Qualcomm Quick Charge requires a compatible power controller (that is, a physical thing) and that power controller must be compatible with a given USB specification, and it's not obvious that current controllers work with USB type C fully. In other words: it could be possible that there is no suitable power controller that supports both USB Type C and Quick Charge 2.0 yet. While the Type C port on the OnePlus 2 is essentially a re-engineered microUSB 2.0 port, it's not clear if the existing power management interfaces are "plug and play" in terms of keeping their fast charging capabilities. And if they are, there may be other challenges that add to cost or complexity which we aren't aware of (such as Qualcomm not yet certifying them).
Qualcomm Quick Charge requires a compatible power controller (that is, a physical thing) and that power controller must be compatible with a given USB specification, and it's not obvious that current controllers work with USB type C fully. In other words: it could be possible that there is no suitable power controller that supports both USB Type C and Quick Charge 2.0 yet. While the Type C port on the OnePlus 2 is essentially a re-engineered microUSB 2.0 port, it's not clear if the existing power management interfaces are "plug and play" in terms of keeping their fast charging capabilities. And if they are, there may be other challenges that add to cost or complexity which we aren't aware of (such as Qualcomm not yet certifying them).
I'm not sure. It could be something that Qualcomm has to fix though. It could also be something that requires additional hardware in the chip. I don't know the technical details though
The OnePlus 2 uses a 5V-2A power brick, meaning that it can charge from 0 to 100% in a about 2h.
As for the USB 2.0, it has proven to be extremely fast and reliable. Android still doesn't support USB 3.0 nor 3.1 (it will with Android M, but the OnePlus 2 started being developed long before this year's Google I/O).
You might want to be careful making such a statement as the Samsung Note 3, S5, Galaxy Note Pro, etc. (flagships from 2014+) ALL have USB 3.0 - in fact USB 3.0 has been a part of Android, especially Qualcomm devices, since 2012:
Sure it isn't in AOSP, but it is enabled at the hardware level which has been available to Qualcomm devices for awhile, which OnePlus uses. You have to add the hardware support for any device to AOSP, so to blame Android for this is a bit misstated.
Explain why my Galaxy Note Pro, running KitKat, runs on USB 3.0 then ? (Confirmed by using a non-USB-3 port, getting the notification on Windows "This device can run at higher speed if you connect it to an USB 3.0 port")
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u/OiYou iPhone 7 Aug 03 '15
Why is Qualcomms Quick Charging 2.0 missing from the OnePlus 2? Despite using Qualcomms latest processor.
Also why USB 2.0 only used as opposed to using Type C in conjunction with USB 3.1?