⚡Quick answer

Yes. To place or receive calls in Heyo you must have both:

1. An active SIM card (the one you registered with Heyo) that has a working voice-calling plan.
2. A basic internet connection—Wi-Fi or mobile data—to route and mask each call. Without either element, the call will fail to connect.

1. Minimum prerequisites

• Active SIM card: The physical SIM card registered with your Heyo account must be present in the device you are using.

• Sufficient calling balance: Your SIM card must have an active calling plan for outbound calls.

• Basic internet connection: Wi-Fi or mobile data is needed to initially route the call for masking purposes.

• Up-to-date Heyo app: Install the latest version from Google Play or the App Store.

2. Step-by-step: Fix common calling issues

1. Check your SIM card and plan
1. Ensure the SIM is properly inserted and active. 
2. Dial your carrier’s balance code (e.g., *123#) or open the carrier app to confirm voice minutes.
2. Verify the correct SIM (dual-SIM phones)
1. Go to device Settings → SIM & Network. 
2. Set the registered SIM as the default line for calls.
3. Confirm your internet connection 
1. Open a browser to test Wi-Fi or mobile data. 
2. On mobile data, make sure Heyo has data permissions in OS settings.

3. Troubleshooting a suspended account

• If your account has been suspended (for example, due to a payment issue or blacklisting), you will be unable to make calls even if your SIM and internet are active.

• The Heyo app shows a “Suspended” banner; follow on-screen steps to update payment and reactivate.

4. What will NOT work

✖️ A phone without the registered SIM inserted.

✖️ A SIM that has no active calling balance.

✖️ An internet-less environment (airplane mode, poor reception).

5. Support options