How to use your old smartphone as a smart home device? Only 6 ways (with tools needed, cost, and pros & cons) 📱🏠

Last updated: April 28, 2026

We’ve all been there—digging through a drawer and finding an old smartphone, its screen covered in dust, battery long dead. Instead of tossing it or letting it collect more grime, what if you could turn it into a useful part of your smart home? Let’s explore 6 practical ways to repurpose that old device, complete with what you need, how much it costs, and the ups and downs of each option.

6 Ways to Repurpose Your Old Phone as a Smart Home Device

Each method below turns your old phone into a functional tool. Here’s a quick comparison to help you pick the right one:

MethodTools NeededCostProsCons
Security CameraOld phone, charger, mountFree (app) + $5-10 (mount)Easy setup, affordable, real-time monitoringRequires Wi-Fi, battery drains without charging
Smart Home HubOld phone, Wi-FiFreeCentralizes control of smart devicesSlower than dedicated hubs, may lack advanced features
Media ControllerOld phone, Wi-Fi/BluetoothFreeConvenient remote for TV/stereoDepends on device compatibility
Baby/Pet MonitorOld phone, charger, mountFree (basic) + $5-10 (premium app)Cheaper than dedicated monitors, portableNeeds Wi-Fi, screen may be small
Digital Photo FrameOld phone, charger, standFreePersonalized slideshows, eco-friendlyScreen size limits visibility from far
Weather StationOld phone, Wi-FiFreeReal-time updates, customizable alertsLess accurate than dedicated weather stations

1. Security Camera

Apps like AlfredCamera or IP Webcam turn your old phone into a wireless security camera. Just download the app, set it up as a camera on your old phone, and use your current phone as the viewer. You’ll need a charger to keep it running and a mount to position it (like a suction cup or wall bracket).

2. Smart Home Hub

If your old phone supports Google Home or Alexa apps, you can use it to control smart lights, thermostats, and plugs. It’s a budget-friendly alternative to a dedicated hub—no extra hardware needed, just Wi-Fi.

3. Media Controller

Use your old phone as a remote for your TV (Roku app), stereo (Spotify Connect), or streaming devices. It’s perfect if you lose your regular remote or want a more intuitive interface.

4. Baby/Pet Monitor

Apps like Baby Monitor 3G let you watch your little one or pet from anywhere. Place the old phone in their room, connect to Wi-Fi, and view the feed on your current device. Add a mount to angle it just right.

5. Digital Photo Frame

Load your favorite photos onto the old phone and use apps like Google Photos to run a slideshow. Prop it up on a stand, plug it in, and enjoy a rotating display of memories.

6. Weather Station

Apps like Weather Underground give you real-time weather updates, forecasts, and alerts. Leave the old phone on a countertop to keep track of the weather without cluttering your current device.

“Waste not, want not.” — English Proverb

This age-old saying rings true here. Repurposing your old phone keeps it out of landfills and saves you from buying new smart home gadgets. Every small reuse helps reduce electronic waste, which is a growing environmental issue.

Take Sarah, a busy mom who found her old Galaxy S8 in a closet. She downloaded the Baby Monitor 3G app, bought an $8 adjustable mount, and placed the phone in her baby’s nursery. Now, she can check on her little one from her current phone while cooking or working in another room. No need to spend $150 on a dedicated baby monitor—her old phone did the trick.

Common Question: Can I repurpose a broken old phone?

Q: My old phone has a cracked screen—can I still use it for smart home tasks?
A: Yes! As long as the screen is still functional (you can see and tap it), most methods work. If the screen is completely dead but the phone still powers on, you could use it as a headless device (like a weather station running in the background) if you set it up beforehand. For cracked screens, consider a screen protector to prevent further damage.

Repurposing your old phone is a win-win—you save money, reduce waste, and get a new smart home tool. Pick the method that fits your needs, grab your old device, and give it a second life.

Comments

MiaB2026-04-28

This article is such a lifesaver! I’ve been hoarding my old Android for ages, so I’m excited to try the security camera trick. Do any of these methods require constant Wi-Fi to work?

Jake_20242026-04-27

Great tips! I turned my old iPhone into a smart photo frame last week using the app mentioned, and it’s been a hit with my family. The only downside was setting up the auto-rotate feature, but it’s totally worth it.

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