You can delete Three InTouch - Three has finally rolled out native Wi-Fi calls
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News VoWi-Fi
Ericsson Multi-Device VoWi-Fi And HP Aruba Deal Boost Indoor Coverage
Operators will be ale to offer VoWi-Fi on devices without a SIM card, while Ericsson and HP will combine on LTE and Wi-Fi packages for businesses
Vodafone Rolls Out Native VoWi-Fi To Select Handsets
Vodafone enables calls to be made over a Wi-Fi connection for some users
iOS 8.3 Adds Support For EE Wi-Fi Calls
iOS 8.3 enables EE Voice over Wi-Fi (VoWi-Fi). fixes several vulnerabilities and patches enterprise bugs
EE VoWi-Fi To Boost Connectivity For SMBs And Rural Areas
EE starts rolling out VoWi-Fi to compatible handsets with the promise that five million users will be supported by this summer
Ruckus Smart Wi-Fi Update Promises To ‘Master’ VoWi-Fi Reliability
Free software update manages and prioritises voice over Wi-Fi (VoWi-Fi) signals across Smart Wi-Fi infrastructure