# Logo and wallpaper on Yealink phones

> Put your business logo or a wallpaper on Yealink phone screens, by hand or through auto-provisioning.

- URL: https://kb.voipcloud.online/au/phones-and-apps/yealink/logo-and-wallpaper/
- Section: Phones and apps › Yealink
- Type: guide
- Applies to: All countries
- Last reviewed: 2026-11-09

You can show your business logo or a wallpaper on most Yealink phones. Colour-screen phones use a normal image file. Phones with a black and white screen need a special grayscale `.dob` file. Some models don't support a custom logo at all.

## 1. Check what your phone needs

| Model | File format | Maximum size (pixels) | Colour |
| --- | --- | --- | --- |
| T19P, T19P E2, T21P, T21P E2, T22P, T23, T23G, T23P, T26P, T40G, T40P | .dob | 132 × 64 | 2-colour grayscale |
| T27G | .dob | 240 × 120 | 2-colour grayscale |
| T28P | .dob | 236 × 82 | 2-colour grayscale |
| T30, T30P, T31, T31G, T31P, T41P, T41S, T42G, T42S, T42U, CP860 | .dob | 192 × 64 | 2-colour grayscale |
| T43U, T53, T53W | .dob | 360 × 160 | 2-colour grayscale |
| CP920 | .dob | 248 × 120 | 2-colour grayscale |
| T29, T29G, T33, T46G, T46S, T54S, T54W | .jpg, .png or .bmp | 480 × 272 | 16-bit colour |
| T48G, T48S, T57W | .jpg, .png or .bmp | 800 × 480 | 16-bit colour |
| T52S, EXP50 | .jpg, .png or .bmp | 320 × 240 | 16-bit colour |
| T49G | .jpg, .png or .bmp | 1280 × 800 | 16-bit colour |
| T56A, T58A, VP59 | .jpg, .png or .bmp | 1024 × 600 | 16-bit colour |
| CP960 | .jpg, .png or .bmp | 720 × 1280 | 16-bit colour |

Colour images can be up to 5 MB. Grayscale files for the T22P, T26P and T28P can be up to 100 KB.

## 2. Make the image

Use any image editor, such as Paint.NET or Photoshop.

**Colour screens:**

1. Create a new image at the exact size for your model.
2. Paste your logo in, keeping the canvas size, and position it.
3. Save it as a PNG.

**Black and white screens:**

1. Create a new image at the exact size for your model.
2. Paste your logo in, keeping the canvas size, and position it.
3. Convert it to black and white.
4. Save it as a BMP.
5. Convert the BMP to `.dob` with Yealink's logo conversion tool (`PictureExDemo.exe`). If you don't have the tool, ask the support team. In the tool, click **Add**, choose your BMP, then click **Convert**. The tool usually doesn't show a message when it's done. The `.dob` file is saved in the `adv` folder next to the tool.

## 3. Upload it to the phone

**Note:** Menus can change between versions. If a label is different, check the vendor's own help.

1. Type the phone's IP address into a web browser (press **OK** on the phone to see it) and sign in. The default username and password are both `admin`.
2. Find the logo or wallpaper upload. On older models such as the T28P, it's under **Phone** › **Features** › **Upload Logo**.
3. Click **Browse**, choose your file, click **Upload**, then **Confirm**.

## Or push it with auto-provisioning

For [auto-provisioned](https://kb.voipcloud.online/au/phones-and-apps/yealink/auto-provisioning/) phones, put the image file somewhere the phones can download it from (a web server on your network or online). Then add these lines to **Advanced CFG configuration** in each phone's SIP device in **PBX** › **Devices**, and apply the configuration.

Colour-screen phones (for example T29G, T46G, T46S, T48G, T48S, T52S, T54S, T54W, T57W):

```ini
wallpaper_upload.url = <web address of the folder>/<file name>
phone_setting.backgrounds = <file name>
```

Black and white phones (for example T19P, T21P, T23G, T23P, T27G, T40G, T40P, T41P, T41S, T42G, T42S, T53):

```ini
lcd_logo.url = <web address of the folder>/<file name>.dob
phone_setting.lcd_logo.mode = 2
```

To turn the logo off again, use `phone_setting.lcd_logo.mode = 0`.

## Check it works

Restart the phone. The logo or wallpaper shows on the idle screen.

## Related

- [Advanced auto-provisioning settings](https://kb.voipcloud.online/au/phones-and-apps/yealink/auto-provisioning-advanced/)