Hi! I understand you're trying to make a call from your UK iPhone while in India using Mytello over Wi-Fi, but you get a message saying “not taking calls, try later.” Let’s get to the bottom of this so you can connect smoothly.

First, to clarify:
- Are you using the Mytello app specifically for the call?
- Are you set to make the call via Wi-Fi calling mode within the app?
- Is your Wi-Fi connection stable and strong at the location where you're trying to call?

This information will help me guide you accurately.

Assuming you are using the Mytello app and Wi-Fi calling mode, the “not taking calls” message often relates to how Wi-Fi calling functions abroad. Mytello’s Wi-Fi calling feature sometimes faces restrictions or incompatibility issues outside your home country (here, the UK), and India may be one of those regions where Wi-Fi calls don’t route correctly or get blocked by network policies3.

Here’s what you can try step-by-step:

1. Check Call Mode in the Mytello app:
- Open Mytello app.
- Go to settings or call options.
- Ensure call mode is set to Wi-Fi (and not to dial-in or mobile network). The app only supports making calls via Wi-Fi mode in international locations6.

2. Verify Wi-Fi is stable and strong:
- Sometimes weak or unstable Wi-Fi will cause the call attempts to fail.
- Try switching to a different Wi-Fi network or a hotspot if possible.

3. Disable iPhone’s native Wi-Fi calling:
- Go to Settings > Cellular > Wi-Fi Calling.
- Turn off this feature to avoid conflicts between the phone’s built-in Wi-Fi calling and the app.

4. Restart your iPhone:
- Simple restart can clear temporary glitches that might affect app performance.

5. Update the Mytello app:
- Ensure you have the latest version of the app installed from the App Store, as updates often fix international calling issues.

If after these steps the problem still occurs:

- It might be due to country-specific restrictions on Mytello Wi-Fi calling in India.
- You could try using mobile data (if you have local SIM or roaming enabled) instead of Wi-Fi to see if that allows calls.
- Alternatively, contact Mytello support directly from the app or via email at [email protected] for specific account and regional assistance.

Could you please try these steps and let me know which ones you’ve already done or if you encounter any issues during them? That way, I can help further or escalate as needed.

Are you satisfied with the solution I provided so far?