# BLE component returns - "Characteristic read failed error"

**URL:** <https://community.thunkable.com/t/ble-component-returns-characteristic-read-failed-error/2615368>\
**Category:** BLE / BlueTooth\
**Created:** [September 27, 2023, 12:04am UTC](https://community.thunkable.com/t/ble-component-returns-characteristic-read-failed-error/2615368 "2023-09-27T00:04:04Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![karan.kajani27vhynr](https://avatars.discourse-cdn.com/v4/letter/k/e47774/32.png) [@karan.kajani27vhynr](https://community.thunkable.com/u/karan.kajani27vhynr)\
**Post date:** [September 27, 2023, 12:04am UTC](https://community.thunkable.com/t/ble-component-returns-characteristic-read-failed-error/2615368/1 "2023-09-27T00:04:04Z")

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Hello,

I have been trying to create an app that receives byte array from a RaspberryPi controller. I know that Thunkable only allows READ property for a characteristic and I have set my characteristic to that. However, it always throws an error saying Characteristic \< Characteristic ID \> read failed for device and Service . I am not sure what am I doing wrong. Can someone share the example of a working code on the microcontroller side so I could check my code and make changes accordingly?

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**Author:** ![vishruth-ram](https://avatars.discourse-cdn.com/v4/letter/v/82dd89/32.png) [@vishruth-ram](https://community.thunkable.com/u/vishruth-ram)\
**Post date:** [September 28, 2023, 6:52am UTC](https://community.thunkable.com/t/ble-component-returns-characteristic-read-failed-error/2615368/2 "2023-09-28T06:52:22Z")

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> [@Karan.kajani27vhynr](#):
>
> Characteristic \< Characteristic ID \> read failed for the device and Service

The characteristic ID might be wrong, or the device or your phone doesn’t have Bluetooth enabled in it.

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**Author:** ![ioannis](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/ioannis/32/146956_2.png) [@ioannis](https://community.thunkable.com/u/ioannis)\
**Post date:** [November 8, 2024, 1:33pm UTC](https://community.thunkable.com/t/ble-component-returns-characteristic-read-failed-error/2615368/3 "2024-11-08T13:33:27Z")

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