Noise cancelling does still work, and the headphones are still usable, but the static is quite loud and annoying especially for the price.

I had Bose headphones in the past and loved them, but everyone was buying

Let me start by saying these are the most comfortable headphones and the best noise-cancelling technology that I have experienced.

If you’re looking for noise cancelling headphones, the Bose QuietComfort 20 acoustic noise cancelling headphones are comfortable and perform well.

These headphones are certainly enjoyable, but were not what I expected

It's not like noise isolating headphones that jam deep into your ear and simply block out all sound.

Simply amazing headphones

These headphones simply sound great, just as headphones

I have owned these great headphones for about 3 years at the time of this writing

Having said that, the QC20s are a simply fantastic pair of noise-cancelling headphones, among the best available, and a great purchase for any regular traveler

By far, EXTREMELY FAR, the best headphones I've ever had

They are great headphones

These are hands down the absolute best headphones I have ever used

The headphones worked well for phone calls with my mobile phone.

The best noise cancelling headphone out there

I bought these for the convenience of the smaller size for travelling and for wanting the same performance as my "over-ear" noise cancelling headphones from Bose.

These are the best headphones i've had, but i must admit they are the only active noise cancelling headphones i've owned so take my review with that in mind.

These are probably the best headphones I've ever purchased

I really enjoyed these headphones while they lasted

Excellent noise cancelling headphones.

I have never used noise cancelling headphones and had assumed that the big over-the-ear design was a big part of the noise cancelling feature.

I would NOT RECOMMEND these headphones

Quite possibly the best noise cancelling headphones I've ever used

Take the headphones for what they are, not what they're advertised to be, and hopefully you'll still enjoy them.

The sound is not as good as my big bulky headphones, but for earbuds they are the best quality I have heard

Years ago I tried noise cancelling headphones from another manufacturer and found that they made the problem worse instead of better by reducing the background noise and the conversations even more distracting

If you’re looking for noise cancelling headphones, the Bose QuietComfort 20 acoustic noise cancelling headphones are comfortable and perform well.

I have the used an older pair of Bose noise cancelling headphones and the QC20 earbud style work just as well as the full sized headphones.

I absolutely LOVE these headphones

These are the best headphones i've had, but i must admit they are the only active noise cancelling headphones i've owned so take my review with that in mind.

I bought these for ASMR videos because the videos really relax me and I can't do over-ear headphones because they hurt my ears and jaw from being too tight usually, so I thought earbuds were the way to go

They function just fine as headphones, and the white noise cancellation is still nice

Love these headphones.

Love these headphones!

They are nice headphones, they should be taken care of

I'd heard that many judged Bose's headphones better at quieting ambient noise than other noise-cancelling headphones, but the difference is really dramatic, and these earbuds truly are almost as effective as Bose's world-beating QC25s in my comparison

I was so surprised that it exceeded the qc 25 headphones

Nice lows (bass) that I found unexpected from a pair of in-ear headphones

Again, I've already touched on this but be ready for an overall quieter headphone if you buy these than if you buy a different pair

Recently traveled abroad, and these headphones are amazing for airplanes

I love these headphones

I have never been one truly won over by Bose till these acoustic noise cancelling headphones.

The headphones themselves are clear and bassy

I love these headphones

The Bose QC20 are amazing noise cancelling headphones

The Bose QuietComfort 20 acoustic noise cancelling headphones, manufactured in China, works with Samsung and Android devices.

These headphones block almost all background noise

These are absolutely outstanding headphones.

Simply amazing headphones

These headphones are spectacular but I wish they would hold a charge longer.

It is the best and the only one you can ever satisfy as Noise Cancelling headphone.

Nice headphone nice de-noise system nice everything

I still think QC20 is the best overall noise cancelling headphone in the market

These headphones are amazing.

The design on these is great, I love the idea of portable noise cancelling headphones that I can take on the plane without the additional bulk and they actually work

The sound quality and noise cancelling were even better than my old Bose over the ear noise cancelling headphones

The headphones work as advertised and do a great job.

Nice thing is they still work as headphones if you run out of battery

These headphones are surreal.

These headphones aren't great at blocking high pitch noises like a screaming toddler or a baby's cry.

These headphones are good at drowning out constant noise (PC fan, vacuum, etc..).

No more pain on my ears by wearing noise canceling headphones for long haul flights.

I have always preferred in ear headphones to full head earphones or those that clip around the outside of the ear.

I'm one of those people that doesn't believe I should be able to hear ANYTHING from outside if I am wearing noise cancelling headphones.

Not diving into technical stuff, but great headphones

I see no way around this with noise cancelling headphones, and Bose has done as good a job as can be expected

The BEST headphones for the in the ear type

Overall, this is by far the best set of noise cancelling ear buds I have ever used, with better sound and noise cancellation than all but the best headphones.

But the sound quality is not as good as a $250 headphone.

Overall, these headphones just blew me out of the water

Amazing headphones but the wires catch on everything

I have a pair of the Bose over-the ear noise cancelling headphone

Nice headphone nice de-noise system nice everything

so i tried a couple other under $100 earbuds with active noise cancellation but found none worked nearly as well as my old over-the-ear qc15's