lightning to hdmi problems on iPhone 14

There are several potential reasons why your Apple HDMI to Lightning adapter is not connecting as it used to, with your TV when. Here are some troubleshooting steps to help you identify and resolve the issue:

1. Ensure that the HDMI cable you are using is working correctly and firmly connected to both the HDMI port on your TV and the Apple HDMI to Lightning adapter. Also, verify that your TV is set to the correct HDMI input source where you have connected the adapter. Try Lightning Digital AV Adapter
2. Check the Apple HDMI to Lightning adapter for any visible damage or debris that might be obstructing the connection. Also, examine the Lightning port on your iPhone 13 for any dust, lint, or debris that could be preventing a proper connection. If necessary, gently clean the port using a soft brush or compressed air.
3. Attempt to connect the adapter to a different HDMI port on your TV or try using the adapter with another TV. This will help determine if the issue is with the adapter, the TV, or the specific HDMI port.
4. Search for accessories that have completed MFi certification. Once an accessory has completed MFi certification requirements and is reported to Apple as sold/distributed, it will be searchable in our public database of authorized Lightning, headset, charging, iAP-enabled, and Find My network-enabled accessories.
5. Ensure that the HDMI to Lightning adapter you are using is compatible with the iPhone 13. Sometimes, older adapters may not work with newer iPhone models. Identify counterfeit or uncertified Lightning connector ...
6. Some apps and content, especially those with DRM (Digital Rights Management) protection, may not be allowed to be mirrored to an external display via HDMI. Make sure you are attempting to display content that supports external output.
7. Sometimes, a simple restart can resolve temporary software glitches. Turn off your iPhone, wait for a few seconds, and then turn it back on.
   1. Restart the device. That's it.
   2. Still not solved --> Force restart iPhone - Apple Support
8. If the issue persists, you can try resetting all settings on your iPhone. This will not erase your data but will reset all personalized settings to their default values. Go to Settings > General > Transfer & Reset > Reset > Reset All Settings and confirm the action. Note that you will need to reconfigure your settings afterward. All settings—including network settings, the keyboard dictionary, the Home screen layout, location settings, privacy settings, and Apple Pay cards—are removed or reset to their defaults. No data or media are deleted.
   1. Reset All Settings: Return iPhone settings to their defaults - Apple Support:- Return iPhone settings to their defaults
   2. You can return settings to their defaults without erasing your content.
   3. If you want to save your settings, back up your iPhone before returning them to their defaults. For example, if you’re trying to solve a problem but returning settings to their defaults doesn’t help, you might want to restore your previous settings from a backup.
9. Make sure you have the latest updates installed.
   1. Update Over-the-Air (OTA) —> Update your iPhone or iPad - Apple Support (IN)
   2. Update using iTunes/Finder —> Update your iPhone, iPad, or iPod touch - Apple Support (IN)

Here are some additional troubleshooting tips that you can try:

• Make sure that the TV and iPhone are both HDCP compliant. HDCP is a digital rights management technology that is used to protect copyrighted content. If the TV or iPhone is not HDCP compliant, you may not be able to get sound.
• Make sure that the app that you are using to watch the movie supports HDMI output. Not all apps support HDMI output, so you may need to try a different app.
• If you are using a third-party HDMI adapter, make sure that it is compatible with your iPhone and TV. Not all HDMI adapters are created equal, so it is important to make sure that you are using one that is compatible with your devices. Lightning Digital AV Adapter

If none of the above steps resolve the issue, it is recommended to reach out to Apple Support or visit an authorized service center for further assistance. They can provide specific guidance based on your device model and iOS version.

Leading TV manufacturers are integrating AirPlay 2 directly into their TVs, so now you can effortlessly share or mirror almost anything from your iOS device or Mac directly to your AirPlay 2–enabled smart TV. You can even play music on the TV and sync it with other AirPlay 2–compatible speakers anywhere in your home.

See all AirPlay 2–enabled smart TVs

If you find your device in the link provided above then --> Use AirPlay to stream video or mirror the screen of your ...

This user has asolution --> AirPlay not connecting to Samsung Series … - Apple Community

See the pic below (Airplay on Samsung 4 Series)