Last year, Apple announced the iPhone 7 and 7 Plus with displays offering a wider colour range. They also announced that the cameras built into these phones would be able to take advantage of that. Most image sharing platforms however, do not. They typically convert the images to sRGB upon upload. Worse, some even strip out colour profiles completely.
Instagram, though, have just updated Instagram to now support the wide colour range the new devices can offer. While it may seem that this move is heavily Apple-focused, it’s really not. It’s just that Apple are the first manufacturer to really take advantage of the DCI-P3 colour space for mobile devices. It’s the standard for digital movie projection in the USA. And it’s the colour space Apple chose to go with for their wide gamut displays in 2015 over AdobeRGB.