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I turned my old phone into a security camera
Modern security cameras are often Trojan horses for long-term, ongoing subscriptions. This means that without a monthly fee, you lose features like person detection, high-resolution recording, or even the ability to look back at yesterday's footage.
The solution is probably sitting in a junk drawer in your home already: your old Android phone, which has a high-quality sensor, a built-in battery, and a Wi-Fi chip that is likely faster than any $30 camera you can pick up from Amazon. By utilizing this as a security camera and then enabling it to save to your home server, your footage never leaves your front door, providing you with a major privacy win too.
There are no corporate hacks and no unauthorized law enforcement access, just your data on your discs. While casual users might pay $10 a month for Nest or Ring cloud subscriptions, you can achieve a more private, higher-resolution setup using hardware you already own. In the process, you're avoiding the typical cloud apps and using a real-time streaming protocol server. This allows you to treat the phone as a professional-grade IP camera that pipes video directly into your own storage.
The process is quite simple
You don't need to be a tech expert to get started
To get started and turn your phone into a server-compatible camera, you need it to actually broadcast a signal that your server can catch. There are a few different options when it comes to applications that will do this for you. These include IP Webcam and RTSP Camera Server Pro, and both are available on the Play Store. It's worth keeping in mind that these apps don't store video on the phone; they turn the phone into a network node.
To set up, first go into your router settings and assign a static IP to the old phone. This is so the server doesn't lose it after a reboot. After you've done this, you can open the app on the phone and hit the start server button. It will give you a URL. You can tweak the options in the application too. Set the resolution to 1080p, disable the screen to prevent overheating, and then adjust any of the settings you want to. Most of these apps will have a dimmed screen or background mode so you don't have to risk your phone getting too hot or your battery bloating.
Now that the phone is broadcasting, you need a digital video recorder or a DVR to catch the footage and save it. The best way to go about this is the Home Assistant way. Use the generic IP camera integration and then use FreeGate for local AI person detection using the phone's high-resolution feed.
However, if you have an NAS, then you can go down this route too. If you have a Synology or Surveillance Station, just add a new camera using the RTSP URL provided to you when you launched the server on your phone.
If both of these are up your alley, there's also a scrappy way to go about things too. You can use OBS Studio or VLC on an old laptop and then record the network stream directly, and have it saved to a hard drive.
The perks and risks
Ensure you're protecting your hardware
Using an old phone as a camera has a range of perks which might not be available to you or are locked behind paywalls with traditional security cameras. The first is enabling motion detection. Don't set your phone to record 24/7; it can kill the flash storage. Instead, use the server-side software to only save clips when motion is detected. This will increase the longevity of your device.
Alongside this, because the phone has a battery, if a burglar cuts your power, the phone can keep recording. Ensure that you have the settings enabled on whichever application you're using to save footage directly to the phone's memory itself if this does ever happen.
But with benefits also come risks. In order to ensure that your device lasts as long as it can, you have to look after the hardware too. A big risk is that a phone that is plugged in 24/7 can cause a fire hazard due to battery swelling. The fix is to use a smart plug. Set an automation to turn the plug on when the phone hits 20% and then off when the phone hits 80%. This will cycle the battery and extend the device's life by years.
To mount, you can use cheap 3D printed brackets or even a simple Command Strip wall dock. It's much easier to find compatible hardware for phones than it is for a niche security camera that you found on Amazon.
Don't let your old devices sit and collect dust
Put your e-waste to good use
Really and truly, the most powerful camera you already own is probably sitting in the back of your junk drawer somewhere. For $0 in software and using hardware you already own, you've built a security system that outperforms some of the best smart cameras available. You're not locked into a monthly subscription fee just to access your own video feed. It's better for the planet because it saves e-waste. It's better for your wallet, as it saves you a whole lot of cash, and it's significantly better for your privacy.
