> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://wiki.kardena.de/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# My Kardena smartwatch is not working – what should I do?

# My Kardena smartwatch isn’t working – what should I do?

Is your Kardena smartwatch no longer working properly?
Not every unusual behaviour automatically means that the smartwatch is broken. Many problems can be solved by adjusting the settings, checking the Bluetooth connection or restarting the device.

## 1. What problem are you experiencing?

First, select the relevant problem description:

* Smartwatch won’t switch on
* Smartwatch isn’t charging
* Battery is draining unusually quickly
* Bluetooth connection isn’t working
* Connection keeps dropping
* Notifications aren’t displayed
* Synchronisation isn’t working
* Display isn’t responding
* Measurements appear unusual
* Firmware update isn’t working

**Please check the relevant article in our Help Centre first.**

## 2. Restart your smartwatch

Many temporary issues can be resolved with a full restart.
Switch the smartwatch off and back on again.
If needed, also restart your smartphone.

## 3. Check the connection and app

If you are experiencing problems with syncing, notifications or calling, please check:

* Bluetooth connection
* App permissions
* App background activity
* Your smartphone’s power-saving settings

Separate instructions are available for different smartphone manufacturers.

## 4. Factory reset

If the steps above do not help, it may be worth trying a factory reset.

> ⚠️ **Warning – Data Loss:**
> A factory reset may result in the loss of any data on the smartwatch that has not yet been synchronised.

## 5. Problem still persisting?

If the issue continues, please contact Kardena Support.

Please provide us with the following information where possible:

* Order number
* Kardena model
* Detailed description of the issue
* Smartphone used
* Android or iOS version
* Smartwatch app used

Photos or a short video may also be helpful if the issue is visible or can be reproduced.

> 💡 **Tip:**
> The more accurately you describe the problem, the quicker we can assess whether further action is required or if a claim should be made.
> ⚠️ **Please Don't Send Items Unannounced:**
> Do not send a supposedly defective smartwatch to Kardena without first registering the issue or receiving the relevant return instructions. Doing so may delay the processing and resolution of your case.