Interestingly, the company might be using aluminum-lithium alloy for the body of the Oppo N3. The description below the photo published on Oppo' Weibo account goes "The lightest metal elements into Oppo N3. Do you know what the world's lightest metal element is?"
Since we're no chemists, we did a quick Google search to find that lithium is the lightest metal element on Earth. However, since Lithium is an extremely reactive material unsuited to use on its own for phone-building purposes we'd go on a limb and guess Oppo will also go with aluminum. Another hint in that direction is the fact that Oppo is talking about metal elements (plural).
An aluminum-lithium alloy build sounds exotic for a smartphone, but it has been used in recent years for aircraft and aerospace purposes. Reports suggest the special aluminum-lithium alloy is being used in the Boeing 777X.
In the end, Oppo's goal is clear - make the phone as tough and lightweight as possible. We're intrigued to say the least and will patiently wait to see what the company has to offer. So far we've seen leaked press renders of the phone showcasing the swiveling camera of the N1 will also be a key feature of the N3.
Whats the use of putting such materials on the mobile phones when the every phone maker releases their new mobile models one in every quarter. So anyway we are going to change the mobile for new one with better look, better configuration, ...,...