Connecting to Wi-Fi via QR code is one of the most convenient features of modern smartphones. Samsung, which saves time and eliminates errors when manually entering passwords. If you have two devices Samsung (such as phones and tablets), you can instantly transfer network data simply by scanning a code. But how does this work in practice? Which models support this feature? And what if the QR code isn't readable?
In this article, we'll walk you through the connection process step by step, from preparing your devices to troubleshooting potential issues. You'll learn which versions Android And One UI The functions required for operation, how to create a QR code on one phone and scan it on another, and what alternative methods exist if the standard method fails. We'll pay special attention to security nuances and common errors that can prevent a successful connection.
Which Samsung devices support Wi-Fi connection via QR code?
The Wi-Fi QR code generation and scanning feature is not available on all models. SamsungIt depends on the firmware version. One UI and the device's hardware capabilities. Here are the key requirements:
- 📱 Smartphone models: starting from Galaxy S8, Note 8 and newer (including series A, M, F, Z Fold/Flip). Old devices (eg. Galaxy S7 or J-series) do not support this feature.
- 🤖 Android version: not lower Android 10 (With One UI 2.1 and higher). On older versions, the QR code may not be generated or read.
- 🔄 Software updates: Even if the model is supported, make sure both devices have the latest updates. Check this in
Settings → Software Update.
If your device does not meet these requirements, alternative connection methods (for example, via WPS or manual password entry) we will consider at the end of the article.
Preparing devices before connecting
Before scanning the QR code, you need to complete a few simple steps on both phones. This will ensure the process goes smoothly.
⚠️ Attention: If one of your devices has power saving mode enabled or background network access restricted, the QR code may not be generated. Disable these settings in Settings → Device Care → Battery.
Preparation checklist:
☑️ Preparing Samsung devices
Also make sure that:
- 📶 On the device, which is already connected to Wi-Fi (donor), function enabled
Mobile hotspot and modem(although it is not required for a QR code, this will eliminate network conflicts). - 🔒 On the device, which needs to be connected, application restrictions are disabled
Settings(check inSettings → Applications → Settings → Permissions). - 📱 Both phones must be close together (within a radius of 1–2 meters) so that the camera can clearly read the code.
Step-by-step instructions: how to generate a QR code on a Samsung device
Now let's move on to the process itself. We'll start with a device that's already connected to Wi-Fi and will act as the network "donor."
1. Open Settings on the donor phone.
2. Go to the section Connections → Wi-Fi.
3. Find the network you are connected to and tap on its name (not the switch!).
4. In the window that opens, select Share (or QR code, depending on the version One UI).
5. The system will ask for confirmation (for example, a PIN or fingerprint). This is a security measure to prevent unauthorized access to your network.
6. After confirmation, a QR code with network details will appear on the screen. It will be active for 5 minutes — hurry up and scan it!
On some models (eg, Galaxy S22 and newer) the QR code can be saved in Galleryby clicking the save icon in the upper right corner. This is convenient if you want to connect multiple devices later.
How to scan a QR code on a second Samsung phone
Now take the second phone (the one you want to connect to Wi-Fi) and do the following:
1. Open Settings → Connections → Wi-Fi.
2. Click on the icon in the upper right corner Add a network (or QR code, if there is one).
3. Point the camera at the QR code from the first phone. Hold the device steady so the code is within the scanning frame.
4. Wait for the message Connection successfulThe phone will automatically connect to the network without entering a password.
If scanning fails, try:
- 🔦 Increase screen brightness on the donor phone.
- 📸 Clean the camera lens from dirt or fingerprints.
- 🔄 Restart both devices.
What to do if the camera doesn't see the QR code?
If the second phone's camera doesn't recognize the code, try using a third-party scanning app (such as Google Lens). Open it, point it at the QR code, and follow the instructions. After scanning, you'll be redirected to Wi-Fi settings to connect.
