A new device is getting ready to join Oppo's K series, following the K3 from a few months ago. The Oppo K5 will still be a mid-ranger by the looks of things, but as its name implies will sit above the K3 in the Chinese company's roster. The Oppo phone with the model number PCNM00 has just been certified for sale in China by TENAA, the relevant regulatory agency, and this is rumored to be the handset that's going to end up being marketed as Oppo K5. The certification process has given us some pictures of the phone, as well as a bunch of its specs. The K5 should thus boast a 6.4-inch...