IMS Registration Status Not Registered: How To Fix

Personally, I really like the convenience of modern communication, but recently, I encountered a frustrating problem – IMS registration status not registered. It's disheartening when your device refuses to connect, disrupting the flow of calls and messages. However, I found that tackling this issue is manageable with a few simple steps.

Understanding IMS registration

IMS registration is vital for maintaining seamless communication, acting as the linchpin connecting your device to the IP Multimedia Subsystem (IMS). The IP Multimedia Subsystem is a comprehensive architectural framework that enables the delivery of multimedia services over Internet Protocol (IP) networks. This includes services such as voice calls, video calls, messaging, and other multimedia applications.

The IMS serves as a bridge between traditional telecommunication networks and the rapidly evolving realm of IP-based communication. It facilitates the integration of various communication services, providing a standardized and efficient platform for delivering multimedia content. When your device registers with the IMS, it essentially establishes its identity on the network, allowing it to participate in these diverse communication services.

Imagine IMS as the command center orchestrating the delivery of your messages, calls, and multimedia content across different networks. It ensures that your device is recognized and authenticated, paving the way for smooth, interoperable communication. Without a successful IMS registration, your device loses this essential link to the IMS, resulting in the ominous "Not Registered" status.

In essence, IMS registration is the digital handshake that permits your device to tap into the rich array of multimedia services offered by modern communication networks. It ensures that your device is not just connected to the network but is also recognized and authorized to engage in the myriad of communication options available in today's digital landscape.

IMS Registration Status

When faced with the "Not Registered" status, your device essentially loses its ability to connect to the network. To troubleshoot this issue, follow these steps:

Troubleshooting IMS registration issues

We'll unravel a step-by-step guide to troubleshoot IMS registration problems, ensuring your device stays seamlessly connected to the digital communication network. Let's delve into the troubleshooting process to reclaim a smooth communication experience.

Ensure a stable internet connection

One of the fundamental steps in resolving IMS registration issues is verifying the stability of your internet connection. Follow this step-by-step guide to ensure a robust network:

On Android:

  1. Go to "Settings" on your device.
  2. Select "Connections."
  3. Tap on "Mobile Networks."
  4. Confirm your internet connection status.

On iOS:

  1. Navigate to "Settings."
  2. Choose "Cellular."
  3. Tap on "Cellular Data Options."
  4. Verify the strength of your internet connection.

Unstable networks are often a culprit behind registration failures. If the connection is weak or inconsistent, consider troubleshooting your Wi-Fi or mobile data settings. Reconnecting to a stable network can significantly enhance the chances of successful IMS registration. This initial step lays the foundation for a smoother resolution process.

Update device software 

Another critical step in troubleshooting IMS registration issues involves ensuring your device's software is up to date. Outdated software can introduce compatibility issues that hinder the registration process. Follow this step-by-step guide to keep your device's software current:

On Android:

  1. Access "Settings" on your device.
  2. Scroll down and select "Software Update" or "System."
  3. Tap "Download and Install" if an update is available.
  4. Follow on-screen prompts to complete the update.
screenshot of android's system settings

On iOS:

  1. Navigate to "Settings."
  2. Select "General" and then "Software Update."
  3. If an update is available, tap "Download and Install."
  4. Follow the on-screen instructions to finalize the update.
a screenshot of an iphone's settings

Regularly updating your device's software not only enhances performance but also addresses potential compatibility issues that could affect IMS registration. This proactive measure ensures that your device is equipped with the latest features and optimizations, fostering a seamless connection to the communication network.

Reset network settings

When grappling with IMS registration problems, a straightforward yet effective approach involves resetting your device's network settings. This step can often untangle complications and reinstate a smooth registration process. Follow these simple steps to reset network settings:

On Android:

  1. Navigate to "Settings."
  2. Select "System" or "General Management."
  3. Tap on "Reset."
  4. Choose "Reset Network Settings."
  5. Confirm the action and restart your device.

