WiFi calling is a mobile feature that allows people to make phone calls and send text messages using a WiFi network instead of a mobile signal. It is especially useful in places where mobile coverage is weak, such as basements, rural areas, or large buildings. This feature provides a practical solution for making calls and sending messages when cellular reception is limited. As technologies like global eSIM become more common, WiFi calling helps travelers and remote workers communicate more easily across different countries.
What is WiFi Calling?
WiFi calling allows users to place and receive phone calls and messages through a WiFi network rather than a mobile carrier’s signal. When WiFi calling is active, the phone uses the internet to send voice data securely through the carrier’s system. People can use their regular phone number and calling app without needing a separate application. It is a simple, built-in way to stay reachable when the mobile network is weak or unavailable.
How Does WiFi Calling Work?
When someone makes a call using WiFi calling, the phone connects to a nearby WiFi network instead of a cell tower. The call is converted into digital data and sent over the internet through the user’s mobile carrier. The carrier then routes the call to the recipient, just like a regular phone call. This process allows people to make and receive calls even in areas with little or no mobile signal, as long as the WiFi connection is stable. The sound quality depends on the strength and speed of the WiFi network.
Advantages and Disadvantages of WiFi Calling
WiFi calling has a number of advantages, but also some limitations that users should be aware of.
Advantages:
WiFi calling allows people to make calls in places with limited mobile signals.
It can reduce the cost of calls when traveling abroad.
It does not require installing a third-party app.
Calls are made using your existing phone number and contact list.
Disadvantages:
WiFi calling may not work with all carriers or in all regions.
Call quality depends on the speed and stability of the WiFi network.
Emergency services may not receive your exact location automatically.
Calls can drop if the WiFi signal becomes unstable.
WiFi Calling vs Traditional Calling
After understanding the main advantages and limitations of WiFi calling, it is also helpful to compare it with traditional cellular calling to see how the two differ in terms of cost, quality, and connection.
Feature | WiFi Calling | Traditional Cellular Calling |
Connection Type | WiFi network | Mobile network |
Ideal For | Areas with weak signal | Areas with strong coverage |
Call Quality | Depends on WiFi strength | Depends on network tower |
Cost | Often included in your plan | May include roaming fees |
Table 1: Key differences between WiFi calling and traditional cellular calling.
Is WiFi Calling free?
Yes, WiFi calling is usually free because it is included in most mobile plans. However, international or roaming calls may still be charged depending on your carrier’s rules. It is a good idea to check your provider’s policy before making calls abroad to understand how WiFi calling affects your billing.
For more information, you can read our guides on Does Using WiFi Count as Roaming and What is Wi-Fi Assist.
How to Enable WiFi Calling on Modern Smartphones
WiFi calling can be turned on in just a few steps on most modern smartphones. The process is slightly different for iPhone and Android devices.
On iPhone
Open Settings on your iPhone.
Tap Cellular, then choose WiFi Calling.
Turn on WiFi Calling on This iPhone.
You may need to enter or confirm your address for emergency services.
If you have multiple SIMs, choose which line to use for WiFi calling. When WiFi calling is active, you will see “WiFi” next to your carrier name in the status bar.
According to Apple’s official support page, WiFi calling allows users to make and receive calls through a WiFi network when mobile service is weak or unavailable [1].
Disclaimer: The steps above are based on Apple’s official support information. The menu names may differ slightly depending on your iOS version or carrier settings.
On Android
Open the Phone app.
Tap More options or Settings.
Select WiFi Calling.
Turn it on and confirm your emergency address if required. If the WiFi calling option does not appear, your carrier may not support it. Some providers may also charge additional fees for WiFi calls, so check with your carrier first.
Google’s official documentation confirms that WiFi calling lets Android users make and receive calls using a WiFi network when mobile coverage is weak or missing [2].
Disclaimer: The instructions above are summarized from Google’s official support materials. The layout of options may vary depending on your Android version, phone model, or carrier.
WiFi Calling and eSIM
WiFi calling works very well together with eSIM technology. Using WiFi calling with an eSIM is ideal for people who travel often or live in areas where mobile networks are limited. Travelers can continue to make and receive calls through WiFi when mobile coverage is poor, as long as a stable internet connection is available.
Using Roamless App for International Calls
Roamless app provides an easy and reliable way to make international calls using an internet connection. This feature allows travelers to stay in contact with people around the world without relying on expensive roaming services.
The app currently supports international calls to over 200 destinations through WiFi or mobile data.
The Roamless in-app calling feature follows a pay-as-you-go model, with rates starting from $0.01 per minute, helping international travelers manage communication costs easily.
Receiving calls will be available soon as part of the “local numbers” feature in a future update.
International calls can be made directly from the Roamless app without switching to another platform.
Learn more about this option on our page for Cheap International Calling.
Disclaimer: The Roamless app already allows users to make international calls over the internet, which works in a similar way to WiFi calling. Although it does not provide carrier-level WiFi calling, its eSIM service ensures a stable connection for both app-based calls and other VoIP communication tools.
Frequently Asked Questions
What happens when WiFi calling is turned on or off?
- When WiFi calling is on, your phone automatically uses WiFi for calls when the mobile signal is weak. If it is off, all calls use your carrier’s mobile network only.
Why is my WiFi calling not working?
- Make sure your carrier supports WiFi calling and that the option is enabled in your phone’s settings. Restart your phone or try connecting to another WiFi network if the issue continues.
Can WiFi calling work without a SIM card?
- No, WiFi calling still requires an active SIM or eSIM profile because it uses your carrier’s network to route calls.
Is WiFi calling free internationally?
- It depends. WiFi calling is often free for local use, but international calls may still count as regular international minutes. Always confirm with your carrier before traveling.
Sources:
[1] https://support.apple.com/en-us/108066
[2] https://support.google.com/phoneapp/answer/2811843?hl=en
Similar readings
Change countries, not eSIMs or plans.
Roamless switches between countries and networks automatically.
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