It's not problems in the sense that it doesn't work but problems in the sense that the phones don't maintain a consistent bit rate on the audio streaming. For example I have a Fitbit and if I sync my Fitbit while I'm listening to Bluetooth headphones I notice the audio quality takes a dive until I exit the Fitbit app. Also If I get in the car from the gym and my headphones are still synced to the phone when the car audio system picks up the phone the audio quality is reduced until I turn my headphones off.Brah I already had to replace mine cause I snapped it while writing
Then decided I will never take the new one out the phone again
Then I bought a Meko stylus set that came with 2
Gave one to my mom
The other one broke
So I got the S3 pen n the Staedtler one
I never have issues with mine
Basically if you have more than one Bluetooth device synced to the phone at the same time the phone reduces the Bluetooth audio quality. This has been a problem with Samsung phones since at least the S5. It's on all their phones. I've had multiple S6 phones, multiple S7 phones, multiple Note7 phones and the S8 and now Note8 and all of them did it. I've also had multiple iPhones and none of them ever did it.
The only way to avoid it is to get Samsung branded headphones or AptX codec headphones. If your headphones use the standard SBC codec it happens.