connectivity
What is Bluetooth?
Short-range wireless technology for connecting devices and accessories.
Bluetooth is a wireless technology standard for exchanging data over short distances. In smartphones, it's used for connecting headphones, speakers, smartwatches, and other accessories.
| Bluetooth Versions: | |
|---|---|
| --------- | -------------- |
| 4.0 | Low Energy (BLE) |
| 4.2 | Faster speed, better privacy |
| 5.0 | 2x speed, 4x range |
| 5.1 | Location finding |
| 5.2 | LE Audio, better quality |
| 5.3 | Improved efficiency |
Bluetooth 5.3 Benefits
- Lower power consumption
- Better audio quality with LE Audio
- Enhanced connection stability
- Improved coexistence with Wi-Fi
Bluetooth Codecs
- SBC: Universal, basic quality
- AAC: Apple default, good quality
- aptX: Qualcomm, CD-quality
- LDAC: Sony, Hi-Res audio
- LC3: New standard for LE Audio
For audio quality, the codec matters:
Common Uses
- Wireless earbuds and headphones
- Smartwatch connections
- Car audio systems
- Fitness trackers
- File sharing (Bluetooth Share)
Most modern smartphones have Bluetooth 5.0 or newer.