What are the accessories behind the iPhone in the store?

I went to the iPhone store and found something attached to the back of the iPhone and a line was connected.

It feels like I'm connected to a charger

What is this?

430 2017-04-03 Gentleman

popular What are the side effects of oats?

popular Can I listen to music with Bluetooth earphones on the plane?

popular What is the deadline for purchasing lotto?

popular What is the nationality of Minnie?

popular How can I connect to watch a video on my phone on TV?

Same Tag What is a cheap plan that offers a lot of text messages?

Same Tag Why is it that you get a message to turn off the Wi-Fi because the battery is low?

Same Tag Can I still open 011 with 2g phone?

Same Tag How do you measure the size of your phone screen?

Same Tag What should I do to find out how much data I have left on my phone?

Same Time Is there a way to prevent the earphone wires from getting tangled?

Same Time What are the accessories behind the iPhone in the store?

Same Time It opened next to the iPhone 6 Plus case, should I get it as?