In the modern world, access to the Internet has become a basic need, comparable to electricity or water. When you come to a cafe, guests come to your home, or colleagues gather in the office, the first question that usually sounds: “What is your Wi-Fi password?” Dictating a long combination of letters and numbers is tedious and error-prone. Fortunately, the operating system Android offers built-in and convenient tools for solving this task in a matter of seconds.
Previously, the process of transferring an access key required root access or installing specialized software, which was only available to advanced users. Today the situation has changed dramatically. Starting from version Android 10, the generation function QR code for quick connection has become standard for most devices. This allows you to turn your smartphone into a kind of key that opens access to the network for surrounding gadgets without having to manually enter complex characters.
In this article we will analyze in detail all the current methods of transmitting data about a wireless network. We will look at standard system settings, Near Field Communication capabilities (NFC) and third-party utilities. You will learn how to secure your data and avoid common mistakes when setting up sharing. The information will be useful to both owners of budget models and users of flagship lines from Samsung, Xiaomi or Google Pixel.
Standard method via QR code in settings
The easiest and most reliable way to share access is to use the built-in QR code generator. This function is deeply integrated into the system shell and does not require the installation of additional software. First, you need to unlock your device and go to the main settings menu. Find the section responsible for wireless connections, which may be called Network and Internet or Connections depending on the model of your gadget.
Inside this menu, select the item Wi-Fi. A list of available networks will open in front of you, and the one to which you are currently connected will be marked with a lock icon or a check mark. Click on the name of the current network or the gear icon next to it. A screen will open with detailed information about the connection, where at the bottom there is usually a button Share or a QR code icon.
When you click on this button, the system will require confirmation of your identity. You will need to enter PIN code, pattern key or fingerprint. This is a security measure to prevent unauthorized persons from accessing network settings. After successful authentication, a large black and white square code will appear on the screen.
⚠️ Attention: On some smartphone models (for example, older versions of shells MIUI or EMUI) the password text may be hidden under asterisks even after the code is generated. In this case, take a photo of the code with the screen of another device for scanning.
Another user just needs to point the camera of their smartphone at this code. In most modern devices, the scanner is triggered automatically through the “Camera” system application. If automatic recognition does not occur, you can use the built-in scanner in the camera application or any third-party barcode reader. After reading, a notification will appear on the screen asking you to connect to the network.
If the built-in camera does not read the code, try moving the phone a little or wiping the lens. Make sure that there is no protective film on the screen with a strong anti-reflective coating, which can distort the contrast of the code.
Interface features in different Android shells
Although the basic logic of the system is the same, smartphone manufacturers often make changes to the user interface. This may confuse a user who is accustomed to “clean” Android. For example, in devices from Samsung with a shell One UI the (Share) button is located directly under the QR code, and the code itself is displayed immediately after entering the network menu, without the need for additional clicks.
In smartphones Xiaomi, Redmi i Poco with a shell MIUI or HyperOS the process is slightly different. After clicking on the gear icon next to the network name, the QR code appears instantly, but the password is displayed in text only if you click on the eye icon or a special icon under the code. In some firmware versions, the password text is duplicated under the graph for those who do not have the ability to scan.
Devices from Google (series Pixel) and Motorola use an interface as close as possible to the stock one Android. Here the button Share is located at the very bottom of the network settings screen. The color scheme of the code may vary: in a dark theme of the system, the code will be white on a black background, which sometimes improves readability in bright light.
| Manufacturer | Path to settings | Display feature |
|---|---|---|
| Samsung | Settings → Connections → Wi-Fi → Gear | Share button at the bottom, the password is not visible in text |
| Xiaomi / Redmi | Settings → Wi-Fi → Network name | QR code immediately, the password is visible under code in small print |
| Google Pixel | Settings → Network and Internet → Wi-Fi → Gear | The “Share” button is separate, requires biometrics |
| Realme / Oppo | Settings → Wi-Fi → Network name → Share | Bright interface, the ability to save the code to the gallery |
If you don’t find familiar buttons, use the search according to settings. Enter the word “Wi-Fi” or “QR” into the search bar at the top of the settings menu - the system itself will suggest the desired section.
Using Nearby Share and Quick Share
To transfer network settings between two devices based Android there is a more advanced method than simply scanning a code. The technology Nearby Share (in devices Samsung is known as Quick Share) allows you to send connection data directly using a combination of Bluetooth and Wi-Fi Direct. This is especially useful if the screen of the receiving device is damaged or the camera is not working correctly.
To use this method, both smartphones must be next to each other, and the screens of both devices must be unlocked. On the phone that distributes the Internet, go to the Wi-Fi settings, select the desired network and click the “Share” button. In the menu that appears, select the icon Nearby Share or “Send via Quick Share.”
The system will begin searching for available devices within a radius of several meters. As soon as your device's name appears on the receiving smartphone's screen, you must confirm receipt. After confirmation, the network profile, including the SSID password, will be automatically saved in the memory of the new device, and the connection will occur instantly.
⚠️ Attention: For this function to work, Bluetooth must be turned on on both devices and a location (GPS) has been determined. Without permission to access geodata, the device search function is not activated.
This method also saves battery power compared to constantly turning on the access point. The data transfer protocol is encrypted, making it safe for use in public places. However, it is worth considering that older versions Android (below 6.0) may not support this technology.
What to do if the devices do not see each other?
