Fail to add a sensor or update the data?
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- Android: First check if GPS and location permissions, as well as Bluetooth are turned on (differs depending on the model)

  - Android10 open

    - “bluetooth permission”

    - “location permissions”

  - Android12 and above open

    - “bluetooth permission”

    - “nearby devices”

- iOS: Just need to open Bluetooth

- Turn on the ST7 switch, see if there is a drop sound. If there is a drop sound, it means the device is normally turned on and playing voice.

- After the ST7 is successfully added to the terminal device and is online, enter the "Sensor Settings" page, other terminal devices will not be able to receive ST7's broadcast data.

- When the ST7 is displayed as offline within the effective communication range of the terminal device, it is necessary to turn off Bluetooth and turn it on again.

**Please click to view**, How to set up sensor `ST7 <../setup/temp-sensor-st7.html>`_