# BLEPeripheralServer.onCharacteristicUnsubscribed(function callback)
Start from base library version 2.13.0. Please remaining backward compatible.
with Promise style call: Not supported
Mini Program plugin: Not supported
Listen to uncharacteristic subscription events, only iOS Support.
# parameter
# function callback
Callback function to unsubscribe from characteristic events
# parameter
# Object res
| attribute | type | Introductions |
|---|---|---|
| serviceId | String | Bluetooth Feature Corresponding Service UUID |
| characteristicId | String | Bluetooth characteristic UUID |