Table: Common errors and their solutions
Even if you follow the instructions correctly, problems may still occur. We've compiled the table below to list common issues and troubleshooting steps.
| Error | Possible cause | Solution |
|---|---|---|
| QR code is not generated | Outdated version of One UI | Update software via Settings → Software Update |
| The camera does not scan the code | Dirty lens or poor lighting | Wipe the camera, increase the screen brightness |
| "Unable to connect to the network" | Incorrect data in the QR code or router limitations | Reboot your router and check your MAC filtering settings. |
| The QR code disappears after a few seconds. | Power saving mode is active | Turn it off in Settings → Device Care |
| Connection is interrupted after scanning | IP address conflict on the network | Reboot your router or assign a static IP in its settings. |
⚠️ Attention: If you're using a corporate or public network (e.g., in a hotel or office), connecting via QR code may fail due to additional authentication (portal capture). In this case, you'll need to manually enter your username/password.
Security: Risks of QR Code Connection
While the QR code method is convenient, it's not without its potential risks. Here's what to look out for:
- 🔓 Data interception: If the QR code falls into the hands of third parties (for example, through a screenshot in a messenger), they will be able to connect to your network. Never share the generated code via the internet or social networks.
- 📡 Fake codes: Attackers can create a QR code that redirects to a phishing site. Always check the source of the code (it should only be generated through official settings). Samsung).
- 🔄 Automatic connection: Some devices can save networks from a QR code to the automatic connection list. Disable this feature in
Wi-Fi Settings → Advanced → Auto-connect, if you use public networks.
To minimize risks:
- Generate QR codes only on trusted devices.
- After connecting, delete the code from the scanning history (in
GalleryorGoogle Photos). - Change your Wi-Fi password regularly if you suspect a data leak.
Alternative Wi-Fi Connection Methods on Samsung
If connection via QR code is unavailable for some reason, use one of these methods:
- 🔑 Manual password entry: The classic way is to enter the network name and password manually in
Settings → Wi-Fi. - 🔄 WPS (Wi-Fi Protected Setup): Click the button
WPSon the router, then selectConnect via WPSIn your phone's Wi-Fi settings. This only works if your router supports WPS. - 📱 Smart Switch: Application Samsung Smart Switch allows you to transfer Wi-Fi settings from one device Samsung to another via cable or over the air.
- 📋 Export/import settings: Some firmwares allow you to export your Wi-Fi configuration to a file and import it on another phone (for example, via
Settings → General Settings → Backup).
For devices on Android 12 and newer also have the function available Fast connection (Nearby Share), which automatically transfers Wi-Fi data when two phones are brought together. Samsung to each other.
FAQ: Frequently asked questions about connecting via QR code
Is it possible to connect a Samsung phone to Wi-Fi from a router of another brand (TP-Link, Asus, Keenetic) via a QR code?
Yes, the router brand doesn't matter. The QR code is generated based on the network data (SSID and password), which are universal. The main thing is that the phone Samsung supported the code generation function.
Why doesn't the QR code appear on my Samsung phone, even though it's new?
The feature is probably disabled on your phone. Share Wi-Fi There may be developer settings or regional restrictions (for example, on some Chinese models). Check your settings or update your firmware.
Can I use a QR code to connect non-Samsung devices (iPhone, Xiaomi, laptop)?
Technically yes, but only if the device supports Wi-Fi QR code scanning. For example, iPhone With iOS 11 and newer devices can read such codes via camera. However, you can't generate the code on a non-Samsung device—you can only scan it.
How many times can the same QR code be used?
A single QR code can be scanned an unlimited number of times until it expires (usually 5 minutes) or network information (such as a password) changes. After this, a new code will need to be generated.
Will the QR code work if the Wi-Fi network is not listed as available?
No. The QR code only contains connection information for an existing network. If the network isn't broadcast (for example, the router is turned off or hidden), the connection will fail. First, make sure the network is active.