Re: Few details missing
According to CPW, the answers to the first three are dual sim, micro SD card (presumably in the other SIM slot) and headphone jack. The OPPO website is entirely silent on the subject and the user manual is unhelpfully generic and says "depending on model". Obvious opportunity for some value-added journalism, but to be fair to El Reg, all the review sites seem to have lost interest in publishing specs, which rather suggests that most people are not interested in reading them.