Hi there! I understand that your Zangi Private Messenger app is crashing on your iPhone running iOS 18.5. Let's work together to get this sorted out.

To start, could you tell me a bit more about when the crashes happen? For example, does the app crash right after you open it, during a call or chat, or at some other time?

In the meantime, here are some general troubleshooting steps that can often resolve app crashes on iOS:

1. Force Quit and Relaunch the App
- Swipe up from the bottom of your screen and hold (or double-click the Home button if your iPhone has one) to open the app switcher.
- Find Zangi and swipe it up to close it completely.
- Then, relaunch the app and see if it still crashes.

2. Check for App Updates
- Open the App Store, tap your profile icon at the top right, and scroll down to see if Zangi has an update available.
- If yes, update it, as the latest version often includes bug fixes.

3. Restart Your iPhone
- A simple restart can clear temporary glitches. Hold down the side button and a volume button, slide to power off, wait a few seconds, then turn your phone back on.

4. Reinstall the App
- If the steps above don't help, you could try uninstalling Zangi and then reinstalling it from the App Store. This clears app data that might be corrupted but make sure to back up any important info if possible.

5. Check Storage and Other Apps
- Ensure your iPhone has enough free storage. Sometimes low storage can affect app stability.
- Also, consider if the crashes started after installing another app or a system update.

If you've already tried any of these or if the crashes happen during specific actions, please let me know so I can guide you with more targeted steps.

Are you okay to try these steps?