As a backup phone: You can use your old phone as a backup phone, so you can continue to use your old phone when the main phone breaks down or needs maintenance.
As a children's mobile phone: If you have children, you can use your old mobile phone as a children's mobile phone and download some educational applications and games, so that children can learn and entertain without disturbing you.
As a media center: You can connect your old mobile phone to the TV and turn it into a media center for streaming video and music, or connect it to the home office network and use it as a remote control device.
As a camera: You can use your old mobile phone as a special camera to take high-definition photos and videos and save good memories.
As a smart home controller: you can download smart home applications, turn old mobile phones into smart home controllers, and control smart home devices at home, such as lighting, temperature, security equipment, etc.
As a fitness assistant: You can download some fitness applications, such as running, cycling and fitness tracking applications, and use your old mobile phone as a fitness assistant to record your fitness data and progress.
In a word, although the function of the old mobile phone may not be as good as that of the new one, it can still be fully utilized in various ways.
As soon as people enter old age, the body will increasingly need to strengthen exercise, actively prevent and delay aging,