Professional music mobile phone
As a professional music mobile phone, A90 has an efficient digital signal processing chip and a unique OBS(OPPO Basic System) sound system. The full name of OBS is OPPO Basic System, which is the abbreviation of OPPO's unique sound system, and it is an important element that makes A90 sound quality outstanding.
Excellent sound quality
A90 is equipped with Yamaha digital audio amplifier to reduce the distortion rate of pulse signal and noise. In addition, PAD (pure audio design) voiceless technology, conch cavity design, anti-sound-breaking and other optimization technologies are adopted, so that you can enjoy more pure and real 3D surround sound effects.
Exclusive music playing system
In addition to professional sound effects, A90 adopts the exclusive music playback system OPLAYER 2.0, which makes track management more convenient and supports the simultaneous display of lyrics.
Excellent user experience
Excellent sound quality has always been recognized by OPPO mobile phones. In addition to excellent music functions, A90 also adopts the Use Easy operating system developed by OPPO based on user experience, which makes the operation and application of A90 handy and very convenient.
A complete learning tool
As a model that focuses on students, friends and young people, its functional design is also very unique. Built-in "I-learning learning tools" include handheld courses, circular scene mode, mood diary, mobile English communication and other functions. With one machine in hand, you can study and live without worry. In addition, according to the needs of netizens, A90 is also equipped with FM radio function.