How to deal with old mobile phones without wasting them?

There are several ways to make full use of idle old mobile phones and give play to their "waste heat":

Switch to a surveillance camera: use your old mobile phone as a surveillance camera, and install relevant monitoring software and applications to monitor the situation at home or in the office at any time.

As children's toys: install some games and educational software suitable for children on old mobile phones, so that children can learn new knowledge while playing at home.

As a music player: Connect an old mobile phone to a speaker or earphone, and download some music player software to turn it into a brand-new music player.

As an e-book reader: By downloading some e-book reader software, you can turn your old mobile phone into an e-book reader, which is convenient for reading all kinds of e-books.

As a smart home controller: By installing smart home software and applications, the old mobile phone can be turned into a smart home controller, which can control all kinds of smart devices at home.

As a backup mobile phone: the old mobile phone can be used in time when the main mobile phone has problems, and can also be used as an emergency communication tool.

As a projector: By connecting a projector or TV, you can turn an old mobile phone into a small projector, which can play movies, pictures and PPT.

As a remote control: By installing some remote control software, you can turn an old mobile phone into a remote control and remotely control a computer or other equipment.

As a motion recorder: by installing some motion recording software, you can turn your old mobile phone into a motion recorder, which can record your own motion trajectory, steps and calories consumed.

As photographic equipment: Take the old mobile phone as backup photographic equipment, you can take photos, record videos, or use some photographic software for post-processing.

The above are some ways to use idle old mobile phones. You can choose and try them according to your own needs and preferences.