"Does this tracker work without internet?" — It's the most common question we receive from customers across India. The answer reveals a fundamental misunderstanding about how GPS technology works — and why the SIM card in your tracker is just as important as the GPS chip itself.

Understanding GPS: The Satellite Side

GPS — the Global Positioning System — is a network of approximately 31 satellites maintained by the United States government, orbiting the Earth at an altitude of about 20,000 km. Every GPS-enabled device (your phone, your car's navigation system, your tracker) receives signals from at least 4 of these satellites simultaneously. Through a process called trilateration — calculating the time delay between satellite signal transmission and device reception — the GPS chip determines its precise geographical coordinates: latitude, longitude, and altitude.

Critically, this satellite signal is one-directional and completely free. The satellites broadcast continuously. Your GPS device only receives — it never sends back to the satellite. This means the GPS portion of your tracker works regardless of mobile network coverage, internet connectivity, or SIM card presence.

The Problem: GPS Knows, but Cannot Tell

Here is where the key distinction emerges. A GPS tracker that has calculated your vehicle's location knows exactly where the vehicle is. But if there is no SIM card and no internet connection, that location data is trapped inside the device. It cannot be transmitted anywhere.

The tracker knows. You don't. The theft is happening. You have no idea.

This is why real-time vehicle tracking requires a second technology alongside GPS: the cellular network.

Understanding GSM: The Communication Side

GSM (Global System for Mobile Communications) is the technology used by mobile phone networks — Airtel, Jio, Vi — to transmit voice and data. When your GPS tracker has a SIM card, it uses the GSM network to:

• Transmit the GPS coordinates it has calculated to the AlikeGPS server
• Receive commands from the server (including engine lock/unlock instructions)
• Send SMS alerts for ignition events, speed violations, and SOS activations
• Maintain a live data connection for real-time map updates on your app

Without the GSM/SIM component, your tracker is a data logger — not a real-time tracker.

The 3 Types of GPS Trackers: Which One Do You Actually Need?

Type 1 — GPS Data Logger (No SIM Required)

A GPS data logger stores location data in internal memory — recording a "breadcrumb" trail of where the device has been. To access this data, you must physically connect the device to a computer via USB and download the log file.

Use case: Research, expedition mapping, sports activity logging. Not suitable for: Vehicle anti-theft, real-time fleet tracking, or family safety applications. You cannot receive alerts, track live location, or activate engine cut-off with this type of device.

Type 2 — Real-Time GSM GPS Tracker (SIM Card Required)

This is what AlikeGPS provides. The device contains both a GPS chip (for location determination) and a cellular GSM module (for data transmission). The SIM card gives the device its own phone number and data plan, through which it communicates with the AlikeGPS server 24/7.

Use case: Vehicle anti-theft, driver tracking, family safety, fleet management — all real-time monitoring applications. This is the category that enables live tracking, instant alerts, and remote engine cut-off.

Type 3 — Satellite Tracker (No GSM Required, Uses Satellite Networks)

Satellite communicators use dedicated satellite networks (like Iridium or Inmarsat) instead of mobile networks. They work globally, even in areas with zero mobile coverage. They are extremely expensive (₹30,000-₹1,50,000) and are designed for extreme expeditions in remote areas like the Himalayas or deep ocean voyages.

Use case: Professional trekking, remote area expeditions. Not cost-effective for everyday vehicle tracking in urban India.

What Happens to Your Tracker in Dead Network Zones?

This is a realistic concern for long-distance travel through Bihar's rural highways or remote forest areas. Here is what happens when your AlikeGPS tracker enters an area with poor or zero mobile network coverage:

1. The GPS chip continues receiving satellite signals and calculating location — unaffected by mobile network absence.
2. The GSM module attempts to reconnect to the cellular network periodically.
3. Location data is stored in the device's internal memory buffer.
4. When mobile connectivity is restored — even briefly — the device uploads all buffered location data to the server in a burst transmission.
5. Your trip history shows the complete route, including the portions where there was no real-time connectivity.

The practical implication: in real-time tracking, there may be a gap in live updates during the no-signal period. But the route history will be complete once connectivity is restored.

The AlikeGPS Solution: Free Pre-Installed SIM

Every AlikeGPS tracker purchased includes a free pre-installed Airtel SIM card with data service included for the first year. This eliminates the common headache of purchasing a separate SIM, activating it, configuring APN settings, and managing a separate mobile plan for your vehicle tracker.

Our technicians handle everything during installation: SIM activation, APN configuration, server pairing, and app setup. You leave with a fully operational real-time tracking system from day one.

After the first year, a nominal annual renewal fee maintains the data service. Alternatively, if you prefer to use your own SIM from any Indian operator (Jio, Vi, etc.), our tracker supports any standard nano-SIM with a data plan.

Frequently Asked Questions