EZ Sign FAQ & Support Guide

In most cases, the issue is caused by an unstable NFC connection or incorrect positioning between your smartphone and EZ Sign.

Please try the following steps:

1. 1. Remove your smartphone case, MagSafe accessories, and cards.
   2. Move away from metal surfaces such as metal desks or steel shelves.
   3. Place your smartphone firmly against the center of the back of EZ Sign.
   4. Slowly adjust the smartphone position until NFC communication starts.
   5. Keep your smartphone and EZ Sign still until the update is complete and the completion sound plays.
   6. Try updating with a simple text-only design.
   7. If possible, try another smartphone.

Your smartphone may not be detecting EZ Sign, or the NFC connection may not be stable when the update starts.

Please remove any cases or MagSafe accessories, move away from metal surfaces, and place your smartphone firmly against the center of the back of EZ Sign.

We recommend first testing with a simple text-only design.

The NFC connection may have been interrupted during the update process, such as while transferring image data.

Remove any cases or accessories, avoid metal surfaces, and keep your smartphone firmly positioned against the center of the back of EZ Sign while updating.

For 4-color models, the update takes approximately 30 seconds. Even after the progress reaches 100%, do not move your smartphone until the completion message and sound appear.

The NFC connection may be unstable, or EZ Sign may require additional inspection.

Please complete the basic troubleshooting steps first. If the same error occurs with another smartphone, please contact our support team.

Although the app may indicate that the update is complete, the display update may not have finished due to insufficient NFC power or an interrupted final refresh process.

Please remove your phone case, move away from metal surfaces, and keep your smartphone firmly against the center of the back of EZ Sign while trying again.

The final display refresh process may have been interrupted.

This can happen especially with 4-color models, as processing may continue even after the progress reaches 100%.

Please keep your smartphone and EZ Sign still until the completion message and sound appear.

The NFC power supply or communication may not be stable.

Please remove your case, MagSafe accessories, and cards. Move away from metal surfaces and place your smartphone firmly against the center of the back of EZ Sign.

If the issue occurs with another device as well, EZ Sign may require inspection.

Possible causes include changes in your phone case, accessories, metal surfaces, NFC antenna position, update data, or the condition of the device.

Please try the following:

• Remove your phone case and accessories.
• Move away from metal surfaces.
• Try updating with a simple text-only design.

If the issue continues with the same device and data, or also occurs with another smartphone, please contact our support team.

The issue may be caused by a larger data size or image processing requirements, which can make NFC communication less stable.

For better results:

• Use images that match the actual EZ Sign resolution.
• Avoid detailed photos, fine lines, small text, and complex gradients.
• Use simple, high-contrast designs.

Recommended image sizes:

• 4.2 inch: 400 × 300 px
• 2.9 inch: 296 × 128 px
• 2.13 inch: 250 × 122 px

The NFC connection may have been interrupted during the update, or a 4-color template may not have been selected.

Please check:

1. Confirm that your EZ Sign is a 4-color model.
2. Select a 4-color compatible template in the app.
3. Keep your smartphone and EZ Sign still until the update is fully completed.

Then try updating again.

This may be caused by an interrupted NFC connection or the background color settings in the app.

Please check that the background color is not set to "transparent" in the editing menu.

Then remove your phone case, avoid metal surfaces, and try updating again without moving the device until completion.

The NFC connection may have been interrupted during the update.

Please remove cases and accessories, avoid metal surfaces, and place your smartphone firmly against the center of the back of EZ Sign.

If the issue continues, please contact support with a photo of the display.

If EZ Sign cannot be updated using multiple devices, the issue may not be caused only by the operating environment.

Before contacting support, please confirm:

• You are away from metal surfaces.
• Phone cases and accessories have been removed.
• You have tried updating from the back of EZ Sign.
• You have tested with a simple text-only design.

If the issue continues, please contact us for further assistance.

Please compare the units using:

• The same smartphone
• The same design data
• The same update location

If only specific units fail while others work normally, those units may require inspection.

Some Android devices, including Google Pixel models before Pixel 7 and certain AQUOS models, may experience unstable updates depending on NFC antenna placement and power output.

Please try:

• Removing your phone case.
• Moving away from metal surfaces.
• Slowly adjusting the smartphone position around the center area on the back of EZ Sign.

View our tested device list here.

Please note: Devices not listed are not necessarily unsupported.

EZ Sign can be updated using NFC-enabled iPhone and Android smartphones.

For Windows PCs, you will need:

• Windows version of the EZ Sign app
• A commercially available NFC reader

Recommended NFC reader:

SONY RC-S300

Yes. EZ Sign can be updated using NFC-enabled iPhones.

We recommend using iOS 13 or later.

If updating is unstable:

• Remove your phone case and MagSafe accessories.
• Align the top area of your iPhone with the center of the back of EZ Sign.

Yes. EZ Sign can be updated with NFC-equipped Android smartphones.

Because NFC antenna locations and power output vary by model:

• Remove your phone case.
• Slowly adjust the smartphone position around the center of the back of EZ Sign.

Yes. EZ Sign can also be updated from a Windows PC.

You will need:

• Windows version of the EZ Sign app
• A compatible NFC reader

Recommended NFC reader:

SONY RC-S300

Download the EZ Sign app here.

The NFC antenna position differs depending on the smartphone model.

It is usually located near the upper or center area of the back of the device.

Remove your case and accessories, place your smartphone against the center of the back of EZ Sign, and slowly move it until NFC communication starts.

The EZ Sign NFC app is available as a free download from the App Store and Google Play.

