If you've got an iPhone 6 or iPhone 6 Plus running on AT&T, you may be experiencing more dropped calls that normal, particularly for people in areas where AT&T is working on rolling out VoLTE. Luckily, there's a quick and easy fix you can perform that should stop all your dropped calls in their tracks. Here's how!
How to fix dropped call issues on your AT&T iPhone 6 or 6 Plus
Launch the Settings app.
Tap on Cellular.
Tap on Enable LTE.
Tap on Data Only.
That's all there is to it. Using this setting, you will still enjoy fast data speeds with all the benefits of LTE, but your phone calls will not use LTE, but the older 4G network instead. Since most of the issues seem to be caused by VoLTE enhancements, this should stop dropped calls until the network rollout is complete in your area. We'd recommend trying to enable voice and data every now and again to see if AT&T has resolved the problem. If not, just toggle Data Only back on for a little while longer.
While we've gotten reports from AT&T users specifically in the Chicago area, I'd assume this trick would work for anyone that's having dropped call issues due to LTE enhancements in a given geographical area on any network. So if that sounds like you, give this a try and let me know how it works for you!