Problem with Sony Xperia Z3 compact aux connection

[Georgia7]

So what I connect my car aux lead to my phone or head and phones to my phone it connects fine but any slight moment (which on a bus or in a car is very different) disconnects my phone and my music stops. I was wondering if there is anything I can do to fix it because it's genuinely driving me insane! I know for a fact that it's not my headphones or aux leads because they work perfectly with other phones.
I have already had to have my phone repaired because of a software problem I started to think that it's not a very good phone, please help me fix it!

[Uliwooly]

@Georgia7

Could you test it in >>> safe mode

also, if possible test a different aux cable. 

[Georgia7]

No that didn't make any difference 😕

I've tried 4 aux cables and they don't make any difference. Have you got any other ideas?

[Uliwooly]

@Georgia7

do headphones work?

[Edn]

I had simmilar problem because of dust deep inside aux connector. I used a needle to clean it out.