No. Oppo Find X does not have the removable battery.
Yes, Oppo Find X does have the NFC support.
No. Oppo Find X does not have 5G network support as of now. Oppo has not yet announced support for the 5G network for any of their phones.
Oppo Find X is powered by 3,730 mAh battery. And it is very well optimized with phone's software. Oppo Find X also supports fast charging thanks to Qualcomm and supplied 20W VOOC fast charger. It fills 50% of the depleted battery in just 30 minutes.
The Oppo Find X is the most unique smartphone money can buy today. And that's enough to tip the scales for a lot of people. By winning the beauty contest Oppo has already secured a best-seller status for its latest flagship.
Its near bezel-less screen, eye-catching rear glass panel, cool pop-up camera mechanism and class-leading battery life make the Oppo Find X one of 2018’s most interesting phones. However, its less-than-stellar camera, restrictive software and eye-watering price leave a bitter aftertaste to what is an otherwise delicious flagship.