Bluetooth excels in scenarios where devices such as wearables or peripherals require pairing with a mobile device for data transmission while conserving power, due to its low-energy protocols suitable for short-range communication. In contrast, Wi-Fi Direct might also be used for device-to-device connections but is optimized more for performance than power efficiency and generally handles longer distances and higher throughput. Zigbee, typically used for home automation devices due to its ability to create mesh networks, is not primarily designed for direct mobile device pairing. Lastly, LTE is a standard for wireless broadband communication over cellular networks, which is not optimized for short-range, low-energy device pairing and data transmission.