TECH Signal 363
What are the differences between Bluetooth, Wi-Fi and 2.4G wireless devices?
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Bluetooth, Wi-Fi and 2.4 GHz wireless each target different trade-offs in range, bandwidth, power use and infrastructure requirements.
Choosing the right radio affects device battery life, latency and whether a network connection is needed. Engineers must match the technology to the use case, high-speed internet, low-power audio, or ultra-responsive input. Mis-selection can lead to excess power draw, unacceptable lag, or the need for extra hardware like routers or dongles.
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Wi-Fi supplies internet-capable networking with up to about 50 m range and multi-gigabit speeds, but consumes considerably more power.
Bluetooth delivers low-power short-range links (around 10 m) at roughly 3 Mbps, ideal for audio and simple peripheral pairing.
2.4 GHz proprietary dongles give sub-5 ms latency and stable connections for keyboards, mice and game controllers, yet they lack router-based networking.
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