Three makes calling and texting over Wi-Fi easier when customers have no signal

Previously, users could only access the service through the inTouch app, which was a pain to use

Unfortunately, Wi-Fi calling with Three is only available on a select number of smartphones (REUTERS/Albert Gea)

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Three has made its Wi-Fi calling service significantly easier to use, which should help customers cut their monthly mobile bills.

Previously, users could only take advantage of the feature through Three's additional inTouch app, which delivered a less-than-pleasant user experience. However, customers can now make calls and send texts over a Wi-Fi connection without the app.

It’s a handy service, allowing users to both save money and stay in touch with friends and family whenever a Wi-Fi network is available, even when signal is poor or non-existent.

Though Wi-Fi calling has been available for some time, its popularity is now likely to surge, especially amongst London Underground commuters, who can take advantage of the free Virgin Media Wi-Fi connection available at over 250 stations.

Unfortunately, Wi-Fi calling with Three is only available on a select number of handsets at the moment. These are:

• LG G5
• Samsung Galaxy S6 
• Samsung Galaxy S6 Edge
• iPhone 5C
• iPhone 5S
• iPhone 6
• iPhone 6S 
• iPhone SE 
• iPhone 7
• iPhone 7 Plus

Support for the S7 and S7 Edge will arrive in mid-February.

Once Wi-Fi calling has been enabled, the carrier message in the top-left corner of your screen will read 'Three Wi-Fi Call'.

However, any customers with incompatible smartphones needn’t feel too left out, as WhatsApp also offers free messaging and calls over Wi-Fi.