What is the difference between Bluetooth and Wi-Fi ?

Bluetooth , wifi

Here’s a clear comparison of Bluetooth and Wi-Fi in table format:

Feature

Bluetooth

Wi-Fi

Purpose

Short-range device connections (e.g., headphones, keyboards)

High-speed internet access and networking

Range

Up to 10 meters (Class 2), up to 100 meters (Class 1)

Up to 50-100 meters (indoors), 150 meters (outdoors)

Speed

Up to 3 Mbps (Bluetooth 5.0)

Up to 9.6 Gbps (Wi-Fi 6E/7)

Power Consumption

Low (ideal for battery-powered devices)

High (requires more power)

Frequency Band

2.4 GHz ISM band

2.4 GHz, 5 GHz, and 6 GHz (Wi-Fi 6E/7)

Topology

Point-to-point or piconet (1 master, 7 slaves)

Star topology (devices connect to a central router)

Security

Pairing and encryption (vulnerable to attacks like Bluejacking)

WPA3, WPA2 encryption (more robust security)

Cost

Low cost and simple to implement

Higher cost and more complex setup

Use Cases

Connecting peripherals (e.g., headphones, mice)

Internet access, streaming, file sharing

Network Capacity

Limited (up to 7 devices in a piconet)

Supports many devices simultaneously

Latency

Low latency (suitable for audio streaming)

Higher latency (depends on network congestion)


Key Takeaways:

  • Bluetooth is ideal for short-range, low-power connections between devices.
  • Wi-Fi is designed for high-speed internet access and networking over larger areas.
  • Both technologies serve different purposes and are often used together in modern devices.

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