Phone connection: how does it work?
The USB-C connection is the newest connection for Android smartphones. This connection isn't only used for Android smartphones, Windows computers also increasingly utilize a USB-C port. What's great about this connection is that both sides of the connector are identical. It doesn't matter how you plug the cable into your smartphone, it'll always fit. USB-C also makes it possible to charge your battery and transfer data more quickly.
micro USB port
After the USB-C port, the micro USB port is the most frequently used port for Android smartphones. You can use this port for the same purposes: charging your phone and transferring data from and to your computer. The top and bottom of a micro USB port differ from one another. This means you need to be careful to plug the cable correctly into your smartphone, otherwise it won't fit.
Apple has its own port for the iPhone: the Lightning port. This is a small, symmetrical connection. This means that both sides of the connector are identical, which allows a Lightning cable to fit in your iPhone in 2 different ways.
Older connectors: mini USB and 30 pin
There are 2 older connectors that are no longer used, but which are still used in older, previous devices. Mini USB is the forerunner of micro USB. Older Android smartphones still have this connection and some senior citizens phones with mini USB ports are still manufactured. Apple's 30-pin connector is the forerunner of the Lightning connector, which was used on iPods and iPhones made before the iPhone 5. Unlike the Lightning connector, this flat, wide connector isn't symmetrical. This means a 30-pin cable will only fit your device in one way.