Many car owners make the mistake of connecting standard tariffs for smartphones, without thinking that the tracker does not require voice communication, but a stable and economical Internet channel. The wrong choice can lead to the fact that the device often loses connection with the server, or the monthly costs of a SIM card will exceed the cost of the equipment itself in a couple of years.
In the modern world of telecommunications, operators offer many specialized solutions for Internet of Things (IoT) and M2M (Machine-to-Machine) devices, which are radically different from the usual packages for mobile phones. Key parameter This is where the volume of traffic and coverage area comes into play, not the number of minutes or SMS. Understanding the technical nuances of data transfer will allow you to avoid overpayments and ensure reliable control over the location of your car at any point.
Principles of communication in GPS trackers
For correct operation GPS tracker two types of communication are required: satellite to determine coordinates and cellular to transmit this data to the server. If the satellite module operates autonomously, receiving signals from spacecraft, then the cellular module acts as a “courier” sending data packets through the operator’s network. It is for this transfer process that funds are written off according to your tariff plan.
Modern trackers mainly use 2G (GPRS/EDGE), 3G and 4G (LTE) networks. Although technology has advanced, many budget and specialty security devices still rely on the standard GSM/GPRS, as it provides wide coverage even in remote areas where 4G may not be available. It is important to understand that high speed is not required to transmit coordinates; a minimal data transmission channel is sufficient.
Amount of data transferred directly depends on the frequency of sending points to the server. If the tracker is configured to send coordinates every 10 seconds when moving, the traffic consumption will be significantly higher than in the “sleep” mode with sending data once an hour or when moving. Therefore, before choosing a tariff, you need to decide on the operating mode of your device.
- 📡 The satellite module only receives signals to calculate coordinates.
- 📶 The cellular module sends the received data to the monitoring server.
- 🔋 The energy consumption of the tracker depends on the frequency of communication sessions with the tower.
It is worth noting that some advanced models are able to adapt to the quality of communication, accumulating points in the internal memory when there is no signal and sending them in a “bundle” when the network appears. This allows you to save traffic and battery power, but requires the correct calculation of the megabyte limit for the month.
Types of SIM cards for car trackers
In the telecommunications market for monitoring devices, there are various form factors and types of cards, each of which has its own advantages and disadvantages. Everyone is familiar with the standard plastic SIM card in Mini, Micro or Nano format, but automotive electronics often require more robust solutions that can withstand extreme operating conditions.
Industrial SIM cards deserve special attention because they have an extended operating temperature range. A regular consumer card may stop working at temperatures below -25°C or above +85°C, which is critical for a car left outside in winter or heated by the sun. Industrial cards guarantee stable operation in the range from -40°C to +105°C.
⚠️ Attention: Using a regular SIM card in a tracker installed in an unheated garage or on the street can lead to the device suddenly turning off in cold weather, even if there is money on the balance.
There are also virtual SIM cards (eSIM) that are soldered into the device by the manufacturer. They are protected from vibration and oxidation, but are more difficult to reissue or replace when changing operators. The choice between a physical and virtual card depends on the specific tracker model and your preferences in managing your subscription.
- 🏭 Industrial SIM cards can withstand extreme temperatures and vibration.
- 💳 Virtual eSIMs are protected from physical removal and corrosion.
- 🔄 Regular cards are available in any salon, but are less reliable in a car.
Comparison of operator tariffs: M2M versus regular ones
The main dilemma when connecting a tracker is whether to choose a specialized M2M (Machine-to-Machine) tariff or use a regular archive tariff for a phone. M2M tariffs were developed specifically for automated systems and often do not have a subscription fee in the classical sense, offering a traffic package for a year or month without unnecessary options.
Regular tariffs for smartphones often include packages of minutes and SMS, which the tracker absolutely does not need, for which you overpay. In addition, on “human” tariffs, operators can block the SIM card in the absence of voice activity, regarding this as suspicious activity. M2M tariffs are free of such restrictions and are designed for constant background transfer of small amounts of data.
When comparing costs, it is important to consider not only the monthly payment, but also the cost of “logging in” to the system. Some operators require the purchase of their SIM card, which may cost more than a regular one, but includes a starter package of services. Others allow you to insert any card, but impose expensive options.
| Parameter | M2M tariff | Regular rate | Corporate rate |
|---|---|---|---|
| Subscription fee | Low / Annual | Average / Monthly | Individual |
| Voice communication | Missing or paid | Included in the package | Enabled |
| IP stability | High (static IP) | Dynamic IP | Customizable |
| Blocking for downtime | No | Possible | No |
The table shows that for telemetry tasks, specialized solutions look preferable. However, if you still have an old tariff without a monthly fee with cheap Internet, it may become a temporary solution until you find the best option.
