It's advised to keep your Nokia smartphone in a dry location. Also, it’s best to ensure that the fingerprint sensor is not exposed to metal or sharp objects which may cause scratches, as this could inadvertently compromise the accuracy of the fingerprint sensor.
Use the charger provided in the phone’s original sales box. This is because off-brand chargers may damage the phone's battery thereby voiding the Manufacturer’s Limited Warranty.
Ensure the software on your Nokia smartphone is updated to the latest available software:
Keep all of your apps up to date by opening the Play Store app and heading to “My Apps and games”. This will check updates for apps and help to fix any existing app issues.