Introduction
When you leave your country, the first concern is usually how to stay in touch with family, friends and work without breaking the budget. Wi-Fi Calling (VoWiFi) technology combines the convenience of internet calling with traditional carrier coverage. Pairing it with a eSIM gives you the flexibility of an international data plan without the hassle of a physical card.
This guide, compiled by a senior tech journalist and frequent flyer, shows you step-by-step how to activate and use VoWiFi with eSIM data, guaranteeing free or locally priced calls in over 200 countries.
What is VoWiFi and why does it work well abroad?
VoWiFi allows your mobile to use the Wi-Fi signal to make and receive calls. The operator converts the voice signal into IP data and returns it to the traditional network when it reaches the destination. Thus, if your phone is connected to a stable Wi-Fi network, the call goes over the internet instead of using the local mobile network.
Main advantages:
- No roaming costs: voice is processed through your eSIM data plan.
- Quality comparable to conventional calling, as long as the Wi-Fi is of good quality.
- Compatibility with international and local numbers.
- Works on iPhone
Prepare your eSIM with ILoveEsim
Before you travel, download the ILoveEsim app to your device and create an account. The process is simple:
- Choose your destination. Select the country or region where you will spend most of your stay.
- Select the data plan. ILoveEsim offers prepaid packages including 3GB, 10GB or 50GB, with competitive pricing and no contracts.
- Activates the eSIM. The app generates a QR code that you scan with your mobile camera. The system will install it automatically.
Once installed, verify that the plan is active and that the eSIM icon appears in the status bar. If you use an iPhone, go to Settings > Cellular Data > Add Cellular Data Plan ; if you use Android, go to Settings > Connections > SIM Cards and Data Plans .
Comparison table: ILoveEsim data plans vs. local operators
Country ILoveEsim Plan (GB) ILoveEsim Price (USD) Local rate (USD/GB) Advantage Spain 10 25 0.60 No Roaming Portugal 10 28 0.70 More data for less Argentina 5 18 0.80 4G/5G network access Japan 3 35 1.00 Stable connection Prices may vary by season, but the general rule of thumb is that with ILoveEsim you always pay less than the local roaming rate.
Enable Wi-Fi Calling on your mobile
The next step is to activate the Wi-Fi calling function.
For iPhone
- Opens Configuration.
- Select Phone and then Wi-Fi Calls.
- Activate the Wi-Fi Calls option and, if desired, Show "Wi-Fi Calls" on the lock screen .
For Android
- Go to Configuration and press Mobile Networks or Connections.
- Find the Wi-Fi Calling or Wi-Fi Calling option and activate it.
- Confirm eSIM is selected as default plan for voice.
When you activate the feature, your mobile will display a Wi-Fi Calling icon when connected to the internet.
Steps to make and receive calls
Once VoWiFi is enabled, calls follow the same process as conventional calls. Here are some useful details:
- To call: dial the number as you normally would. If the call is routed over Wi-Fi, you will see the Wi-Fi icon on the screen.
- To receive: when someone calls you, a call notification will appear. Answer like a regular call.
- Quality indicator: If the Wi-Fi signal is weak, the phone will display an alert and ask you to connect to a more stable network.
- Call transfer: you can transfer it to another number or to a voicemail by following the menu options.
In most countries, the rate is calculated as if it were a local call, as the operator converts voice to data within
Optimize data and battery
If your goal is to save data and keep your battery, follow these tips:
- Enable “Data Saving Mode”: in Wi-Fi settings, limits background data usage.
- Turn off auto-sync: allows apps to download content only when they need to.
- Use Wi-Fi Calling only when the signal is stable. If the Wi-Fi is unstable, the call may be degraded.
- On the battery, turn on low-power mode. Some versions of Android allow disabling “Data Saving Mode” for Wi-Fi calls.
- If your device allows, keep the screen off during the call to save power.
Important Warning
Avoid using Wi-Fi on public networks without VPNs. Voice data can be intercepted if not encrypted. ILoveEsim doesn't offer a VPN, but you can install one you trust for added security.
This step is essential if you are going to use HotSpot from hotels, cafes or airports.
Final Tricks and Recommendations
- Check local coverage. Before you leave, check to see if the hotel or accommodation offers high-speed Wi-Fi. A 50 Mbps connection is usually sufficient.
- Test before leaving. Make a test call when you arrive at your destination to make sure the service is working.
- Update the firmware. Keep your device up to date; newer versions usually improve VoWiFi support.
- Use the ILoveEsim app to monitor data. In the data section, you can view real-time consumption and trigger limit alerts.
- If the call fails. Switch to the traditional mobile network (if coverage allows) and try again.
FAQ
1. Can I use Wi-Fi Calling with an ILoveEsim eSIM in any country?
Most global operators allow VoWiFi, but it is always advisable to check in the ILoveEsim app that the plan you have chosen is compatible with the local network.
2. How much will an international call using VoWiFi cost me?
If your data plan includes unlimited minutes or the operator converts the call to local price, the cost will be minimal or zero. Refer to the comparison table for your destination.
3. What if Wi-Fi goes down during the call?
The call will be disconnected and in most cases automatically resumed when the Wi-Fi signal is recovered. If coverage is intermittent, the call may end.
4. Do I need a local phone number to use VoWiFi?
No. You can use your source number. The operator manages the connection through its network.
5. Is it safe to use VoWiFi for work calls?
As long as the Wi-Fi network is private and encrypted, the calls are secure. For peace of mind, consider using a VPN.
With these steps and recommendations, your international calling experience will be seamless, inexpensive, and no surprises. Have a great trip and stay connected!