A Windows version is also available.

Download the EZ Sign app here.

Some browsers or security software may display a warning during download.

Please always download the app from our official app page.

If you cannot install the app, please provide:

• Warning message
• Windows version
• Security software name

when contacting support.

EZ Sign combines electronic paper technology with NFC power transfer.

When updating the display, EZ Sign receives power and data from a smartphone or NFC reader. After the update is complete, the display continues showing the image without using electricity.

No battery replacement, charging, or wiring is required.

• 2.13 inch: Compact price tags, shelf labels, and small spaces
• 2.9 inch: Price tags, inventory labels, name badges, and compact information displays
• 4.2 inch: Reception areas, meeting rooms, tabletop displays, and POP signage where visibility is important

If you are unsure which size to choose, the 4.2-inch model is often the easiest choice due to its larger display area and versatility.

The approximate update times are:

• 2-color models: 2–5 seconds
• 4-color models: Approximately 30 seconds

Actual times may vary depending on the image content, smartphone performance, and NFC communication conditions.

Please keep your smartphone and EZ Sign still until the completion message and sound appear.

After updating, EZ Sign maintains the displayed image without using power or batteries.

The display will not disappear due to battery depletion or power loss.

However, display quality may gradually change depending on usage environment and aging.

There is no publicly specified maximum number of rewrites.

EZ Sign is designed for long-term use in environments such as stores and offices. However, extremely frequent rewriting over a long period may place stress on the display panel.

E-paper provides a matte, paper-like appearance and is ideal for:

• Text
• Icons
• Simple graphics

It is not recommended for:

• High-quality photos
• Detailed gradients
• Complex images

Recommended image sizes:

• 4.2 inch: 400 × 300 px
• 2.9 inch: 296 × 128 px
• 2.13 inch: 250 × 122 px

All EZ Sign models offer IP65-equivalent dust and water resistance. They are designed to withstand dust and water splashes, but they are not designed for submersion or underwater use.

IP65-rated EZ Sign models are suitable for use in outdoor fixtures and similar applications. However, avoid long-term installation in locations exposed to direct sunlight, high temperatures, freezing temperatures, or heavy snow.

The recommended operating temperature range is approximately 0–50°C (32–122°F).

EZ Sign displays are updated one at a time using a smartphone or NFC reader.

EZ Sign does not currently support remote updates via Wi-Fi or the cloud, or bulk updates for hundreds or thousands of displays.

Yes. You can import PNG or JPEG images into the EZ Sign app and display them on your EZ Sign.

For the best results, we recommend creating your images at the same resolution as the EZ Sign display to minimize distortion or scaling issues.

View Design Templates

Depending on the image, the EZ Sign app may apply image conversion during the upload process, so the displayed image may not look exactly the same as the original.

To minimize differences, we recommend creating a simple image at the native resolution of the EZ Sign display using only the four supported colors:

• Black: RGB (0, 0, 0)
• Red: RGB (255, 0, 0)
• Yellow: RGB (255, 255, 0)
• White: RGB (255, 255, 255)

Use a larger font size and avoid thin fonts, fine lines, and very small text.

For QR codes and small text, leave sufficient whitespace around them and use a simple, uncluttered design to improve readability.

Yes. You can add multiple elements, such as text and images, within the same cell and position them on top of one another.

You can also adjust the size and rotation of each element.

The EZ Sign app can generate one QR code per cell.

If you need multiple QR codes, you can either create a template using multiple cells or create an image containing multiple QR codes in Canva or another design tool and import it into the app.

Yes. Press Enter to add line breaks and display text across multiple lines.

As you add more lines, the text will become smaller. If readability is important, we recommend keeping the number of characters and lines to a minimum.

We currently ship EZ Sign to the United States, Canada, and Mexico.

If you are located outside these countries, please contact us. We may be able to arrange shipping to your location.

Shipping fees are calculated automatically at checkout. Simply enter your shipping address, and the applicable shipping fee will be displayed before you complete your purchase.

Yes. We provide support for bulk purchases, quotations, samples, and business implementation consultations.

For Business Customers

Yes. Quotations and invoices are available for business and bulk purchases.

When contacting our business team, please provide the following information:

• Product name
• Quantity
• Delivery address
• Requested delivery date
• Billing name

This depends on the purchasing platform, order status, condition of the product, and the issue involved. We cannot determine eligibility based on the FAQ alone.

When contacting us, please provide your purchasing platform, order number, product name, number of affected units, and photos or videos showing the condition of the product.

We will assess the issue based on the symptoms, purchase date, usage conditions, number of affected units, and troubleshooting results.

Please prepare the following information:

• Purchasing platform
• Order number
• Product name
• Smartphone or device model
• OS version
• Error message, if any
• Photos or videos of the issue

We will need to verify the contents of your shipment.

Please contact us with the following information:

• Purchasing platform
• Order number
• Products ordered
• Products and quantities received
• Condition of the packaging
• Photos showing the product and the markings on the back of the EZ Sign

First, please check whether the issue is caused by the protective film or dirt on the surface.

If the mark remains in the same position after updating the display, or if it appears to be inside the display, please contact us with your order number, product name, number of affected units, and photos showing the issue.

To help us troubleshoot your issue as quickly as possible, please prepare the following information:

1. Purchasing platform and order number
2. Product name, size, and color
3. 2-color or 4-color model
4. Number of affected units
5. Smartphone model or Windows environment
6. OS version
7. Error message, if any
8. When the issue occurred and the steps that reproduce it
9. A photo of the current display
10. If possible, a video showing the update process and the issue