Performance
Under the hood, the Vivo U3 runs on Android 9.0 Pie with Vivo's own Funtouch 9.0 interface. It is powered by the Qualcomm Snapdragon 675 chipset, fabricated on the 11 nm process, which strikes a decent balance between power efficiency and performance. The octa-core CPU configuration, consisting of 2x2.0 GHz Kryo 460 Gold and 6x1.7 GHz Kryo 460 Silver cores, allows the phone to handle daily tasks smoothly and efficiently. The Adreno 612 GPU caters well to graphic-centric applications and moderate gaming.
The phone comes in two variants: one with 4GB of RAM and the other with 6GB of RAM, both coupled with 64GB of internal storage utilizing UFS 2.1 for faster data transfer rates. This setup provides ample space for apps and media, although heavy users might want to consider utilizing the expandable storage option.