Before you trade-in or recycle your old phone, consider putting it to good use. With just one simple app, you can turn it into a free and effective indoor security camera.

Using Alfred to turn your old phone into a security camera Alfred is one of the most popular apps for turning phones into security devices.

One of the best app options for setting up your phone as a security camera is Alfred. It's cross-platform, so it doesn't matter if your old phone was an Android phone or iPhone.

We've tested all the best camera phones — these are the ones that rise to the top ...

The trouble is, you only need to read the specification sheet to know that only one camera — the main camera — is worth your time on any of these phones.

Despite its ridiculously long name, my old OnePlus phone is one of the few Android devices without a notch or a camera cutout.

One of the things that’s stopping us from re-using old phones, of course, is the lack of easy access to the peripherals. On the average phone, you’ve got one USB port and that’s it.

Have an old phone and don’t know what to do with it? We've rounded up the top apps that allow you to turn your unused smartphone into a home security device.

Turning your old phone into a security camera is free and only takes a few minutes, but there are limitations you have to be aware of.

Need to keep an eye on something in your house or business, but can't be in two places at once? This free app makes it easy to set up a simple remote camera using any old Android phone.