a) If the issue appears occasionally, it may be caused by anomalies in a file. It is recommended that you continue to use the device normally.
b) Check if the issue occurs during charging. If yes, we recommend trying the official charger and data cable.
c) If the issue occurs while using a third-party app, make sure the app is compatible with your device and Android version. Try uninstalling the third-party app.
d) If the issue occurs while using the built-in app, try to update app to the latest version and reset or update your device. (Refer to Q How can I perform a factory reset on my phone & Q How can I upgrade my device).
If the previously described options do not help, you can contact our hotline or repair center to get more professional technical assistance. Find the hotline or repair center information from the TCL website or APP “Support Center”.