Huawei Y9s STK-L21 User Guide
![Huawei Y9s STK-L21 Smartphone manual cover](/images/XnVyTGmoErzfftgAgdaUNmvi/thumbs/thumb175x175.webp)
To take a screenshot on your Huawei Y9s, press and hold the Power button and Volume Down button simultaneously until you see the screen flash. The screenshot will be saved in your Gallery under 'Screenshots'.
If your Huawei Y9s is not charging, try the following: ensure the charger and cable are not damaged, clean the charging port, restart your phone, and try using a different charger. If the problem persists, contact Huawei support.
To improve battery life, reduce screen brightness, close unused apps running in the background, enable battery saver mode, and turn off connectivity features like Bluetooth and GPS when not in use.
To reset your Huawei Y9s to factory settings, go to Settings > System & updates > Reset > Reset phone. Ensure you back up important data as this process will erase all data on the device.
If your Huawei Y9s is running slow, try clearing cache data, uninstalling unused apps, freeing up storage space, and restarting your device. If the issue persists, consider performing a factory reset.
To update the software on your Huawei Y9s, go to Settings > System & updates > Software update. If an update is available, follow the on-screen instructions to download and install it. Ensure your phone is charged and connected to Wi-Fi.
You can transfer data using the Huawei Phone Clone app. Install the app on both devices, follow the instructions to connect them, and select which data you want to transfer.
If your Huawei Y9s keeps restarting, check for software updates, remove any recently installed apps, and ensure your phone is not overheating. If the issue continues, consider performing a factory reset or contact Huawei support.
To enable developer options, go to Settings > About phone and tap 'Build number' seven times. Developer options will then be available in the System section of the Settings menu.
If your Huawei Y9s is not connecting to Wi-Fi, restart your phone and router, forget the Wi-Fi network and reconnect, ensure the Wi-Fi network is functioning, and check that Airplane mode is off.