Make sure that the screen is turned on on both phones. Check the visibility settings in the Nearby Share menu - sometimes the mode is “Contacts Only”. In this case, you need to either add the person to your contacts or temporarily switch visibility to “All devices.”
Data transfer via NFC tags and chips
Owners of smartphones with the module NFC (Near Field Communication) can organize even faster data exchange. This method requires advance preparation, but in the long run it is the most elegant solution for the office or home. The essence of the method is to record a Wi-Fi network profile on a special programmable NFC tag.
To implement it, you will need to buy a set of empty NFC stickers or tags in the form of key fobs. They are inexpensive and sold in electronics stores. Next, you need to install an application for recording tags, for example NFC Tools or Trigger. In the application, select the “Write” option and add a new entry of the “Wi-Fi Network” type.
In the window that opens, enter the name of your network (SSID) and password. Select the encryption type (usually WPA/WPA2). After saving the entry, move your phone to a blank NFC tag. The device vibrates to confirm successful recording. Now, to share a password, just ask the guest to touch their NFC-enabled phone to this tag.
- 📱 Versatility: The tag works with any NFC-enabled smartphone, regardless of Android version or brand.
- 🔒 Security: You can record a guest network with limited access on the tag without revealing the password from the main network.
- 🎨 Design: The tag can be hidden in a beautiful keychain, stuck on the refrigerator or built into a photo frame.
It is worth noting that some manufacturers (for example, Huawei in certain regions) may limit the recording of certain types of data on tags for security reasons. In this case, try using third-party applications with extended access rights.
NFC tag is an ideal solution for static places, such as an apartment or office. By setting it up once, you save yourself from having to dictate a password to each new visitor.
Third-party applications for generation and management
If the standard system tools for some reason do not suit you or the interface is too confusing, applications from the store come to the rescue. Google Play. There are many utilities that specialize in managing wireless connections and generating QR codes with advanced functionality. Such apps often allow you not only to show the code, but also to save it as an image.
One of the popular solutions is the application WiFi QR Code Generator. It scans your current connections and creates stylish QR codes that you can customize. You can add your company logo to the center of the code or change its color to match your branding. This is useful for cafes and restaurants, where maintaining visual aesthetics is important.
Another class of applications are password managers with an export function. Managers like Bitwarden or 1Password can store Wi-Fi passwords in encrypted form. Some of them have the function of quickly accessing a QR code directly from the saved password card. This provides a high level of security, since access to the code is protected by the manager's master password.
When using third-party software, carefully study the requested permissions. The code generation app should not require access to your contacts or microphone. Avoid apps with a dubious reputation that promise to “hack” your neighbor’s Wi-Fi - most often they contain adware or viruses.
⚠️ Attention: Never download applications for “signal boosting” or “password hacking” from unverified sites. Use only the official store Google Playwhere applications undergo security checks.
☑️ Application security check
Creating a guest network and measures security
Transferring the password from the main network carries certain risks. Once granted access, the guest is technically on the same local network as you. This means it could theoretically see shared folders, network printers, or other smart home devices. To minimize risks, modern routers allow you to create a separate Guest network (Guest Network).
The guest network runs on the same equipment, but is completely isolated from your main infrastructure. Devices in the guest segment can access the Internet, but cannot interact with your personal gadgets, NAS storage, or CCTV cameras. This can be configured through the router's web interface, usually at 192.168.0.1 or 192.168.1.1.
For the guest network, you can set a separate password and even limit the connection speed or access time. For example, you can set guest Wi-Fi to automatically turn off at night. Once configured, simply generate a QR code specifically for this guest network and share it without fear for the confidentiality of your data.
- 🛡️ Isolation: Guests will not have access to your personal files and smart devices.
- ⏱️ Control: Ability to limit session time or traffic volume for guests.
- 🔄 Changing the password: You can change the guest network password frequently without changing it on all your personal devices.
If your router does not support the guest network function, it is recommended to at least regularly change the password for the main access point. This is especially true after attending events with a large number of people.
How to enter the router settings?
Usually the address is written on a sticker on the bottom of the device. Standard logins are often admin/admin or admin/password. If you changed them and forgot, you will have to reset the router to factory settings using the Reset button.
Frequently asked questions (FAQ)
Can I view the saved password in text on Android 9 and below?
On versions Android below 10 system tools it is impossible to view the password in clear text without root access. The network configuration file (wpa_supplicant.conf) is encrypted. The only way out is to go to the router settings through a browser and look at the password there, or reset the router and set a new one.
Why does the camera not read the QR code from the screen of another phone?
This may happen due to the low brightness of the screen on which the code is displayed, or due to glare. Try increasing the brightness to maximum. Also make sure that you scan the code from a distance of 15-20 cm. If this does not help, take a screenshot of the code and open it in the Google Lens application or gallery.
Is it safe to save a QR code in the gallery and send it to instant messengers?
Yes, it is safe from a technical point of view, but it is not recommended from a privacy point of view. Anyone who accesses this image (screenshot) will be able to connect to your network. Send the code only to specific people in private messages and delete it after use.
What should you do if you receive an “Invalid format” error when scanning?
Most likely, the code is damaged or generated incorrectly. Try refreshing the code page or rebooting your phone. Make sure you are using the standard system generator and not a buggy third party application. Also check if the code is upside down.
Can I share the password if I am not connected to this network myself?
No, the phone can only generate a QR code or transfer data via Nearby Share from the network to which it is currently active. To share access to another network, you need to first connect to it yourself by entering the password manually.