Let’s say you are considering a $150 smart screen for your nightstand or kitchenbut the interface feels laggy when you try it. The screen appears faded and is essentially a closed billboard for the manufacturer. Why should you have to see ads in your own home on hardware you own?
The irony here is that you probably have a three year old flagship phone in your drawer that features a 120Hz AMOLED display, a Snapdragon 8 series processor, and a high-resolution camera. All the specs that dwarf the hardware inside a new Echo Show or Google Nest Hub. Dedicated smart displays are inexpensive tablets disguised as speakers. Your old phone is a high-performance computer that, with 10 minutes of setup, can surpass you in speed, privacy, and visual quality.
While companies like Amazon and Google have dominated the kitchen counter with dedicated smart displays, these devices are notoriously underpowered. In 2026, an older flagship phone like a Galaxy S21 or even a Google Pixel 6 isn’t just a budget alternative; It is a superior computing node in almost every measurable way.
A phone is much better
Better specs for free? count on me
So what’s the real hardware gap when comparing an old phone to a display or smart home hub? Most smart displays really lag behind, even compared to phones that are years old.
Firstly, the screen itself: most smart displays use 720p or 800p LCD panels with low maximum brightness, but an older flagship phone may offer 1080p plus AMOLED with infinite contrast (obviously depending on the model). This is perfect for a bedside clock that doesn’t glow in the dark or show strange gray shadows when it’s actually supposed to be off.
The processor itself is also significantly better. The Echo Show 8 uses a mid-range MediaTek chip that struggles with multitasking, but your older phone probably has a high-end Arm SOC that can handle background apps, video calls, and panel updates without breaking a sweat. Think about how many apps you used to run at once when you used your old phone and it probably wasn’t crashing.
Lastly, let’s talk about the camera. Dedicated displays typically have a 5MP or 13MP webcam-quality sensor, but the 50MP main sensor or 12MP front sensor on your old phone offers better HDR, low-light performance, and face tracking.
But even despite all this, the way your phone really shines and wins as a smart home device is the variety of sensors you have available through it. A phone has many sensors, including a GPS, accelerometer, gyroscope, ambient light sensor, and proximity sensor, all built into it.
All of these sensors have a variety of different use cases depending on what you plan to use your phone for and where you’ll keep it. You can use your phone’s proximity sensor to wake up the screen only when you walk near it, or you can use the light sensor to automatically dim your smart lights when the sun comes up. Without purchasing additional Zigbee sensors or different automations on the table, you have access to all of these sensors without having to spend a single extra penny.
Using the Home Assistant Companion AppThe phone can also act as a Bluetooth tracker, telling your home to turn on the office as soon as your smartwatch or headphones are within range of that specific phone.
You don’t need to see more ads.
A phone allows for complete customization
Another factor to consider is that your phone is probably much better when it comes to software implementations as well. When you use your phone, you don’t have to worry about ads. Many screens dedicated to smart homes are increasingly filled with sponsored content and forced recommendations. You can ask Alexa a question and while she gives you the answer you’re looking for, you can follow up with an ad immediately afterwards, or your smart display can show an ad from time to time, like a mini billboard in your own home.
You also get full customization when using a phone. On an Android phone, you choose the user interface. You can use full kiosk browsers or a Home Assistant dashboard to create a 100% custom dashboard, no matter what you want to see. There is also the possibility of running multiple applications at the same time. Let’s say you want to run Spotify, YouTube, your security camera streaming, and a digital photo frame simultaneously. A phone can do that without problems. A Nest Hub will often kill apps in the background to save RAM.
When the power flickers, a Nest Hub turns off, but your old phone has a built-in UPS (that’s your battery). This means that you will remain online. Your alarms still sound and your automation logic remains intact. You don’t have to worry about your phone losing contact with your home.
It is also very easy to mount a phone compared to a bulky screen. You can use a simple MagSafe-style magnetic sticker on the back of your phone and a magnetic holder on your kitchen tiles for a floating look that can still be removed in a second.
A smart screen is not a very good investment
Use the technology you already have
If you need a speaker for a party, buy a dedicated smart speaker, but if you want a real smart display for information, control and intelligence, then your trash is probably actually the treasure. An old phone sitting in the back of a junk drawer can make a much better smart home hub or display than a dedicated version. Better to stop buying underpowered plastic cases and start reclaiming the high-end hardware you already own.
