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11 ingenious ways to make the most of your old smartphone

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Did you just buy a new smartphone and are you left not knowing what to do with your old one? Selling or giving away your old device are certainly the most obvious options, but there’s also the option of continuing to use the old device for some other purpose. We have some creative ideas for you!

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Use your smartphone as a remote control

We all know smartphones can be used as remote controls, but how many of us actually use our current phone as a remote? Very few, I’d expect. But if you have an old phone that you don’t need to take everywhere with you, you can use it as a permanent remote by leaving it near your TV in your house. 

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You can control your whole living room with a phone. / © AndroidPIT

You can use it to control iTunes or your whole PC. We have a nice DVD control app below and another remote control for Kodi/XBMC. There’s no shortage of great remote control apps out there, so take a look around your living room to identify your requirements and then hit the Play Store.

Chromecast, the smartphone saver

Chromecast was a surprise hit for Google: a small stick on the TV and an app on your smartphone are enough to put content on your TV. Netflix, Spotify and many other apps support streaming. The trick is that the controlling smartphone does have to display the content, so older smartphones are just as suitable. So you can use your old smartphone at home to get all the services you need.

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You can use your old smartphone to control your Chromecast. / © AndroidPIT

Old smartphone, new Google Home

Let’s get to a more complex project. You might be able to convert an old smartphone into a Google Home. But your old smartphone needs to be able to do quite a bit and shouldn’t be too old. The minimum requirement is that the device can understand “Okay Google” commands, which doesn’t work on every Android device. But that’s not all: you need a speaker to connect the device via cable or Bluetooth.

Google Home Setup on an old smartphone: First, make sure Okay Google detection works. Have a look at the Google Preferences:

Settings > Google > Search > Voice

This is where you can activate Okay Google. Ideally, your phone will already have access to Google Assistant. If it’s not available, you can’t use your old smartphone as a Google Home.

Let’s get on with it: the smartphone should be permanently attached to a charger as well as a speaker, of course. Just connect both the cables and you’re free to get started.

Some apps work fine with this crafty setup, but not all. You’ll have to open some apps manually, and others won’t support all features. You should try and see what works in your particular situation.

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It’s easy to convert an old smartphone into a Google Home. / © AndroidPIT

Use your smartphone as an alarm clock

If your old smartphone doesn’t even have enough RAM to handle some occasional gaming, then you could use it as a bedside clock. Get yourself a nice clock app, such as Timely, and spend a couple bucks on a simple mobile phone stand or go all out on a speaker dock. Don’t forget to enable Daydream mode in the display settings, where you can also transform your phone into a digital picture frame or newscaster.

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Daydream mode offers several nice bedside clock options. / © AndroidPIT

Create a landline telephone

One of our readers Yolande Kimmel gave us a practical tip on how to use an old device as a handset for the local network. There are apps that can help you with this. If this isn’t a convenient option for you, you can easily just install Google Duo and activate multi-device access and simply continue to use your old smartphone at home in the future. Skype, Wire and other messengers will also work.

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Just chatting on the old landline… / © AndroidPIT

Using your Android smartphone as a surveillance camera

Lots of old smartphones have better cameras than many surveillance cameras, so why not repurpose your old smartphone and use it to keep watch over your home? Grab an app such as SalientEye to turn your old Android into an ever-watchful motion detector (which can text message or email you if it senses an intruder), or use the TrackView app to remotely monitor and record video. Home security never cost so little.

Convert it into a baby monitor

Baby monitors are ideal for parents who are expecting or have just had a baby. Unfortunately, they’re not exactly cheap. Some of these devices cost between 50 and 100 dollars. It’d be cheaper, actually, to use an old Android smartphone with the help of a baby monitor app.

The best app we’ve tested is Baby Monitor Annie. The app is easy to install on two smartphones. One device is set as the transmitter and the second as the receiver. One practical feature is that you can also use the camera of the transmitting smartphone to take a look at the baby. But of course, this requires some power. So you’re probably better off leaving the app in audio mode. If your baby makes loud noises, the app automatically informs you.

The Baby Monitor Annie app is free for 30 minutes of test monitoring, and after that there are cheap subscription options: it costs $1.99 for one month and $18.99 for a lifetime account. The app is also available for both Android and iOS, so it isn’t bound to an operating system.

Use it as an MP3 player

Even in the age of streaming services, MP3 files are the most important basic format for getting music on a smartphone. If your old smartphone offers high-end audio output, you can use it as an mp3 player (and also set up your streaming accounts). Android has a wide range of music players and you can even sync your iTunes library with Android if you want.

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You can use old smartphones to listen to music. / 
© AndroidPIT

Convert your Android smartphone into a file server

Do you want access to important data while you’re on the move, but don’t trust cloud services such as Dropbox, Google Drive, etc.? Then just use your old smartphone as a server. You may no longer even need your own NAS. No matter if it’s email, FTP, Dynamic DNS or DLNA – here are some apps that will help you out:

USB modem or Wi-Fi hotspot

Do you often travel and want to give your devices access to the network? And do you also have a SIM card with enough data volume? Then it’s a good idea to downgrade the old smartphone to an internet hotspot. You can set up the Wi-Fi hotspot in the system settings under Wi-Fi networks. Choose a secure password and then off you go.

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Plug it in and off it goes: your old smartphone can supply your laptop with internet. / © AndroidPIT

In some cases it may even be enough to hand over the internet connection of the smartphone to a laptop via cable.

Using a smartphone for two-factor authentication

An online account is only as secure as its two-factor authentication. But where should the second factor be generated? Text messages are one option, but most of the case you choose your main smartphone, but that’s not really a good idea. Instead, it’s a better idea to leave your old phone at home and to activate the authenticator apps from Google, Facebook & co. Yes, you’ll only be able to log into the secured accounts at home, but that means security breaches will only be possible at home as well.

Many of the new uses mentioned here aren’t mutually exclusive. Do you have any other suggestions of ways to use your old smartphone? Let us know in the comments!


This article was updated in July 2018.

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