Calculation of the required volume of traffic
One of the most common questions is how many megabytes per month a GPS tracker really needs. The answer depends on the data transfer protocol and device settings. Protocols like Wialon IPS or Galileosky They are quite effective and transmit only dry data about coordinates, speed and state of inputs.
On average, with a standard setting (sending a point every 30 seconds or when the course changes), the tracker needs from 15 to 50 MB of traffic per month. If you configure the device to transmit data every second or enable telemetry transmission from the CAN bus (fuel consumption, temperature), the consumption can increase to 100-200 MB.
Traffic calculation formula
The size of one data packet (usually 100-200 bytes) is multiplied by the number of points per day and by 30 days. For example: 150 bytes 2880 points (every 30 sec) 30 days ≈ 12 MB. We add service connections and get a reserve of 20-30 MB.
You shouldn’t chase unlimited tariffs if they are expensive. For a tracker, connection stability is more important than speed. Even the most modern 4G tracker will switch to 2G in conditions of poor signal, and the speed will drop, but the coordinates will be lost. The main thing is to have a reserve of megabytes.
- 📉 Standard operating mode consumes 15-30 MB per month.
- ⛽ Fuel and CAN bus control increases consumption up to 100 MB.
- 📡 Listening to the interior (if there is a microphone) requires hundreds of megabytes.
If your device is equipped with a camera or interior listening feature, the calculations change dramatically. Transferring audio or photos requires significantly more resources, and here it is worth thinking about tariffs with traffic volumes from 500 MB to 1 GB.
Hidden costs and technical nuances
When choosing a tariff for GPS monitoring It is important to consider not only the advertised price, but also hidden conditions. Some operators charge a fee for inactivity, for checking your balance via USSD requests, or for logging into your personal account. For a tracker that works autonomously, these little things can come as an unpleasant surprise.
Particular attention should be paid to the coverage area. A low-cost virtual operator (MVNO) can lease towers from a major player, but in some regions priority will be given to subscribers of the main brand. For a vehicle that may travel across the country, choosing a carrier with the best coverage for your area and highways is critical.
⚠️ Attention: Check if your operator is blocking the use of SIM cards in roaming if you plan to travel to other regions or countries. Many budget M2M tariffs only work in the home region.
It is also worth checking the type of IP address provided. Dynamic IP changes every time you reconnect, which is normal for most cloud monitoring platforms. However, if you are running your own tracking server, you may need a static IP, which is often a paid option.
☑️ Check the tariff before purchasing
Another nuance is the validity period of the SIM card. Some M2M prepaid cards are valid for only one year before requiring re-issuance or a complex renewal process, while others work indefinitely with minimal activity.
Instructions for setting up and replacing a SIM card
The process of installing a new SIM card into the tracker requires following a certain sequence of actions to avoid configuration errors. First, you need to activate the card in your phone, check the balance and disable the PIN code request, since the tracker does not know how to enter it when loading.
After preparing the card, insert it into the switched off tracker. Turning on the device with the card already inserted ensures that the communication module is initialized correctly. If the tracker is already installed in the car, you may have to remove it to access the slot, or use SMS configuration if the device supports remote APN reconfiguration.
APN configuration command (example for Teltonika):setparam 2001:internet.mts.ru
setparam 2002:mts
setparam 2003:mts
saveparam
reboot
Setting up an access point (APN) is a critical step. Without the correct APN parameters, the tracker will not be able to access the Internet, even if the SIM card is active and has a positive balance. This data can always be found on the operator’s website or in the instructions for the SIM card.
Save screenshots of the APN and monitoring server settings in the cloud or on your phone before replacing the SIM card to quickly restore the configuration in case of a reset.
After installation and configuration, be sure to check the connection status in your personal account of the monitoring system. If the device does not communicate for more than 15-20 minutes, check your balance and correct APN entry.
FAQ: Frequently asked questions
Is it possible to use a SIM card from a smartphone in a GPS tracker?
Technically it is possible if you disable the PIN code. However, this is not economically profitable and risky: the operator can block the card for lack of voice activity, and tariffs for smartphones are usually more expensive than specialized M2M solutions for small data volumes.
What to do if the tracker stops transmitting coordinates?
First of all, check your SIM card balance. If you have funds, make sure your plan hasn't expired. There may also be a problem with coverage in the parking area or a failure of the APN settings after updating the operator’s network.
Do you need unlimited internet for a GPS tracker?
No, unlimited internet for a tracker is a waste of money. A standard device needs 50-100 MB per month. Unlimited may only be required if you actively use interior monitoring or transfer of photos from cameras.
How to extend the validity period of an M2M SIM card?
Renewal conditions depend on the operator. Usually it is enough to top up your balance with a minimum amount every 6-12 months. Some operators require entering into an agreement or switching to another tariff to extend the life of the card.
The optimal tariff for a tracker is a specialized M2M plan with an annual traffic package of about 50-100 MB and an extended temperature range for the SIM card.