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Wireless charging is best sex positions videosundoubtedly one of the most exciting, hyped-up features expected to debut with the iPhone 8 later this year.

The wireless charging capability will likely come via the inductive Qi standard, which means the phone will require some form of power mat. So, we have a good guess at what the new wireless charging will look like -- but what will it soundlike?

The answer to that question might just be hidden deep down in iOS 11. An audio file of a new charge tone surfaced from a beta version of the upcoming OS after it was posted to YouTube and spotted by MacRumors. The tone gives our ears a sweet preview of what they might be treated to every time we put our iPhones down on the new inductive power mats, leaving our Lightning cords in the past.

The short video plays two sound files. The first, "connect_power.caf," which is the familiar ping you hear every time you plug your phone into a Lightning cable. Standard stuff.

The second sound, "engage_power.caf," is something else entirely. It's a clearer, more extended noise, giving off sort of a compressed THX sound vibe.

Introducing a new tone could be a good idea for Apple. Users with wireless charging get the extra reassurance that their device is powering up, and the company can lay claim to a new iconic sound within our collective audio consciousness, joining its default ringtone and text tones.

Wireless charging isn't the only new power-centric feature slated for the next-gen iPhone. Reports also claim the flagship device might have a bigger battery than its predecessors, which could help extend life between power ups, as well as new USB-C Power Delivery chips for lightning-fast charging when you're using the Lightning cord.

None of these features are confirmed, however, and there are other unused tones in the annals of iOS 11 that may or may not make their way into use. We won't know for certain what will come with the iPhone 8 — or everything about the final version of iOS 11, either — until Apple finally unveils its latest and greatest hardware and software later this year.

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