If this is a USB one, get a new USB cable. If it’s a HEADPHONE and MIC connector, get one of those. To open up the headset, turn the ear cover on the left towards you. Simply unscrew the tiny screws at the bottom and under the sticker. When you get in there, un-saughter the cable. Now, saughter the new cable. Sometimes, this works successfully, sometimes it doesn’t. If it doesnt, try re-saughtering some stuff and make sure the cable isn’t bad (that you ordered). Hopefully this helps! Hoping I didn’t type this after you fixed/bought it.
It’s probably the motor, if you’re an expert, you should take it apart - but for most of the time you should ask the previous owner, or company if they can fix it. Again, what I always say “look it up!”. Looking it up might not work…
This might be why. (1) Your screen has been cracked, multiple times. If so, go to a Phone Repairment Service. (2) This is a phone, a bit outdated. If so you think it is, you should wait for a further update. (3) I’m hoping one of those helped. If they didn’t, you should probably look something up. (4) Hope you have a nice day!