How to Share Your WiFi Password with a QR Code on Android

Guests arrive, someone asks for the WiFi, and you start spelling out a password taped to the back of a router: "capital H, seven, lowercase L — no, the letter l." Three attempts later they are still on mobile data. A WiFi QR code turns that whole exchange into a two-second camera scan, and every phone made in the last several years can read one natively.

What a WiFi QR code actually contains

There is no magic and no server involved. A WiFi QR code is a short piece of plain text encoded as a square barcode, in a format standardised across Android and iOS:

WIFI:T:WPA;S:MyNetworkName;P:MySecretPassword;H:false;;

• T — the security type: WPA (covers WPA2 and WPA3), WEP, or nopass for open networks
• S — the SSID, meaning the network name exactly as it is broadcast
• P — the password; leave it empty for an open network
• H — true if the network is hidden, otherwise false

Because it is just text, generation happens entirely on your phone. Nothing is uploaded, and the code works whether or not the generating device is online.

Generating a WiFi QR code in Utility Toolbox

1. Open Utility Toolbox and tap the WiFi QR tool (or type "wifi" into the home-screen search).
2. Enter your network name exactly as it appears in your WiFi list — capitalisation and spaces matter.
3. Type the password. Use the reveal icon to check it before you generate.
4. Choose the security type: WPA/WPA2/WPA3 for almost every home router, WEP only for very old hardware, or None for an open guest network.
5. Tap Generate, then save the image to your gallery or share it straight into a chat.

Scanning it on another phone

On modern Android, open the stock Camera app and point it at the code — a "Connect to network" prompt appears. If the camera does not offer it, open Settings → Network & Internet → Internet, tap the QR icon next to Add network, and scan there. On iPhone, the built-in Camera app handles it directly. Utility Toolbox's QR & Barcode Scanner also reads the code and keeps it in a searchable history.

Where a printed WiFi QR code pays off

• Cafés, salons and clinics — print the code on a small card at the counter instead of writing the password on a chalkboard
• Airbnb and short-term rentals — laminate it inside the welcome folder and stop answering the same message every check-in
• Home offices and guest rooms — one card on the desk covers every visitor
• Events and workshops — put the code on the last slide of your deck
• Family — save the code to a shared album so nobody has to ask again

Safety details most guides skip

A WiFi QR code contains your password in readable form. Anyone who photographs the card can decode it with any scanner app, and anyone on your main network can potentially see other devices on it.

• Use your router's guest network for the code you hand out — it isolates visitors from your printers, NAS and smart-home devices.
• Do not post the code image publicly on social media or a shop website.
• Rotate the guest password after big events, then regenerate the code in seconds.
• For a hidden network, set the hidden flag, otherwise scanning devices may fail to find it.
• Check the SSID for trailing spaces — the single most common reason a scanned code fails to connect.

Troubleshooting a WiFi QR code that will not connect

• Wrong security type selected — WPA3-only routers still work with the WPA value; WEP will not.
• Special characters in the password: semicolons, commas, colons and backslashes must be escaped, which a proper generator handles for you.
• 5 GHz-only network and an older 2.4 GHz-only device — the code is fine, the radio is not.
• Screen brightness too low or the image scaled too small to scan; print at least 3 cm square.