After 2 years, the headset started to make noises. Before, only on landings and takeoffs. Now, I started riding the bus and realized that it was a headphone problem, as it is impossible to use it with noise cancellation turned on.
I contacted the company in Brazil who told me that they could no longer repair the phone, as it was out of warranty and there was no possibility of repair. I was offered the option to buy a new headphone at a discount, however, no headphones are currently available for sale. So, I contacted Anker in the USA:
"This is Shane, a manager at soundcore Customer Support.
I’ve read your emails and understand your concerns on this matter, we are so sorry that the troubleshooting didn’t work, it seems that your headphones are unusual.
Regarding the warranty, according to the agreement between Anker and our certified resellers, the resellers are responsible for fulfilling the warranty for the products of ours that they sell, but the reseller stated that your order is out of warranty now, there is nothing else we can do for an out-of-warranty order."
How I solved the problem:
However, during use I simply pressed the center of the speakers (in the area where you see the letters R and L) with my thumb and forefinger, feeling a displacement of the center of the speaker.
Do this while wearing the noise canceling headset over your ear, as you will hear a low rumble when the speaker is pressed.
This solved my problem, I believe it could be some kind of vibration that occurs in the housing, because now I don’t have that noise anymore and when I go through situations of greater vibration I notice the cancellation working and emitting a slight sound to cancel!
But, there is no way to trust a company where a device, after 2 years of use, presents problems and does not offer solutions: neither repair nor replacement!
I hope we can solve it!