Got a new phone upgrade recently. Old phone had a standard plug-in charger with a normal wall plug. The new phone has a usb cable and a socket plug (left in picture) that doesn't fit a standard wall plug. Do i need to buy an adaptor to fit the new wee plug into a wall socket ?? I charge the phone on my laptop, but i'm thinking more about being on holiday and having to charge it away from the laptop. Any help for a luddite old man would be welcome.