Frequently Asked Question

4800 / 4500 / 4600 — WiFi and Ethernet Visual Paging Displays

Last Updated 19 hours ago

4800 / 4500 / 4600 Series — WiFi and Ethernet Visual Paging Displays: Troubleshooting Guide

Models covered: D484A, D464A, D4500, D4520, D4530, D4540, D4560, D4600, D4620, D4630, D4640

Product Manual: D4800/D4500 Series Manual (PDF)

Download and keep this manual handy — it contains detailed setup diagrams, BSSID configuration instructions, and full specification tables referenced throughout this article.

1. Initial WiFi Setup (New or Factory-Reset Display)

Symptom

Display is new or has been reset and needs to be connected to your WiFi network.

Solution

  1. Factory reset the display (if not already in setup mode): Press and hold the button on the back of the display for 5 seconds. The front of the display will count down to confirm the reset.
  2. After the reset, the display will begin broadcasting its own temporary WiFi network called SoftAP (may also appear as MicroframeSetup or SoftAPxxxx).
  3. On your phone or tablet, open the WiFi settings and connect to that SoftAP network.
  4. Force-close the 4500 mobile app, then reopen it. The display should appear in the list of available displays.
  5. Open the display's settings in the app and select your existing WiFi network from the scan list. Enter your network password if required.
  6. Save the settings. The display will stop broadcasting the SoftAP network and attempt to join your main WiFi network.
  7. On your phone or tablet, reconnect to your main WiFi network.
  8. Reopen the app — the display should now appear connected.

Tip: If the display does not retain its configuration after a power cycle, repeat the setup steps above. Settings are saved to non-volatile memory (EEPROM) and should normally persist through power outages. If the problem persists, the unit may be defective — see [Section 10](#10-when-to-contact-support).

2. Display Not Discoverable / App Cannot Find the Display

Symptom

The app cannot find one or more displays, even though the displays appear to be powered on.

Cause

The display's IP address may have changed, the phone may be on a different network, or a network configuration issue is preventing discovery.

Solution

  1. Verify network: Make sure your phone or tablet is connected to the same WiFi network as the displays. The app uses a UDP broadcast (port 30303) for discovery — this will not cross between different subnets.
  2. Tap the Search (magnifying glass) icon in the app to trigger a manual scan. This will find displays and update their IP addresses in the app's list.
  3. Reserve IP addresses: In your router or DHCP server, locate each display's entry and assign it a reserved (static) IP address. This ensures the display always receives the same IP and prevents discovery failures after router reboots.
  4. Add a display manually: In the app, use the "+" button to add a display by its IP address if automatic discovery fails. Note: manual entries will not auto-update if the IP changes, so reserving the IP is strongly recommended.
  5. Ethernet users: The app uses the same UDP discovery mechanism regardless of connection type. If your WiFi and Ethernet segments are on different subnets, automatic discovery will fail. Reserve the display's IP and add it manually via the "+" button as a workaround.
  6. Try the desktop app (PC): If the mobile app cannot discover the display, try the D4500-PC paging app from a wired computer. You can also add the display by IP address in the PC app.

3. Ethernet Display Not Connecting or Not Discoverable

Symptom

A display connected via Ethernet cannot be found on the network or stops communicating intermittently.

Cause

The display may need to be power-cycled after the Ethernet cable is plugged in, or the network switch/infrastructure may be causing intermittent connectivity.

Solution

  1. Plug in the Ethernet cable first, then power-cycle (unplug and replug) the display.
  2. Confirm the display is discoverable using a network scanner such as Fing (available on iOS/Android). The display should appear with a manufacturer listed as "Wiznet."
  3. You can also use the Wiznet configuration utility on a Windows PC to find the display. Download the Wiznet config tool. Note: this tool requires Java 8.
  4. If the display appears in the network scan but the app or board still won't respond, try power-cycling again. If it remains unresponsive, there may be a hardware issue — see [Section 10](#10-when-to-contact-support).
  5. If the display is connected through a PoE-powered switch that goes offline periodically, you may need to unplug and replug the display after the switch recovers to restore communication.

4. Display Intermittently Loses WiFi Connection

Symptom

The display connects to WiFi initially but drops the connection after a period of time, or works for a while and then becomes unreachable.

Cause

The display may be roaming between multiple access points (APs) on the same network, or the WiFi signal may be weak or unstable at the display's location.

Solution

  1. Check antenna: Make sure the antenna on top of the display is fully tightened.
  2. Check signal strength at the display's physical location.
  3. Set a BSSID to lock the display to a specific access point. This is especially important in venues with multiple APs sharing the same network name (SSID).

- The BSSID is typically printed on the bottom of your router or AP.

- In the desktop config app, open the WiFi setup screen. A scan list will appear — select your AP and the BSSID will fill in automatically. Check the BSSID checkbox to enable it.

- In the mobile app (version 3.2.6+), type the BSSID manually into the BSSID field on the WiFi setup screen.

- See page 6 of the manual for detailed BSSID configuration instructions.

  1. Set a static/reserved IP address in your router for the display to prevent connectivity issues caused by IP address changes.
  2. Consider Ethernet for maximum reliability. The D484A and current 4×xx series models support both WiFi and wired Ethernet.

