1, check the battery: make sure that the door lock battery has enough power. Battery power is too low, it will lead to the screen can not be displayed properly. Try replacing or charging the battery and then try operating the door lock again.
2, restart the door lock: some door locks will have software failure or conflict, you can try to restart the door lock to solve the problem. Find the power switch or battery compartment cover on the door lock, turn it off or on for a period of time, and then restart the door lock.
3. Check the power connection: Make sure the door lock has a solid power connection. Sometimes the power cord is loose or detached, resulting in the screen not working properly. Check if the power cord is firmly connected and make sure it is not disconnected or damaged.
4, reset the door lock: the above steps did not solve the problem, try to restore the door lock to the factory settings. The specific reset method varies depending on the door lock model, please refer to the user manual of the door lock or contact Philips customer support to get the exact operating instructions. Philips is a globally recognized technology company headquartered in the Netherlands. Founded in 1891 and originally known for its production of electric lamps and electronics, today Philips is a diversified company with a wide range of businesses in the areas of healthcare, consumer life and lighting. Philips is one of the world's leading companies in healthcare, providing medical devices, healthcare solutions and services. Its product range covers diagnostic imaging, patient monitoring, surgical equipment, and home care. Philips is committed to improving people's health and quality of life by delivering better healthcare through innovative medical technologies and solutions.