BT Wi-Fi calling

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Last update: October 3, 2023
Roams UK
Author: Roams UK
51 people have read this post in the last 12 months

BT mobile offers Wi-Fi calling for its customers; however, there are a few things customers must know before they can get the Wi-Fi calling service, such as having the latest update for their smartphone.

What is BT Mobile Wi-Fi Calling?

Wi-Fi calling allows people to make and receive video and voice calls, using a Wi-Fi connection over the regular cell one.

If a customer is on a call using an online app and she or he is in a building with thick walls, this might cause their phone to lose connection or have a weak signal. Nevertheless, this won't happen if they can automatically connect to the building's wi-fi if the building has wi-fi then it'll automatically reconnect.

It is the same for being on a call using wi-fi, the call will automatically switch from Wi-Fi to a 4G network without having to end the call.

What you need to know for Wi-Fi calling

Before getting all excited about Wi-Fi calling, there are some things that members must do in order to get Wi-Fi calling, such as get a phone that is able to access this service.

Wi-Fi calling comes included on most of the most recent devices. Nevertheless, you must make sure that:

  1. You have an HD Voice capable device, able to use Wi-Fi calling.
  2. You have the Wi-Fi calling option activated.

Apple iPhones and Android smartphones are capable of Wi-Fi calling. In order to learn how to activate Wi-Fi calling, follow these three easy steps:

Activate Wi-Fi calling on iPhone (iOS):

  1. Make sure you have the latest software update – Settings > General > Software Update
  2. Settings – Phone Wi-Fi Calling (make sure you turn on the Wi-Fi calling)
  3. Check the top of your iPhone for the BT Wi-Fi Call icon

Activate Wi-Fi calling on Android:

  1. Go to settings on your phone and make sure that you have the latest software
  2. Wi-Fi Calling option > Call Settings menu
  3. Check at the top of the phone for the BT Wi-Fi Call icon

To help you get an idea of what a classifies as a compatible mobile phone, here is a list of the iPhone and Android mobile phones that are compatible:

Apple iPhone:

  • iPhone 5S
  • iPhone 6 & 6s & 6s Plus
  • iPhone 6 Plus
  • iPhone SE
  • iPhone 7
  • iPhone 7 plus
  • iPhone 8
  • iPhone 8 Plus
  • iPhone X
  • iPhone XR
  • iPhone 11
  • iPhone 11 Pro
  • iPhone 12
  • iPhone 12 Pro
  • iPhone 12 Pro Max


  • Samsung Galaxy S9 & S9+
  • Samsung Galaxy Note S10 & S10+
  • Xiaomi Redmi 7A
  • Xiaomi Redmi 7
  • Xiaomi Redmi 7 Pro
  • Xiaomi Redmi Y3
  • Realme X2 Pro
  • Nokia 6.1 Plus
  • Nokia 7 Plus
  • Nokia 7.1
  • Nokia 8.1
  • Nokia 8 Sirocco
  • Nokia 9 PureView

Does Wi-Fi call cost extra?

The best part about Wi-Fi calling is that it is free and customers don't need to download an app because Wi-Fi calling works behind the scenes, just make sure that the smartphone phone is compatible.

The calls made over Wi-Fi don't use any data allowance of your current plan. However, the Wi-Fi network you are using may be applying charges in order to access it.

Nevertheless, you must have in mind that voice calling consumes around 1 MB/minute of data and 1-minute video call can use up to 6 to 8 MB of data (the actual data usage may vary depending on the device).

Wi-Fi calling is a good way to save money on data plans because clients don't have to use any of their data.

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Roams offers a free information and comparison service, which tries to help anyone find the product that best suits their needs. To ensure that the data presented is correct, extensive market research and product analysis is carried out. Our database of mobile phone and internet rates is updated every day. The content is frequently reviewed by a team of writers with previous experience and/or specific training in telephony.

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Nadia Pérez
Edited and revised por Nadia Pérez