Buy used smartphones Can be a bit of a minefield, but there are some great bargains to know if you know what to look for. Often, you might have to deviate from the original box, or perhaps some of the common accessories would be missing out on the demand price. In the latter case, you may not want to use that second-hand OnePlus 6T. You won't be able to quick control A OnePlus 6T if you do not have an official Dash or Warp Charge plug and the cable provided in the box.
I tested a number of phones to find out how beautiful they are with other companies' chargers and cables. The proprietary charging technologies are becoming increasingly common and therefore most smartphones take the fastest when using the charger and cables in the box. The OnePlus 6T and the McLaren Edition are the only phones I have tested so far, that the effluent will quickly load when you throw the in-box cable or charger into the cabinet.
This is not a complete surprise as OnePlus recognizes that you need to use the company's Fast Charge Type-C Cable to achieve the fastest speed. What's even more disturbing is that changing the cable does not slow down the speed, it stops charging quickly. The OnePlus 6T also does not support any other loading standards as a backup.
At a minimum, a phone must sign 10W to view as a fast load.
For comparison, the Huawei Mate 20 Pro Slower if you use non-Huawei cables, but still achieve fast charging speed. Although the Mate 20 Pro does not load fast when using other phone chargers, it also makes it less than ideal.
Meanwhile, the LG V40 is slower out-of-the-box but offers more than 10W power when both LG and Huawei chargers are used. This is probably because the phone uses the more common Quick Charge standard rather than an internal technology that Huawei's charger seems to support as a backup.
The bottom line is that you can't quickly load a OnePlus 6T with any charger or cable from another OEM. Not exactly good news for second-hand buyers or even when you upload your phone to a friend's home or car.
More importantly, the OnePlus 6T supports third-party common chargers, such as those using USB Power Delivery or Qualcomm's Quick Charge standards. I also tested it.
Disappointing, neither the OnePlus 6T nor the OnePlus 6T McLaren Edition supports Qualcomm's Quick Charge 3.0 adapters. The phones also don't work with USB Power Delivery. In my opinion, this is a big disadvantage for a high-tech piece and makes the phone a contributor to the annoying contradictions with USB type C devices that can be confusing to consumers.
The Mate 20 Pro, LG V40, and Google Pixel 3 XL provides fast loading speed through USB Power Delivery. The Pixel 3 XL does not like Quick Charge 3.0, but the other two phones also draw fast charging power from a Quick Charge 3.0 adapter. With at least one other method of fast loading, preferably USB Power Delivery, compatibility with third-party chargers and accessories such as power packs ensures. It's something we want to see from all smartphones.
Warp Charge is a particularly bad example of its own default. It does not support Power Delivery as a backup.
The explosion of property rights fast charging technology has significantly increased the speed at which our phones go empty-handed. However, property technology always runs the risk of closing consumers out of third-party products, which is exactly the situation with the OnePlus 6T. Competitors like Huawei support USB PD and Quick Charge in addition to their super fast charging technology. There is no good defense for OnePlus's more limited technology.
Of course, this is not a problem if you always have your OnePlus Dash or Warp Charge equipment. But if you want to buy a second-hand OnePlus 6T, make sure that it comes in the box with the default charger and cable, or you will come up with slow charging speed.