Do I need just an adapter or a converter? This is for a recharge of my Samsung Galaxy S7
Yes, an adapter is typically needed as there is a different type of wall plug for US, Europe and Australia.
See here for info/pics of the adapters:
https://www.verizonwireless.com/accessories/verizon-international-micro-usb-wall-charger-kit-intltvlmicr-m/?lid=sayt&sayt=internationa*
