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Back in 2014, when these three versions were released, the iPhone 6 and iPhone 6 Plus had Bluetooth 4.0. Now, they have all been updated to the latest Bluetooth 4.2 version with significant enhancements. The newly launched iPhone 6s duo also comes with this new support pre-installed.
Bluetooth 4.2 is known to increase data transfer speeds by 2.5 times and reduce power consumption significantly. Moreover, it enhances security and privacy features.
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All these improvements will be accompanied by a range of Apple devices set to support Bluetooth 4.2 in the near future, including keyboards, the Magic Mouse, and the Magic Trackpad. However, devices like the iPhone 5s, iPhone 5s, iPad Air, and iPad mini 2 will continue to have only Bluetooth 4.0.
https://Mytour.vn/iphone-6-6-plus-and-ipad-air-2-integrates-bluetooth-42-3307n.aspx
Thus, it can be seen that despite its quiet appearance, the addition of Bluetooth 4.2 on the device helps the iPhone 6 and iPhone 6 Plus models to be stronger compared to the original design standard. Additionally, the default language on the device will be set to English. To use Vietnamese, users need to change the language on the iPhone 6, which is easily done through the Settings function on the device.
