1, first check whether the cell phone signal is stable and ask different contacts to call you in an open outdoor place.
2. Check whether do not disturb mode is set, resulting in missed calls.
3. If some contacts can't get in, they may be accidentally set to add the other party to the blacklist. After dialing-three points-harassment interception-blacklist, check it.
4. There may be something wrong with the SIM card. Take a friend's SIM card for a comparative test.
5. All the above have been checked. Maybe it's the phone. First, back up important information and restore factory settings.
OPPO emphasizes the core values of "duty" within the enterprise, including four levels. The first level: "isolate external pressure and temptation, maintain a normal mentality, return to the origin of things, and grasp the reasonable direction that you should do", the second level: "Responsibility is to ask yourself, not others, and you must blame yourself first when problems arise", and the third level: "Responsibility regulates the attitude of cooperation with others.
CEO Chen Mingyong said: "We are in an era full of pressure, temptation and challenges. We are easily influenced by emotions, causing fear, irritability and anxiety, and then making wrong judgments. If you can isolate external forces, always keep your duty, go back to the origin of things and think about why you set out in the first place. In this way, the way to deal with the problem will become clearer.
ColorOS is an Android-based deep customization system launched by OPPO mobile phone, which is intuitive, light, concise and full of design sense. Moral of color name: Life is full of colors, and smart colors make mobile phones glow with distinctive light and vitality.
2065 438+06 03 17, released by ColorOS 3.0. ColorOS 3.0 system continues the gene of fast, stable and economical, and at the same time improves the security performance of mobile phones from four aspects: communication security, payment security, privacy security and application security, ensuring a faster and safer user experience.
2065438+released on May 20th, 2005, ColorOS 2. 1 The guiding principle of "fast, stable and economical" has been clarified, the functions have been simplified, the humanization and interaction that can enhance the user experience have been increased, and the OPPO's always fresh and beautiful appearance and simple and easy-to-use operation logic have been inherited.
2065438+released on March 2, 20041day, ColorOS 2.0. Mainly for the system vision and operating experience, it has been comprehensively upgraded and strengthened. It is a literary and easy-to-use mobile phone operating system, which brings wonderful experience to users.
On September 23rd, 20 13, ColorOS 1.0 was released, which not only customized and optimized the bottom layer of the system, but also incorporated more humanized interactive details, making it more suitable for China consumers in operation.
On April 26th, 20 13, the first beta version was released in OPPO, which was translated into more than 20 national languages such as English, Thai and Indonesian, and was widely used worldwide.