EE has launched Wi-Fi Calling in the UK meaning customers can continue to call and send texts even without mobile signal. Here's everything you need to know about Wi-Fi Calling on EE including release date, compatible devices and more.

Although Three and O2 offer similar services with InTouch and TuGo, respectively, these require apps and therefore keep calls and texts separate from your regular ones. The same is true of apps like Skype and WhatsApp whereas EE's Wi-Fi Calling is built into the phone so you just use it like nomal.

Update 25 September: Vodafone has announced that it will offer Wi-Fi calling on the Samsung Galaxy S6 and Galaxy S6 Edge. Customers can pre-register with the network here.

What is Wi-Fi Calling?

EE's new Wi-Fi Calling is pretty much what you'd expect it to be. It allows customers to make calls and send text messages even when there is no mobile signal. This means if you're on the London underground or you live in an arear with poor network coverage you can still carry on using your phone like normal.

What is the EE Wi-Fi Calling release date?

EE launched Wi-Fi Calling on 7 April so it is now available with the Microsoft Lumia 640 the first device to get the feature. The official release date for the service on the Samsung Galaxy S6 and Galaxy S6 Edge is 10 April, when the phones go on sale. Also see: Best phones 2015.

Which EE customers get Wi-Fi Calling?

At launch Wi-Fi Calling is available to pay monthly and small business customers. Corporate 4GEE customer will get Wi-Fi Calling this summer.

Which phones work with EE Wi-Fi Calling?

As mentioned above the Lumia 640, Galaxy S6 and Galaxy S6 Edge are the three launch devices but more phones will get the feature in the future. EE has committed to bringing Wi-Fi Calling to the Samsung Galaxy S5 (it will probably come with the Android 5.0 Lollipop update) and has just confirmed some iPhones are compatible – see below.

Note: You need to get your phone from EE to have the correct software in place for Wi-Fi Calling. Getting one SIM-free and putting an EE SIM inside won't add the feature.

Can I get EE Wi-Fi Calling on my iPhone?

It wasn't in the original plan but if you've upgraded your iPhone to iOS 8.3 the new software includes Wi-Fi Calling. It's compatible with iPhone 6, iPhone 6 Plus, iPhone 5s and iPhone 5c.

To setup Wi-Fi Calling on your iPhone go to Setting > Phone > WiFi Calls and switch on 'Allow WiFi Calls'. EE will then give you provision within a day.

Note: If you've installed iOS 8.3 but still can't the Wi-Fi Calling option, try updating the Carrier settings on your phone – it should be 19.1. Head to Settings > General > About.

EE Wi-Fi Calling icon

How do I use EE Wi-Fi Calling?

You're phone from EE should come with a sticker on the box explaining what to do but you can text 'wifi calling' to 150 to set it up. You might also need to head into the settings of the dialler app to switch it on. You'll get a new symbol (see above) at the top of your phone but you may not even know you're using Wi-Fi Calling.

Once you're set up, you simply use your phone as normal – the calls and texts come out of your allowance and don't appear on your bill any different. There's no need to use anything apart from the regular dialler and messages app. Ring or call someone as per usual and if there's no mobile signal, the phone will try and use a Wi-Fi connection instead.

Note that the other person doesn't need Wi-Fi Calling for it to work as only your end of the communication requires Wi-Fi. A quick ping test will check if the connection is good enough to handle the call but, for now, the call will drop if you lose the Wi-Fi connection. The service doesn't yet have the ability to switch from Wi-Fi to mobile network.

If you have any further questions on Wi-Fi Calling let us know in the comments section below.