The O+ Ultra line-up is one of the few range of smartphone in the market that delivers extra large batteries. This category is seeming to be an emerging one, as most people are getting tired of charging their devices several times a day. Both the first and the second iteration of the Ultra had large 4000mAh batteries. And now, the company is stepping it up a bit more with the O+ Ultra 3.0. The third iteration now has a larger 4700mAh battery. Plus, O+ also claims that this is a “Photographer’s Choice” smartphone. However, upon comparing the spec sheet with its predecessors, the device