How to Use Your Phone as a Baby Monitor: Setup & Tips

We've all been there: settling your baby down for a nap in an unfamiliar room and realizing you need a watchful eye. Knowing exactly how to use your phone as a baby monitor is the ultimate parenting quick fix for these situations—whether you are traveling, visiting family, or just waiting for a new camera to arrive in the mail.

Using your phone works incredibly well as a temporary or backup monitor, especially when you can pair two devices to create a parent station and a camera in the baby's room.

The goal for this article is simple: to make your setup good enough to give you peace of mind.

For that, we will walk you through two reliable setup paths, provide a simple 10-minute configuration checklist, and share exactly how to avoid the most common failure points—like sudden battery drains, Wi-Fi drops, and screens falling asleep—so you can actually get some confident rest alongside your baby.

Key takeaways

Repurposing a spare phone or tablet can give you a great temporary monitor, provided you use two devices and have a strong internet connection.
Downloading a dedicated baby monitor app offers much better reliability and security than using a standard video call overnight.
You can prevent middle-of-the-night connection failures by keeping the nursery device plugged in and disabling its screen sleep settings.
Once you outgrow the phone hack, upgrading to a dedicated screen like the Nanit Home 8" Display frees up your personal device while maintaining remote visibility.

Can I use my cell phone as a baby monitor? (what you need before you start)

Yes, but before you begin, you’ll need to gather your tech. The most reliable setups use two devices, so you don't have to leave your current phone in the nursery all night.

Here is a quick checklist of what you need:

Two devices: An old smartphone, tablet, or iPad for the nursery, plus your personal phone to keep with you. Most Apple and Android devices will work in a pinch.
A strong internet connection: Make sure your Wi-Fi network reaches the crib area without dropping.
A charger: You’ll want to keep the nursery device plugged in at all times.
A stable spot: A tripod or secure shelf angled toward your sleeping children.

Once you have the gear ready, you have two main avenues to set everything up:

Option A—Download a baby monitor app (Best for most parents): Dedicated monitor apps are built for this exact purpose. They run continuously in the background, can send app notifications when your baby moves or cries, and handle video feeds more securely.

Option B—The video call method (Fastest in a pinch): You can use FaceTime, Skype, or Zoom to call your second device. This is simple and instant, but it is far more likely to fail overnight due to call drops, incoming texts, or the screen timing out.

If you want fewer surprises overnight and actually want to sleep, use an app specifically designed for monitoring.

Step-by-step: set up your phone baby monitor in 10 minutes

Ready to get started? Here are some quick steps to turn your two devices into a dependable audio and live video feed.

Prep the nursery device: Choose your old phone or tablet, place it in the nursery, and plug it in. Battery drain is a common reason why DIY monitors might fail in the middle of the night.
Download an app: Install your chosen baby monitor app on both devices.
Log in and pair: Create a single account and log in to it on both the parent station and the camera device. This usually links your two devices automatically.
Position the camera safely: Place the nursery device out of your baby's reach, ensuring it has a clear view of the crib. Keep all cords firmly secured and far away from the sleep space.
Configure audio and video basics: Turn on motion detection and sound notifications, if available. Enable night mode or automatically enhanced visibility so you can see your baby clearly in the dark.
Adjust the parent device: Lower your screen brightness to save your eyes at 2 AM. Enable "Do Not Disturb" in your phone settings, but add your monitor app as an exception so you still hear captured sounds and notifications.
Adjust the nursery device: Turn off "Battery Saver" modes, which often cause the camera to shut down to save power. Ensure the app has permission to continuously use the microphone and camera.
Do the 60-second test: Leave the room, lock your screen, and confirm you still get audio and notifications when your baby wakes or makes a noise.

Ideally, you’ll want to test your setup during one practice nap before trusting this setup overnight to catch any unexpected connection problems.

Is there an app I can use as a baby monitor? (Nanit app Live View quick wins)

If you already have a Nanit camera, you can skip the "video call yourself" workaround and use your phone or tablet as the monitor with the Nanit app, which allows you to:

Check the nursery's temperature and humidity at a glance in the live video feed.
Toggle sleep aid tools from the same screen if you also have the Nanit Glo Sound and Light Machine.
Turn on background audio so you can still hear your baby even while your phone is locked or you are checking emails.
Use quick tap controls to show or hide on-screen buttons so you are not constantly fiddling with settings in the dark.
If you have multiple babies, you can quickly switch between different cameras right from Live View.

In short, using the Nanit app’s Live View makes phone monitoring much more intuitive and reliable. And if your biggest pain point is feeling like your current phone is held hostage all night for monitoring, which is exactly what a dedicated screen—like the Nanit Home 8" Display—fixes.

Make it dependable: the no-stress prep checklist

A DIY phone baby monitor is only as good as its reliability. To keep your setup running smoothly through the night, run through this quick checklist.

✓ Power and heat: Keep the nursery device plugged in. Video recording generates heat, so remove thick, heavy phone cases from the old device and ensure it is in a well-ventilated spot to reduce the risk of overheating.
✓ Connection quality: Avoid connection dead zones by doing a quick range test from the room where you will be sleeping or working. If your home Wi-Fi struggles, test your mobile data connection as a backup.
✓ Phone settings that break monitoring: Check your auto-lock and screen sleep behaviors. If your phone goes to sleep, your app might close. Review background app limits and ensure your notification settings allow the app to break through silent modes.

Your goal is boring reliability—if you set this once, it should keep working without you having to babysit the technology.

When does a phone monitor stops being “enough”?

Using a phone can be a fantastic short-term solution, but these temporary setups often start to feel like more work than it is worth before long. Signs that you might need to upgrade your phone hack into a more dedicated solution include:

Your primary phone gets tied up all night, leaving you with a drained battery or missing important morning alarms.
Frequent dropouts, app updates, or lag increase your anxiety during nights rather than easing it.
You have multiple children or rooms to monitor, making toggling between screens difficult.
Multiple caregivers (like a partner, grandparent, or babysitter) need consistent access to monitor your baby without relying on your personal device.
You want advanced features, like tracking your baby's sleeping patterns, receiving developmental insights, and replaying automatically captured video clips, rather than just viewing a basic live feed.

Luckily, a dedicated system like Nanit’s Smart Baby Monitor solves those issues, and gives you the best of both worlds: a dedicated screen like the Nanit Home 8" Display, and the flexibility of checking from your phone when needed by using the app.

How to use your phone as a baby monitor (reliable enough to actually sleep)