1. DarthEldniw's Avatar
    Hi. New to the forum but my own searches online have yielded no results and I'm appealing to the friendly users here. Maybe someone can help me out.

    In the last half hour, this problem has started. I listen to Spotify on the road at work. And as such, I use an auxiliary cord to play music through my vehicle's speakers.

    I can't turn the media volume up once the cord is plugged in. I can turn it down to get the Volume menu popped up. But it will not turn up, either via the volume key or sliding the bar across the screen. My phone simply locks itself, flashes my home screen background, and then the lockscreen shows up.

    I did not have this issue last night in my own vehicle nor with the headphones I listened to music through last night.

    Does this sound familiar to anyone, and does anyone know any sort of troubleshooting steps I could take to fix this? I've already tried restarting the phone and I powered it completely off and left it off for 5 minutes before powering it back up.
    12-07-2016 08:31 AM
  2. B. Diddy's Avatar
    Welcome to Android Central! Was the same aux cable working fine before, or did you just start using the cable and noticed this behavior? Are you able to try a different aux cable?
    12-07-2016 12:18 PM
  3. DarthEldniw's Avatar
    Welcome to Android Central! Was the same aux cable working fine before, or did you just start using the cable and noticed this behavior? Are you able to try a different aux cable?
    I will be able to try one when I finish up at work. This aux cord worked yesterday and the cord in my own vehicle worked before I arrived at work.

    If it helps, I have narrowed it down to the issue only occurring when I have a music app open, i.e. Spotify. When I am on the phone with the headphones connected, the volume keys work fine as expected.
    12-07-2016 01:27 PM
  4. DarthEldniw's Avatar
    I've also noticed it's been clearing my home screen image. It'll do the blacking out and lock my phone, and then I unlock my phone to find the stock MetroPCS screen image as my background.
    12-07-2016 01:33 PM
  5. B. Diddy's Avatar
    Is it only with Spotify? What about the stock Music app, or Google Play Music?
    12-07-2016 01:33 PM
  6. DarthEldniw's Avatar
    Stock app is affected as is YouTube
    12-07-2016 01:38 PM
  7. B. Diddy's Avatar
    See if it happens in Safe Mode as well (which means you'll only be able to test with preinstalled apps, like the stock Music app). https://support.t-mobile.com/docs/DOC-27494
    12-07-2016 02:25 PM
  8. DarthEldniw's Avatar
    See if it happens in Safe Mode as well (which means you'll only be able to test with preinstalled apps, like the stock Music app). https://support.t-mobile.com/docs/DOC-27494
    Unfortunately that did not work. I did have a ZTE software update on Monday. Could that be affecting anything?
    12-07-2016 03:45 PM
  9. B. Diddy's Avatar
    That's very possible. If it's a bug in the update, you'll just have to report it to ZTE and hope they fix it in the next update.
    12-07-2016 03:54 PM
  10. Justin Pickens1's Avatar
    Hi. New to the forum but my own searches online have yielded no results and I'm appealing to the friendly users here. Maybe someone can help me out.

    In the last half hour, this problem has started. I listen to Spotify on the road at work. And as such, I use an auxiliary cord to play music through my vehicle's speakers.

    I can't turn the media volume up once the cord is plugged in. I can turn it down to get the Volume menu popped up. But it will not turn up, either via the volume key or sliding the bar across the screen. My phone simply locks itself, flashes my home screen background, and then the lockscreen shows up.

    I did not have this issue last night in my own vehicle nor with the headphones I listened to music through last night.

    Does this sound familiar to anyone, and does anyone know any sort of troubleshooting steps I could take to fix this? I've already tried restarting the phone and I powered it completely off and left it off for 5 minutes before powering it back up.
    03-06-2017 11:09 AM
  11. Justin Pickens1's Avatar
    I am having the exact same problem and have tried everything I can think of and it's still doing it.it just started this morning.it was working fine last night.if anyone knows how to fix it please help.
    EvalynnGamez likes this.
    03-06-2017 11:11 AM
  12. EvalynnGamez's Avatar
    My phone is having the exact same issue. I'm inclined to believe it's not an issue with the update because mine was doing it before and it is still doing it after the update. If anyone has found out anything I'd really like to get some info it's very frustrating as it happens with headphones, aux cords, & even Bluetooth!
    04-21-2017 12:24 AM

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