Despite taking a while, Samsung Galaxy S7 and S7 Edge are finally receiving the popular AT&T Wi-Fi calling update. Wi-Fi calling can be easily considered the best feature that any carrier can currently offer for supreme cellular connectivity. The feature will be available to S7 and S7 Edge users in the form of a firmware over-the-air update (FOTA).Both the Galaxy flagship models have already begun receiving the software update, with a changelog that lists the following:

Setup and Transfer

Wi-Fi Calling


AMBS Phase 3

If you haven’t received a notification on your AT&T Samsung Galaxy S7 or S7 Edge yet, go to Settings->About phone->Software update->Check for updates. Since it isn’t a software update, the OTA file should be a smaller size and should take a few minutes to install. You should ensure that the battery is charged more than 80 percent before you install the latest firmware update.AT&T Wi-Fi calling

What is AT&T Wi-Fi Calling feature?

Wi-Fi calling technology basically allows you to make phone calls even on poor cellular connectivity. AT&T switches over to your local Wi-Fi network to enhance the connection quality of the phone call. This feature ensures that your calls do not drop or disconnect even in places where AT&T’s cellular signal is less than stellar.If you're on a family plan or have limited calling minutes per month, Wi-Fi Calling is a great addition for you. The minutes you spend using AT&T Wi-Fi calling on your Galaxy S7 device do not count against the cap on your phone plan. You can make unlimited Wi-Fi calls with your phone number and you won’t get charged a cent for it.Are you among the Galaxy S7 and S7 Edge users who have been patiently waiting for AT&T Wi-Fi calling? Does the feature really add up to the calling quality that the network claims to be? Let us know in the comments section below. 
Source: AndroidGuys

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What's my model number?

There are several ways to locate your model number:

Option 1
On your device, go to Settings, then "About device" and scroll down to "Model number"
Option 2
Often times you can view the model number inside the device, by removing the battery
Option 3
Using Samsung's model/serial number location tool

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