Even though OnePlus recently announced that it will be leaving the U.S. and U.K. markets, the phones are still in circulation. Typically, with its latest phones, OnePlus has launched a model with a numerical designation, the most recent being the OnePlus 15, as well as a second one with an 'R' added to the end of the number. It boils down to features and specs, which are pared down for the cheaper option. In every generation, the 'R' designated phone has a slightly less powerful processor, less RAM and storage for the top option, and often a slightly smaller battery. Even so, for some, the 'R' designated phone might actually be the better fit while saving you some money in the process.