Iphone 8 with outgoing audio problems
Like to share our experience with voice audio quality issue on the iPhone 8, the specific issue, anyone you talk to is having problem hearing you, like static, drop outs and various other problems. The issue does not happen all the time, seem to build up to the issue, good quality at first then over time it gets worse and worse. Others are staring to report this issue. The iPhone 8 itself has no problem with hearing other end of the call audio.
What I have been able to determine is it LTE issue, if you turn off the LTE feature on the phone and force it to 4G only the audio is fine, also making a wifi call or Facetime audio or video calles as long as it using wifi to make the Facetime call it is fine (IE turn off Cellular data). VoLTE seem to be the the issue, even turning off VoLTE and just doing LTE data does not always clear the problem. I did a bunch of testing and was able to isolate the issue.
Spoke to Apple and they are claiming no issue, they test the phone using the onboard diagnostics and it shows no issue so they refuse to replace the phone. The Apple tech kept saying as long as the diagnostics do not show an issue there is nothing they can do. Also kept repeating that Apple and AT&T continue to work on voice quality over the network, it is something we have to live with until the network is improved. This happen no matter if the phone has full bars or 1 bar, does not matter if you call another cellphone or a land line, everyone on the receiving side hears bad audio.
We were going to demonstrate the issue to the apple tech, and they could care less they kept repeating like a broken record, if the test show everything working the phone is fine, and any audio problem with a call is most likely the network.
In our house we have an old iPhone 5, iPhone 6 and iPhone 6s took the SIM card out of the 8 put into all the other phones and no audio problems what so every. Only the iPhone 8 had the issue. So that tells me the network is working fine.
We have had iPhones since the first, along with iPads and Laptops and always got Apple care even though most times we never had to use it, however, when we had any sort of issue with iPhones Apple just replaced the phone no questions asked. My son replaced his iPhone 4 times, because of display clicking, home button not working all the time, the power on and volume buttons intermitting working. This is the first time we ran into an issue with Apple absolutely refusing to replace the phone, they even refuse to just swap our SIM into another iPhone 8 to see if the problem stayed with the phone or moved with the SIM or as they claim it is a network issue which AT&T needs to address. What is interesting to note, no one on Verizon, Sprint or T-Mobile is having the issue.
After talking to Apple and AT&T they seem to know about this issue but are refusing to do anything at this point, They want you to do a network reset on the phone, reload software from scratch, turn off VoLTE or LTE all together. Doing this does seem to temporarily clear up the issue, but I suspect it will come back when you do not expect it. I am thinking it has something to do with the new LTE modem in the phone, and the new EVS Audio Codec which requires updates to the LTE network which AT&T has yet to do.
It would be interesting hear how many people are running into this issue. if so let make a big stink about it.