This may be an incompatible version.

There are many Bluetooth versions of body fat scales, and their compatibility is not very good.

New health watch, weighing scale, etc. Generally, an operating system above Android 4.3 is required to pair correctly.

The body fat scale can't connect to the Bluetooth of the mobile phone, so there are the following solutions:

1. If the connection fails, please try to get on the body fat scale before connecting;

2, restart the phone Bluetooth and then reconnect;

3, restart the phone and then reconnect;

4. When the battery of the body fat scale is exhausted, it may not be able to bind. Please replace the battery of the body fat scale and reconnect it.

Extended data:

Bluetooth is a wireless technical standard, which can realize short-distance data exchange between fixed equipment, mobile equipment and personal area network of buildings (using UHF radio waves in ISM band of 2.4-2.485 GHz).

Bluetooth technology was first invented by telecom giant Ericsson in 1994 as a substitute for RS232 data line. Bluetooth can connect multiple devices, which overcomes the problem of data synchronization.

Today, Bluetooth is managed by the Bluetooth Special Interest Group (SIG). The Bluetooth Technology Alliance has more than 25,000 member companies in the world, which are distributed in the fields of computers, networks and consumer electronics. IEEE lists Bluetooth technology as IEEE 802. 15. 1, but this standard is no longer maintained.

Bluetooth Technology Alliance is responsible for supervising the development of Bluetooth profile, managing certification projects and maintaining trademark rights. The manufacturer's equipment must meet the standards of Bluetooth Technology Alliance before it can enter the market in the name of "Bluetooth equipment". Bluetooth technology has a set of patented networks that can be distributed to devices that meet the standards.

Baidu Encyclopedia: Bluetooth