If you're wanting to use 3.5mm headphones with the iPhone 7, you're going to have to use the included accessory. As previously mentioned, Apple chose to remove the headphone jack from its new iPhone. Now the company introduces the iPhone Lightning Dock that allows you to charge your phone and listen to music simultaneously.
The Lightning Dock can be used to charge and sync any iPhone that has a Lightning connector, as your phone simply sits in the dock, making it perfect for your desk. Again, you can even use 3.5mm headphones with the dock, thus allowing you to listen to music while you charge.
Available in black, space gray, silver, gold and rose gold, you can pre-order the iPhone Lightning Dock today for $49 USD.
Also, be sure to check out Belkin's new $40 adapter that lets you listen to music while charging the iPhone 7.