1. sysadmin2666's Avatar
    I have an HTC One (M7) Android 4.4.2 and Sense 6.0 on T-mobile. I have had the phone for one year. Phone has worked great until now. I received a phone call and could not hear the caller and they could not hear me. I rebooted the phone but still had the same problem. Booted into safe mode and still had the same problem. I did a factory reset on the phone and phone calls worked until I disabled wifi calling. Wifi calling was enabled by default after the reboot, I normally have it disabled. With wifi calling enabled, I can hear callers and callers can hear me. With wifi calling disabled, callers cannot hear me and I cannot hear them. I know that calls are connected. I can bring up the keypad and press numbers and the caller on the other end can hear the touchtones. Speakers and microphone work fine in other apps as well. I have also tried speakerphone and a bluetooth headset. I still cannot hear calls made over cellular network. Any other ideas?
    05-31-2014 04:28 PM
  2. B. Diddy's Avatar
    Welcome to Android Central! Have you talked to T-Mobile? It sounds like either a T-Mobile network problem, or a problem with your cell radio.
    05-31-2014 05:23 PM
  3. IAmSixNine's Avatar
    Have you tried it in another location? IT could be a tower that is causing that problem since the speaker and mic is working as you mentioned.

    Maybe hop in your car and drive away from that tower and see if it works.
    05-31-2014 06:22 PM
  4. PM10's Avatar
    I was experiencing issue with my Galaxy S4 Smartphone Android version 4.4.2, whereas, when I answered the call and I could not hear anything, yet I could tell that the call had connect by the time counter on the call display. I would return the call and noticed that the call was answered, as there was no dialing tone and again the time counter had started, again I could not hear anything. Then I would restart my phone and attempt a call and it would work, but then at the time of initiating the next call I would experience the same issue all over again. The problem persisted time and time again for a period of one month. I turned to various forums to try to troubleshoot the issue and conduct various troubleshooting options all of which did not work. I was almost to the point of resigning to the fact that my last option was to restore the device to factory default setting, when I stumble upon a lone posting that stated that turning off the Google Now option of the device resolved the technical issue associated with calls. As a last resort I tried this option, I turned off the Google Now option and like magic, my phone started to properly work again. Since turning off Google Now my calls are all answered and made without issues and my voice recorder functions were restored. Apparently, Google Now interrupts the voice recorder, whereas, it becomes disabled and interferes with the audio portion of calls received or initiated. I hope that this posting helps relieve some of the frustrations that I experience and endure only because I am a proud owner of a Samsung Smartphone.
    09-22-2014 01:46 PM
  5. myphone2015's Avatar
    I had the same problem. It was very odd, because it happened in the middle of the day, after I'd been using the phone earlier that same day. I was sitting at a coffee shop, and my wife called.....to hear nothing but silence. Same thing on my end. And, that was pretty much the end of my 6 mo old phone. I tried all sorts of things, to no avail. I finally did a Factory Reset, and was able to make one phone call before it was back to the same problem. Like you, my WiFi calling worked, but cellular calls had no sound, on either end. In fact, on outgoing calls, my phone made no noise at all, no dialing, ringing, etc. So, I took it to the T-Mobile store and they're now sending a replacement.

    I'm not excited by the prospect of receiving someone else's refurbished phone, but that's the way it goes, I suppose.
    12-14-2014 03:52 PM
  6. IAmSixNine's Avatar
    I have a friend who contacted me last week about her M7, she also lost the ability to hear anybody on calls.
    She brought it by my office and i tested it, no audio is being passed what so ever.
    I did go into settings and applicatoins, all, Phone, i cleared all that out and for a while it worked but its back now.

    Seems to be an M7 thing.
    12-15-2014 10:32 AM

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