Aukey EP-T31 Bedienungsanleitung Seite 14

I've connected the earbuds with my smartphone but can't hear any sound
Double-check the volume level on your smartphone and the earbuds. Some
smartphones require you to set up the earbuds as an audio output device before
the audio can be transmitted. If you're using a music player or other device, please
make sure it supports the A2DP profile.
The sound isn't very clear or the caller can't hear my voice clearly
Adjust the volume on your smartphone and the earbuds. Try moving closer to your
smartphone to rule out the possibility of interference or wireless range-related
issues.
What's the wireless range of the earbuds?
The maximum range is 10m (33ft). However, the actual range depends on environmental
factors. For optimal performance, keep your device connected within a range of
roughly 4m to 8m and make sure that there are no major obstacles (like reinforced
steel walls) between the earbuds and your device.
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