Here is the Goodcom Android Pos Terminal and Portable Printers frequently asked questions.

Handheld Pos-GT81/GT81P/GT90

Module 1: Model difference

What distinguishes the GT90 series from the GT81/GT81P?

OS: The GT90 and GT81 both run on Android 7, while the GT81P operates on Android 10.

Power Source: The GT81 and GT81P models are powered by both battery and power plug, whereas the GT90 operates solely on battery.

Memory: The GT81 and GT90 models have 1GB RAM + 8GB ROM, while the GT81P boasts 2GB RAM + 16GB ROM.

What distinguishes the GT81 and the GT81P?

OS: The GT81 runs on Android 7, while the GT81P operates on Android 10.

  Memory: The GT81 has 1GB RAM + 8GB ROM, while the GT81P boasts 2GB RAM + 16GB ROM.

Module 2: Printing problem

Which printing methods does GT90/GT81/GT81P support?

These three products support Bluetooth printing, local printing, and cloud printing.

Can GT81/GT81P/GT90 print pictures?

Simply reload the roll paper into the device, and printing will resume.

What if our App doesn't support Bluetooth printing?

If Bluetooth printing isn’t supported, we offer a range of printing SDKs (such as Android Studio, React-Native, Flutter, Xamarin) for software customization. This allows your App to seamlessly integrate printing functionality with our devices.

What specifications of printing paper should I purchase if I run out?

Our standard thermal roll paper measures 57*45 mm, you can purchase paper rolls according to this specification.

Module 3: Customized problem

Does your company offer logo customization services?

Yes, we provide labeling and startup logo customization.

Is logo customization free of charge?

Yes, it’s complimentary, but there’s a minimum order quantity requirement. For GT81/GT81P/GT90, the minimum order quantity is 10 units.

Is it possible to customize the color of the GT81/GT81P/GT90 body?

Certainly, customization of the body color is available, but it is subject to meeting our minimum order quantity requirement.

What software customization options are available?

We primarily offer software customization for ticket printing, including online restaurant tickets, ticket sales, bus tickets, parking tickets, and more.

What information is required for customization requests?

We require detailed specifications outlining the desired customization steps for your App, as well as the functional requirements you aim to achieve.

What is the cost of custom software?

The cost of App customization is determined by the specific steps and functions you require. Our engineers will assess the duration and expenses involved in the customization process.

Will there be additional charges for modifications to customized software?

Minor modifications are typically provided at no extra cost, although the specifics will still be assessed by our engineers.

Module 4: Optional Aspects

What are the available options for GT81/GT81P/GT90?

GT81/GT90 can be equipped with optional camera scanning and NFC functions. GT81P can be equipped with optional camera scanning and card readers (including IC/magnetic card and NFC).

Can GT81/GT81P/GT90 be used for credit card payments?

While we offer the option for card swiping functionality, it’s important to note that these models primarily serve as printing terminals and do not directly interface with banks. To enable credit card payments, you’ll need your own payment network server.

What types of NFC cards do GT81/GT81P/GT90 support?

Supported card types include Mifare S50, Mifare S70, Mifare Ultralight, and CPU Card (Bank).

Module 5: Other questions

Do you offer after-sales support?

Yes, we provide a one-year warranty, and our professional engineering team is available online to assist with any inquiries

What are the product transportation methods and delivery times?

We primarily use express delivery services such as UPS, DHL, FedEx, etc., for shipping the device. The specific delivery time mainly depends on the quantity purchased.

What payment methods are accepted for purchasing devices?

We accept Alibaba Trade Assurance Payment, T/T.

Android Pos-GT90EZ/GT90EZplus/GT90EZpro

Can Google Store run on GT90EZ/GT90EZplus/GT90EZpro?

Certainly, both Google Search and Google Play will function properly.

How many units are required to customize the labeling logo and startup logo?

The minimum order quantity for customizing the labeling logo is 10 units, and for the startup logo, it is 200 units.

How to Clean a Handheld Android POS Printer Cleaning?


  1. Turn off and unplug: Make sure the POS printer is turned off and unplugged.
  2. Remove the battery: If there’s a removable battery, take it out.

Clean the Exterior

  1. Use a soft cloth: Wipe the exterior gently with a clean, soft cloth. If needed, slightly dampen the cloth, but avoid getting any liquid inside the device.

Clean the Screen

  1. Use a screen cleaning cloth: Wipe the screen with a dedicated screen cleaning cloth or lens paper. For stubborn stains, lightly spray the cloth with screen cleaner.

Clean the Print Head and Interior

  1. Open the printer cover: Open the printer cover to expose the print head and paper compartment.
  2. Clean the print head: Gently wipe the print head with a lint-free cloth moistened with a small amount of isopropyl alcohol.
  3. Clean the interior: Use a clean, dry cloth or compressed air to remove paper dust and debris.

Regular Maintenance

  1. Clean regularly: Perform a thorough cleaning every month or two.
  2. Use high-quality consumables: Choose high-quality thermal paper.


  1. Avoid excessive force: Don’t apply too much pressure while cleaning.
  2. Prevent liquid ingress: Avoid getting liquids inside the device.
  3. Follow the user manual: Adhere to the cleaning recommendations provided by the manufacturer.

This will help keep your handheld Android POS printer in good condition and extend its lifespan.


Can I use it for my business directly?

For payment terminals, we solely provide the device, not the app. To utilize it, you’ll need authorization from your local bank and your own payment app.

Does P1000M support 101.1 protocol and 201.1 protocol?

GOODCOM P1000M supports 101.1/201.1 protocol, but it is mainly implemented through your own payment App

Can any card be used at P1000M?

P1000M primarily serves as a financial application for transfer payments, with specific security standards in place. Random cards may not meet these requirements. It necessitates support from the banking system to fulfill functions such as inquiries and payments.

What payments does P1000M support?

P1000M supports swipe card payment (including Magnetic card/IC card/contactless card), QR code payment, and face recognition.

Tip: While these payment methods are supported by the device, they still require implementation through your payment app. For swipe card payment, you’ll need to conduct secondary development of your payment app based on the SDK we provide to utilize these functions on your machine.

Does P1000M support printing receipts?

Certainly. We will provide a printing SDK for this purpose. You’ll only need to conduct secondary development of your payment software based on the SDK we provide to enable printing functionality on our machine.

Mini Bluetooth Printer

What printing formats are supported?

The printer can handle various formats including web pages, PDF files, images, label stickers, and more.

Which systems is it compatible with?

It is compatible with XP, Win7, Win10, Mac, iOS, Android, and the Hongmeng system.