On iOS:

  1. Go to "Settings."
  2. Select "General."
  3. Scroll down and tap "Reset."
  4. Choose "Reset Network Settings."
  5. Confirm the action and restart your device.
woman resetting her network settings

This uncomplicated reset can eradicate potential glitches in network configurations, offering a fresh start to your device's connectivity. It's a quick troubleshoot that often proves effective in resolving IMS registration challenges.

Verify SIM card

A frequently overlooked yet crucial aspect of troubleshooting IMS registration issues involves confirming the status of your SIM card. A misaligned or damaged SIM card can impede the registration process. Follow these steps to verify your SIM card's condition:

On Android and iOS:

  1. Power off your device.
  2. Locate the SIM card tray (usually on the side of the device).
  3. Carefully eject the SIM card tray using the provided tool or a paperclip.
  4. Examine the SIM card for any visible damage or misalignment.
  5. Reinsert the SIM card securely into the tray.
  6. Power on your device and check for improved registration status.

A correctly inserted and undamaged SIM card is essential for establishing a stable connection with the network. This straightforward check ensures that your device's hardware components are in optimal condition, contributing to a successful IMS registration process.

Toggle Airplane Mode on and off

When grappling with network-related issues, toggling Airplane Mode (or Flight Mode) on and off can serve as a swift and effective solution. This simple action helps reset your phone's connection, potentially resolving IMS registration challenges. Follow these steps to toggle Airplane Mode on and off:

On Android or iOS:

  1. Swipe down from the top of your screen to reveal the menu.
  2. Look for the airplane icon, often located in the quick settings or connectivity options.
  3. Tap on the airplane icon to enable Airplane Mode. Wait for about a minute.
  4. Tap the airplane icon again to disable Airplane Mode.
a screenshot of disconnected and airplane mode for an iOS device

Activate the radio and turn on IMS over SMS

For a more intricate approach to IMS registration, activating the radio and turning on IMS over SMS can be a beneficial step. This method involves entering the device information mode to fine-tune your device's settings. Follow the steps below:

  1. Open the Phone App: Navigate to your device's home screen and open the Phone app.
  2. Access the Dial Pad: Tap on the dial pad icon within the Phone app.
  3. Enter Device Information Mode: Input ##4636## using the dial pad. This code initiates access to Service Mode.
  4. Enter Service Mode: In Service Mode, select "Device Information."
  5. Run Ping Test: Click on "Run Ping Test" within Device Information.
  6. Turn Radio Off: After the test completes, locate the "Turn Radio Off" button and click on it.
  7. Enable SMS over IMS: Next, find and click on "Turn SMS over IMS."
  8. Restart Your Device: Restart your device to apply the changes.

This advanced troubleshooting method aims to fine-tune your device's connectivity settings. After completing these steps, check your IMS registration status. If issues persist, proceed with other troubleshooting measures. Remember, this method involves more technical adjustments, and caution is advised while navigating Service Mode.

Reset your APN settings

APN, or Access Point Names, are instrumental in connecting your device to both the mobile network and the internet. Correctly configured APN settings are vital for a smooth IMS registration process. If you're encountering issues, resetting these settings to their default can be a viable solution. Follow these steps:

  1. Open Settings: Unlock your device and navigate to the Settings app.
  2. Access SIM Cards and Mobile Networks: Locate and tap on "SIM cards and Mobile Networks" in the Settings menu.
  3. Select Your Internet-Connected SIM: If your device is dual SIM, choose the SIM card used for internet connectivity.
  4. Navigate to Access Point Names (APN): Click on "Access Point Names" to view and edit your APN settings.
  5. Reset APN Settings: Inside the APN settings, find the "Reset" button and click on it to revert the settings to default.
  6. Restart Your Phone: After resetting the APN settings, restart your device.
  7. Check IMS Registration Status: Once your device reboots, verify the IMS registration status to ensure a successful connection.
woman adjusting her phone's settings

Resetting APN settings is a straightforward yet effective measure to troubleshoot IMS registration issues related to connectivity. If the problem persists, consider exploring additional troubleshooting steps for a comprehensive solution.

Adjusting your preferred network type

At times, your phone's network settings may not align with the SIM card you're using. If your current network type is set to 4G or 5G and you're experiencing issues, it's advisable to modify your preferred network type to 3G or 2G to ensure proper IMS registration.

