the large size is called a 1/4 inch phono plug and the smaller size (like ipods use) is a 3.5mm called a mini-phono and then there is a tiny one usually only for cell phones: a 2.5mm sub-mini.
Yes
That is exactly what it's called.
If an LG phone will not connect with head phones the phone is probably broken. The best thing you can do is call the phone company and tell them.
To hook your GPS up to your speakers you would need a GPS systems with a head phone jack. If you have a head phone jack on your GPS you can use the same plug from your iPod with your GPS system.
They are using a phone based on VoIP technology. Usually the phone uses a USB instead of a normal jack to connect for calls.
Jack Big Head is 6' 4".
To replace a phone jack in a home, follow these steps: Turn off the power to the phone line. Remove the cover plate of the existing phone jack. Disconnect the wires from the old jack. Connect the wires to the new phone jack, following the color-coded labels. Secure the new phone jack to the wall. Replace the cover plate. Turn the power back on and test the new phone jack to ensure it is working properly.
Only a phone jack.
Jack Loves Disneyland does not have a phone number
Yes. Its a pin hole near the head phone jack. To test use notes app to record message out skype.
Jack Big Head is 6' 4".
Use a 1 to 2 phone jack splitter and then a filter on your DSL jack.