LPT: USB cable not sitting firmly in phone's charge port? Use a toothpick or sewing needle to clean out the lint.

I was freaking out a bit because cables would barely stay in my phone to charge.

I took a look and noticed that it looked a little fuzzy in there. Though it took a while, I managed to dig out an enormous amount of lint and now the cable fits like a charm.

Please remember: Be very gentle and patient, you don't want to bend the pins in the port. It took me least 30 minutes. Also, use a toothpick if you can.