5. App Cannot Communicate with Display (Display Found but Won't Respond)

Symptom

The display is discoverable on the network and responds to pings, but the app cannot send messages to it.

Cause

A PIN mismatch between the app and the display, or an iOS Local Network Access permission issue, is the most common cause.

Solution

  1. Check the PIN: Every display can be assigned a PIN. If a PIN is set on the display, the PIN in the app must match. Verify or clear the PIN in the display settings.
  2. Check iOS Local Network permission:

- Go to Settings → Privacy & Security → Local Network on the iPhone/iPad.

- Make sure the 4500 app has the toggle switched on (green).

- If the app never prompted for permission, try deleting and reinstalling the app, or check if Screen Time/restrictions are blocking the permission.

  1. Try the PC app: Download and run the D4500-PC paging app from a wired computer. Add the display by IP address to verify whether the issue is with the mobile app or the display itself.
  2. Try a different device or platform (e.g., Android vs. iOS) to isolate whether the issue is device-specific.

6. App Not Updating Displayed Numbers in Real Time (Stale Number List)

Symptom

When one device sends a paging number, other devices running the app do not show the updated number list unless the app is force-quit and relaunched.

Cause

This was a known bug in versions of the 4500 mobile app prior to iOS version 3.2.6. The app's background polling mechanism was not correctly refreshing the number list.

Solution

  1. Update the app to the latest version:

- iOS: Version 3.2.6 or later (search "4500" in the App Store — the app name is 4500, icon labeled VP3).

- Android: Update to the latest available version from the Google Play Store.

  1. If the app is up to date and you still see stale numbers, try force-quitting and relaunching the app as a temporary workaround.
  2. Note: By design, the app polls all displays in its list every few seconds to refresh the number list. After sending a page, other devices should update within approximately 5–10 seconds.

7. App Sending to Only One Display Instead of All Displays

Symptom

Pages are only being sent to one display, even though multiple displays are set up in the app.

Cause

The app may be in Single Display Mode, which restricts paging to one display at a time.

Solution

  1. Open the app and go to the Settings tab (bottom right corner).
  2. Locate the Single Display Mode option and make sure it is deselected/off.
  3. After disabling Single Display Mode, sending a page should broadcast to all displays in the app's list simultaneously.
  4. If one display consistently shows as offline (gray) in the display list, tap the Search icon to force a re-scan. Refer to [Section 4](#4-display-intermittently-loses-wifi-connection) for BSSID and IP reservation steps to improve connection consistency.

8. Cannot Join an Open WiFi Network (No Password) — "Failed Password" Error

Symptom

When attempting to connect the display to a WiFi network that has no password, the app returns a "failed password" error.

Cause

A known bug in certain versions of the 4500 mobile app causes the password field validation to fail when the field is left completely empty.

Solution — Workaround

  1. When the app prompts for a WiFi password on an open (passwordless) network:

- Type a space into the password field.

- Delete the space so the field is empty again.

  1. Proceed to save/connect. The app should now successfully join the open network.

Note: This bug has been reported to the app developer and is scheduled to be fixed in a future update.

9. App Behavior — iOS-Specific Issues

9a. App Only Uses Cellular Data Instead of WiFi (Single Device)

Symptom: On one specific iPhone, the app does not use WiFi — it only communicates over cellular data, even though the phone is connected to the correct WiFi network. The app works correctly on all other iPhones.

Solution:

  1. Go to Settings → Cellular (or Mobile Data) on the iPhone.
  2. Scroll down to find the 4500 app in the list and verify that cellular access is not forcing it to bypass WiFi.
  3. Check Settings → Privacy & Security → Local Network and ensure the app has permission (see Section 5, Step 2).
  4. Delete and reinstall the app.
  5. If the problem persists on only that one device and other apps behave strangely as well, the issue is likely with the phone itself. Contact Apple Support or visit an Apple Store for assistance.

9b. App Shows Grey/Blank Screen on iPhone

Symptom: The app displays a grey screen on iPhone.

Status: This has been reported and is under investigation by the app developer. Contact Microframe Support for the latest status.

9c. Keyboard Covers Text Input Field

Symptom: When typing in the app on iOS, the on-screen keyboard covers the input field and the page cannot be scrolled to reveal what was typed.

Status: This UI issue has been reported to the app developer. As a workaround, minimize the keyboard (tap outside the input field or swipe down) to review what you have typed before submitting.

10. When to Contact Support

Contact Microframe Support directly if:

  • The display does not retain its configuration after a power cycle despite successful setup.
  • The display is discoverable on the network (visible in Fing or Wiznet utility) but the display board does not respond to any commands and power-cycling does not help — this may indicate a hardware failure.
  • The display powers on but shows nothing and the issue persists after a factory reset and reconfiguration across multiple networks.
  • You need a USB serial configuration (USB-A to USB-B / printer cable) for a display that cannot be reached over the network.
  • You need to arrange an RMA (return for repair or replacement).
  • You are experiencing an app bug not resolved by updating to the latest version.

Microframe Support resources:

Help Topics
  • Technical Support

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