Jbl tune115 bad quality?

You all know the Bluetooth in ear headphones from JBl that you get for 40 euro at saturn. Today I got some which I find the really great and tested the colleague but on my phone, the quality is really scrap. No bass and the frequency is disgustingly high. I own a huawei mate 10 lite.

I know neither the headphones nor the technical data for the audio functions of your smartphone. Both the headphones and the smartphone or its audio output could be defective.

Test the headphones on other devices to confirm their correct operation or to detect possible errors.

Try other headphones on your smartphone, also change the location to exclude radio interference.

My iPhone headphones work great with cable. Is it perhaps because of the Bluetooth connection of my cell phone? The headphones are called JBL Tune 115 Bt

"My iPhone headphones work great with cable. […]"

Then use the JBL headphones with cable.

You all know the Bluetooth in ear headphones from JBl that you get for 40 euro at saturn.

I know the good old JBL Tune 110BT from the manufacturer, but did not know that these already have a successor with the 115.

Today I got some which I find the really great and tested the colleague but on my phone, the quality is really scrap. No bass and the frequency is disgustingly high. I own a huawei mate 10 lite. Many thanks in advance

Either the Vorränger was changed so much that they can now be seen tonally or they are just broken.

The JBL headphones have only one connection via Bluetooth.

Had with the manufacturer synonymous only bad experience, just the sound displeases me from the manufacturer. The only reasonably usable models are from the live series.

I'm aware of that.

Why do you test with wired headphones when it comes to finding out if your wireless headphones are working properly or not?