Follow these steps to change your preferred network mode:

  1. Open Settings on your device.

  2. Navigate to SIM cards and Mobile Networks. If your phone has dual SIM functionality, choose the SIM card used for internet connectivity.

  3. Select the specific SIM card you wish to configure.

  4. Click on Preferred Network Type. Adjust the setting to 3G for optimal network performance. If your IMS registration status still shows as "Not Registered," consider changing the network type to 2G.

By following these steps, you can tailor your network preferences to better suit your SIM card and potentially resolve IMS registration issues.

Manually choose your mobile carrier

By default, your Android device automatically selects a network operator for you. However, manually selecting your network operator can be beneficial in registering your IMS.

To manually change your network operator, follow these steps:

  1. Open the Settings app on your device.

  2. Navigate to the "SIM cards and Mobile Networks" tab. If your phone supports dual SIMs, choose the SIM card used for internet connectivity.

  3. Select the specific SIM card you wish to configure.

  4. Click on "Mobile Networks."

  5. Disable the "Automatically Select Network" button and confirm the action in the dialogue boxes. Turn off automatically select network

  6. Select the network of your choice from the available options.

Your phone will now connect with the chosen carrier. Verify if the IMS registration issue persists on your device.

By manually selecting your mobile carrier, you have greater control over your network settings, potentially resolving IMS registration problems.

Verifying IMS status on Android and iOS

We'll guide you through the process of checking IMS status on both Android and iOS platforms. By delving into these device-specific steps, you can effortlessly confirm the registration status and troubleshoot any issues that may hinder your device's seamless communication experience. Let's explore how to ensure your device is optimally connected to the IP Multimedia Subsystem.

a screenshot with IMS registration status details

For Android:

  1. Unlock your device and navigate to the home screen.
  2. Locate and tap the "Settings" icon, often represented by a gear or cogwheel.
  3. In the Settings menu, find and select "Connections" to access network-related settings.
  4. Within the "Connections" menu, tap on "Mobile Networks" or a similar option based on your device model.
  5. Look for the "IMS Registration Status" or a related term, which may be under "Network Status" or a similar category.
  6. Confirm the IMS registration status; it should ideally display "Registered" to ensure successful integration with the IP Multimedia Subsystem.

This thorough step-by-step guide ensures Android users can effortlessly check their IMS registration status, allowing for quick identification and resolution of any registration issues.

For iOS:

  1. Unlock your iOS device and locate the "Settings" app, recognizable by its gear icon.
  2. Tap on "Settings" to enter the configuration menu.
  3. Scroll down and select "Cellular," denoted by a signal bar icon.
  4. Inside the "Cellular" settings, tap on "Cellular Data Options."
  5. Look for the "IMS Registration Status" or a related term, which might be found under "Cellular Data Network" or a similar category.
  6. Confirm the IMS registration status, ideally displayed as "Registered," ensuring your iOS device is seamlessly integrated with the IP Multimedia Subsystem.

These clear steps empower iOS users to effortlessly check their IMS registration status, enabling them to identify and address any potential issues for an optimal communication experience.

However, I found that not everyone faces the same issue, and solutions may vary based on device models and network providers. If the problem persists, consider contacting your device manufacturer or network carrier for personalized support.

Final thoughts

Resolving IMS registration status not registered is crucial for uninterrupted communication. By following these steps, you can troubleshoot and fix this issue, ensuring your device stays connected for seamless conversations. Don't let registration problems hinder your communication experience – take control and enjoy uninterrupted connectivity.

About the Author Peter K.

Peter K. is an experienced digital marketer with a decade of expertise in driving business growth through innovative strategies. His data-driven approach and deep understanding of SEO, PPC, social media, and content marketing have propelled brands to new heights. With a client-centric mindset, Peter builds strong relationships and aligns strategies with business goals. A sought-after thought leader and speaker, his insights have helped professionals navigate the digital landscape. Trust Peter to elevate your brand and achieve success in the digital era.

Network and security
Network and security
Network and security