Oppo R819 Review
The earpiece is of average quality, producing enough volume, but somewhat hollow-sounding voices. The other side attested they can hear us loud and clear, with no hissing, voice distortion or ambient sounds, thanks to the well-placed two microphones for noise cancellation.
A 2000 mAh battery unit is what Oppo supplied with the R819, which is unfortunately not user-replaceable. Only one of the SIM cards in the dual-SIM device can stay connected to a 3G network at a time, which works well for the standby times, though while browsing or watching videos you'd get about the average 5-6 hours of endurance – as we mentioned the screen is pretty bright, so toning it down to a half should increase your mileage.
Dual SIM handsets seemed as an afterthought until recently, that's why we are glad the Oppo R819 finally delivers this functionality in a well-designed midranger with good specs and acceptable performance. It sports compact chassis, good call quality, very bright HD display and fine camera, all for about $350 unsubsidized.
There aren't major gripes with the handset, and there's hardly a match in the dual SIM universe for its specs and price, save for the version of Huawei Ascend P6 with two SIM cards. That same handset is Oppo's phone main competitor, as it features svelte, premium design for a tad higher price, but its camera quality is inferior.
We can also chalk off the LG Optimus F7 as a direct competitor if you find no need for a second SIM slot, as it has similar specs and price, albeit with a larger battery. The Sony Xperia ZR can also be put forth, though it will run you more and doesn't come with such a thin compact design. All in all, if you are looking for an affordable Android midranger with dual SIM abilities, the Oppo R819 is hard to beat right now.
Software version: R819_AS_11_A.06_130815