The OPPO roll-able phone rather than having a rectangular expandable shape will a square shape. According to the patent, the new design which is square when rolls out or slides-up (as per the video illustration) becomes a full standard size rectangular smartphone. The basic functions and tasks, replying to messages can be performed even when the phone is rolled-up.  

The design is based on a utility patent by Guangdong OPPO Mobile Telecommunications filed at WIPO. According to the OPPO design the smartphone in the rectangular shape i.e. when rolled-up can perform well and give proper functionality and take more work-loads, as compared to other expandable handsets. Google had also planned for a foldable phone this year, but the recent news is that Google canceled plans for it. Nothing more can be said about the specs of the OPPO roll-able smartphone or when it will be launched as till now no official statements are released. All the info shared in this post is based on the the patent images. Also Read: Popular Smartphone Manufacturer Oppo Collaborates with Daraz for their Annual 11.11 Sale