If nothing happens when you plug your iPhone or Android phone in, try this easy DIY trick before spending any money.

Most cars produced in the last several years come with lots of USB ports, but if you find one that can't charge your phone, we have some suggestions to try.

While my phone won't charge as quickly as it would with a dedicated power bank, it can make a huge difference to go from 10% battery to 25% while I travel from one destination to the next.