Oppo’s new A91 smartphone has flagship features but a sub-$500 price

Oppo has launched a sub-$500 smartphone – the A91 – which includes a slick design and a range of top-shelf features normally found on devices that cost more than twice as much.
The Oppo A91, available in stores now for $499, has a 6.4-inch FHD+ AMOLED display which goes edge to edge with a screen-to-body ratio of 90.7 per cent.
The device weighs just 172g and has a thickness of just 7.9mm.On the camera side, there is a 48-megapixel main camera, an 8-megapixel wide-angle macro lens, a