> ## Documentation Index
> Fetch the complete documentation index at: https://docs.hitpayapp.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Sunmi V3 (All-in-One)

> Instructions on how to set up and use the Sunmi V3 terminal.

## Overview

**Sunmi V3 (HitPay All-in-One)** is a comprehensive point-of-sale solution designed for businesses seeking mobility and a feature-rich solution. This standalone terminal offers integrated card payments, in-built printing capabilities, and cellular connectivity.

![Sunmi V3](https://mintcdn.com/hitpay/PmXByZo0OdaFaQII/images/readers/sunmi-v3.png?fit=max\&auto=format\&n=PmXByZo0OdaFaQII\&q=85\&s=fb63eebf7dbb21550d2c17ed0d7111ad)

## Steps to set up Sunmi V3

1. Power on the Sunmi V3 using the side power key.
2. Insert a SIM card or connect to a Wi-Fi network.
3. Sign in to the **Google Play Store**.\
   \[!NOTE] You may use your business Gmail account or a shared account for easier management.
4. In the Sunmi App Store or Play Store, search for the **HitPay App (blue logo)**.\
   \[!NOTE] [App Download Link](https://play.google.com/store/apps/details?id=com.hit_pay.hitpay\&hl=en_SG\&gl=US\&pli=1)
5. Log in using your HitPay credentials.
6. Enable Bluetooth and Location.
7. Wait for automatic pairing — the HitPay app will show **Connected** once successful.
8. You can now accept payments through **Quick Sale** or **Products**, choosing **Tap to Pay** or **Card Terminal** when processing cards.

Refer to this [setup video](https://www.youtube.com/shorts/WM_x_8muCOQ).

> [!NOTE]
>
> Sunmi V3 uses **58 mm × 40 mm** printer rolls

## Setting up HitPay POS Card Terminal

1. Go to **Settings > Terminal**.
2. Allow location permissions.
3. Wait for the terminal to connect.
4. When you see **Connected**, tap **Done**.

> [!WARNING]
>
> Keep your Sunmi V3 on auto-update to ensure optimal performance and latest fixes.

## Connecting the HitPay POS Card Terminal to Internet

> **Connect via Wi-Fi**
>
> 1. Go to **Settings > Network & Internet** (or **Connection**).
> 2. Select **Wi-Fi** and toggle it on.
> 3. Choose your preferred network from the list.
> 4. Enter the Wi-Fi password if prompted.
> 5. Once connected, return to the HitPay app.

> **Connect via SIM Card**
>
> SIM cards should be nano sized. You can test the SIM card with your mobile phone first to make sure it is working before inserting it into the terminal.
>
> If your SIM card does not auto connect to Cellular data (e.g. SIMBA), please follow the following steps to connect:
>
> 1. Go to **Settings > Network & Internet** (or **Connection**).
> 2. Go to **Mobile Data**, select your SIM.
> 3. Select **Access Point Names (APN)**.
> 4. Tap the menu (three dots) and choose **New APN** or tap **(+) Add New APN**.
> 5. In the **Name** field, type "TPG".
> 6. In the **APN** field, type "TPG".
> 7. Leave other fields blank unless you are instructed otherwise.
> 8. If prompted, enter `default,mms,supl` in the **APN type** field.
> 9. Click the three dots on the top right, and **Save** the new APN.

## Troubleshooting Tips

> **My printer flap won't close properly**
>
> Gently pull it up and push it fully left before closing.

> **How do I personalize receipts?**
>
> Go to **Settings > Edit Business Details > Receipt Customization**.

> **The app is frozen**
>
> Close all apps and reopen HitPay.

> **How do I know a payment went through?**
>
> Wait for the green tick and print prompt after card tap.

> **Terminal keeps reconnecting**
>
> Wait 5–10 seconds. If it continues > 30 seconds, go to **Settings > Terminal**, select your terminal number, then tap **Done**.

> **What printer rolls are compatible?**
>
> * Width : 58 mm
> * Diameter : 40 mm max\
>   Available online (Shopee, Lazada, Popular bookstores, etc.)

<Snippet file="terminal-refund-faq.mdx" />


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