Sound that stops when you move can point to a connection problem, but it does not automatically mean the earphone driver is broken. First distinguish an actual interruption in the music from a rustling sound caused by the cable rubbing against clothing.

Describe the symptom before changing parts

Does one channel disappear, do both channels stop, or does the computer show the USB device disconnecting? Does playback continue on the screen? Note whether normal movement near the plug, dongle or earpiece coincides with the problem. Do not pull or sharply bend the cable to reproduce it.

Build a simpler connection

Pause playback, lower the volume and remove unnecessary extension leads, splitters and USB hubs.
Make sure the plug seats fully. A thick phone case can obstruct the plug even when it appears connected.
Support a hanging dongle so its weight is not pulling on the phone's port.
Test while the source and cable remain still. Compare another app or a local recording if streaming interruptions are possible.
Try the same IEMs on another compatible source, then test a known-working headset on the original output.

When a cable substitution is useful

If the IEM has a detachable cable, use only a spare whose connector and polarity requirements are confirmed for the model. Disconnect from the source before changing it. Hold the connector housing, follow the prescribed removal direction and never tug on the wire itself.

If a compatible spare resolves the interruption, the original cable or its connections become the main suspect. If both cables fail at the same earphone socket, ask support to inspect the socket. This comparison narrows the fault; it does not establish warranty coverage or justify opening the shell.

What if I hear rubbing but the music never stops?

Reduce contact between the cable and clothing, leave enough slack and use an appropriate cable clip if supplied. Follow the intended over-ear route for an over-ear model. Cable movement noise and electrical dropouts need different solutions; replacing a driver will not address fabric rubbing.

Avoid temporary fixes that stress the connector

Do not wedge a plug sideways, bend pins to make contact or keep a cable under tension with tape. Stop using a cable with exposed conductors or a damaged connector. Record where the interruption occurs and send that information to support.

Check the IEM connector compatibility guide before browsing TINHIFI cables.

Computer-side reference: Microsoft audio troubleshooting. Physical connector instructions remain model-specific.

Illustration: generated editorial artwork, not a photograph of a specific TINHIFI model.