Your phone's charging port works only intermittently. Call a repair shop and ask three or four questions before deciding whether to bring it in.
Hello, my phone charges only if I hold the cable at an angle, and trying a different cable hasn't solved it. I'd like to have it checked. Do I need an appointment to bring it in? How long does an initial inspection usually take? Is there a charge for checking the problem before I agree to a repair? What should I do to prepare my phone and protect my information before leaving it with you? I use the phone for work, so I'd like to understand the process before choosing a day to visit your shop. I can bring the cable I normally use so you can see exactly what happens. I don't know whether the port itself is damaged, and I would prefer an inspection rather than requesting a particular replacement part without knowing the cause.