How to Connect a Receipt Printer to Your Phone
Print receipts from the Oja till on a Bluetooth, Wi-Fi or USB receipt printer. Pick the printer, print a test page, and print every sale on its own if you like.

A printed receipt makes a shop look serious, and customers ask for it. The till prints to the small thermal printers sold in every market: Bluetooth printers you carry, Wi-Fi printers on the counter, and USB printers on an Android phone or tablet. Printing works without internet.
Before you start
- The Odogwu or Chairman plan.
- An ESC/POS receipt printer with 58 mm or 80 mm paper. Most market printers are.
- Bluetooth: on Android, pair the printer in your phone's Bluetooth settings first. The PIN is usually 0000 or 1234.
- Wi-Fi: the printer and your phone on the same Wi-Fi.
- USB: an Android phone or tablet, and a USB-C or OTG adapter if you need one.
Open printer setup
In the till, tap the printer at the top. You can also tap ⋯ then Printer. The printer turns green when it is ready to print.

Pick a Bluetooth printer and test it
Choose Bluetooth. Pick your printer from the list and the paper size, 58 mm or 80 mm. Tap Print test page. If you can read it, you are ready.

Or find a Wi-Fi printer
Choose Wi-Fi, then tap Find printers. Oja looks for printers on your Wi-Fi and lists them as Printer at 192.168.1.50. Tap yours. You can also type the address from the printer's settings page and tap Add.
On iPhone, the first time, your phone asks to let Oja find devices on your network. Tap Allow.

Print every receipt on its own
Turn on Print after each sale. The receipt prints as soon as a sale is done, with no extra tap.

Print or print again
After any sale, tap Print receipt. Customer wants another copy? Tap Print again.

Not working?
- Is the printer on, with paper in it the right way up?
- Bluetooth: keep it close to the phone, and turn off Bluetooth on any other phone it is connected to.
- Wi-Fi: if the till says Not on the same Wi-Fi, join the printer's Wi-Fi. Ask whoever set up your router to give the printer a fixed IP address, so it is not lost after a power cut.
- USB: try another cable or adapter. If you tapped Don't allow, unplug the printer, plug it in again and tap Allow.
- Try the other paper size, or turn the printer off and on again.
Try it in the Oja app
Plug in or pair your printer, open the till and print a test page.
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