My partner and I have identical Turbos (how cute!) and have been having this problem Reading the thread, it's clear that there are at least two different difficulties people are having. The phone does not make an audible ring, and the call goes directly to voicemail. There is a "missed call" notification and the call can be retrieved from voice mail. That might be a volume or interruption setting. That's not the problem we have had. The call does not only fail to ring, the phone behaves as if no call came in at all. There is no "missed call," examining "recents" in the dialer app shows nothing at all, and there is no voice mail. This is the problem we have had, as have several in this thread. Adjusting the "sound and notifications" setting will do nothing to remedy this. This bug was completely repeatable. Every single time I called my partner, the call was completely ignored. That made it easy to figure out when we got it fixed. I did a lot of searching on the internet for this problem. The bug seems to be a known issue affecting some. Those complaining on the Verizon message boards and independent Droid boards are not finding a specific resolution, but they suggest these potential cures. I've listed them in my estimated order of likely success: Clear the system cache. Find the specific instructions for your version of the Turbo at http://androidforums.com/threads/droid-turbo-reference-and-tips.879102/#post-6797620 and follow them carefully: it can be tricky. Under Settings > Wireless & Network group > More > Cellular Networks > Preferred Network Type: change from "Global" to LTE/CDMA. (During international travel, you may need to change back to "Global") Change Settings > Advanced Calling "off" and then "on", or try leaving it in the opposite setting from where you found it. Remember to turn off Video Calling, which will eat your data plan alive. Unfortunately, turning this off and leaving it that way will make call audio less clear in many cases. Power the phone off and remove/reinsert the SIM card, which is located inside the volume rocker switch. Settings > System Updates > Check for system updates. If you use Call Forwarding on your main number, dial *73 to cancel it. This will disconnect Google Voice transcriptions from your main number, if you use that feature. Turn off Motorola Actions, which is an app. I'm not sure which actions are supposed to be involved or how to turn them off. Unfortunately, this can mess up the "OK Google Now" feature among others. We each tried steps 1-5 in various orders, testing after each one. Turns out that step 1 seemed to have the best results. That process takes about 20 minutes to complete, but is worth doing periodically anyhow. It's been 10 days and so far the fix has held. Fingers crossed that this is a reliable cure.