I've had this phone for around two years, and I've been experiencing this problem for maybe 6 months. I see that many people had the same problem where you can't hear anything during calls and the receiver can't hear you either. It says it's calling and it connects, but no sound whatsoever. I also see that there's not really an effective solution to this as far as I can see. I've tried everything I saw online, but still nothing. I got it to work once or twice but it would stop working right after.Wi-Fi calling works fine, but I don't have access to Wi-Fi at all times, and that's why I have a cellphone. To communicate without Wi-Fi. Calls on other apps like Facebook Messenger works just fine.
I'm just getting very frustrated because I get job related calls and if I'm not connected to Wi-Fi, I miss the call.Please help.
Thanks so much for reaching out!
Is this happening everywhere, and you are unable to make calls from network anywhere you are?
Correct. The only way I can use my phone to call people is when I'm connected to Wi-Fi.
Thanks for that information. The next step is checking your Accessibility settings and making sure they're turned off. It may be a little different depending on your phone, but generally can do this by going to Menu > Settings > Accessibility > Hearing > Turn off all sounds. I'd like to see if the audio works when using another phone. If it does, we'd need to reset the S 4 to fix this.
Still no sound.
Okay, well thanks for checking. Is this happening when you're at a specific address? We may need to reset the phone completely if it's happening everywhere.
Yes. Regular calls do not work anywhere, whatsoever. Only on WiFi.
I'm hesitant to reset my phone because I see so many people have already tried and the issue still continues...
I get your hesitation. We'd just like make sure there's nothing on the phone causing this. Are you using the standard calling app or another calling application?
I'm using the standard calling app that comes with the phone. As shown above, calls using apps like Facebook Messenger works just fine. But that's data that I'm using up if I don't have WiFi and have to make a call.
Calls over apps like that will be on data, it seems like the issue you are having is with the voice network itself.
Do you have another SIM to try your phone in?
Just wanted to check in
This just happened to my M919 a few weeks ago. Voice call audio works via bluetooth ONLY but not via phone speakers or wired headset. Everything else (media, videos, whatsapp calls, messenger calls, Wi-Fi calling, etc.) works fine.
I did a lot of research and found almost nothing ... except this:
S4 i9505 sound problem solved Cracking sound noise - YouTube
Method to Resolve Samsung Galaxy S4 Speaker Problem | Smartphone repairing guide
If you look at the 2nd picture, I believe that the solder connections on the Audio IC chip (in-call audio chip) are degraded.. Initially if I put pressure on that area on my phone, the audio would cut in and out. Now it's completely gone.
I've read that if you disassemble the phone and use a heat gun to carefully reflow the solder on that little chip, the connections re-attach and this may fix the issue.
I haven't tried because I can't afford a new phone right now and don't want to risk further damaging this one, so I just have my calls currently forwarding to my GVoice number, which works fine.
I've seen multiple other users post on the XDA forums with the same issue. Unfortunately it seems that the components on these phones only last so long. If the above repair doesn't work, the only other fix would be to completely replace the motherboard, at which point you might as well just get a new phone.
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