iPhone Gets AT&T International WiFi Calling Support With iOS 9.3
Alongside the new iPhone and iPad announcement event on Monday, Apple finally released the iOS 9.3 software update. While the most noticeable change is the new Night Shift feature for adjusting color temperatures at night, users on AT&T that make frequent trips overseas and still need to place phone calls will be happy to hear about improved WiFi calling support. The carrier has announced that iOS 9.3 includes support for international WiFi calling, as opposed to just in the US as it was before the update.AT&T customers have started receiving text messages from the carrier notifying them of the changes. Now when overseas, they can make or receive a call to/from the US while on WiFi without being charged long distance fees. The same also applies to calls made to another phone with WiFi calling enabled. Calling an international number, however, will result in the standard rates on a user's plan.
Sadly, the new international feature of WiFi calling is limited to Apple's recent smartphones, including the iPhone 6/6 Plus, iPhone 6s/6s Plus, and the new iPhone SE once it's available, and device need to be running iOS 9.3.
To take advantage of WiFi calling, AT&T users can turn it on in Settings by going to Phone, and then Wi-Fi Calling, and making sure the switch is toggled to on. Once enabled and the iPhone is connected to WiFi, all incoming and outgoing calls will be routed over the internet automatically, with no need for special numbers of access codes.
SOURCE: AT&T