2e other caller can't hear me

I’m writing here in the hope someone has had this problem. I have emailed tech support but their offer to replace [at a fee of $59 US plus postage from Australia and who knows how long turnaround] is unsatisfactory.

So here goes - received my phone in February. Great phone, but it drops out ie the caller on the other end can’t hear me. Last month I got really sick of this little niggle so contacted tech support. Try these things [ Basic Troubleshooting ] Battery life or other unexpected issues

So I cleared cache, nothing, then the other end stopped being able to hear me at all. So I factory reset, this achieved nothing. Reboot into safe mode - I made one call and other end could hear, then a few more test calls to my voicemail - when I replay I can hear nothing. Factory reset again, did not install any extra apps - no result. Enter safe mode, one call to my voicemail and yes I could hear the call when I listened back, repeat, nothing. Tested video camera - the mic works perfectly [sounds pretty good actually]

Surely there is a solution - if the mic works, and it sometimes works in safe mode?

Have to say, the below offer did not thrill me - I’d be out of pocket for a phone that never worked properly and by my estimation wait a month to get a new one [return post from Australia]. Bought the phone largely due to the four year warranty, thought it would be a good basic smartphone, maybe not a flagship type device but was hoping to be able to make phone calls. The warranty page states no cost for no factory defect, which mine has.

Here is our warranty process (International):

  1. Customer is responsible for shipping the damaged phone to our address.

  2. You can make a payment of USD 59 to us at [this link]

  3. Please [factory reset] the phone and ship it in a safely packaged box.

  4. We will ship you a replacement unit once we receive yours.

Hi @danmckay - I’m sorry for the issue you are facing. However, the team has given the right response. Our warranty with 2-way free shipping is only applicable in a select set of countries (does not include Australia at this point in time). We had mentioned it clearly on our Indiegogo page and it is there on our product page on the website as well. Providing warranty support with free 2-way shipping is a very expensive endeavor (we might be among a handful number of companies who do this) and that is why we have to make sure we can sustain it before we expand to any region.

I have the same problem (or similar). At first I thought I was occluding the microphone, but that was not the case. The protective case is a loose fit and I thought that may be the problem slight movement occluding the microphone). It’s possible that the loose case is affecting the microphone but I don’t think this is the real problem. I think that the back of the phone (which seems to have a slight can’t towards the bottom left corner where the mic is located) may be the culprit. The mic is located behind the rightmost hole in what would normally be the speaker grill on the bottom of the phone. My guess is that a little judicious filing with a small, round file to slightly enlarge or laterally spread this hole may solve the problem. It’s also possible that a small chunk of rubbish may have got into the mic hole and be causing problems (you would expect that the mic would be malfunctioning all or most of the time in this case but it’s worth checking).
If I remove the back and occlude or partial occlude the mic hole then the mic malfunctions (no big surprise). So my money is on a back misalignment.
I would make a plea to teracube to tighten up the manufacturing specs on the back and (especially) the case.
Also PLEASE supply a hardened glass screen protector (the plastic one is junk, and the closest commercial ones, notably for one of the Honor phones is not a perfect fit).
Otherwise the teracube concept is a decent phone at a good price…

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