1. Check the packing box: find the packing box when buying, and the production date is marked on the packing box. There are instructions on the labels of most boxes.
2. Auto-query of mobile phone: Enter *#6776# through the dial key of the mobile phone, and all the information of the mobile phone will pop up-find the construction time, including the date and time of manufacture.
3. View in mobile phone settings: click on mobile phone settings-About mobile phone-baseband version (the last line is the factory date). There is also a dated kernel version (the last number).
4. Open the back cover of the mobile phone, take out the battery, look at the label, find the line at the beginning of S/N, find the line at the beginning of S/N, and a string of numbers after the colon is the date indicating the year, month and day.
5. Go to the mobile phone store where you bought your mobile phone and check the records.
Innovative technology
OPPO has always attached great importance to technological innovation. By July 20 16, the disclosure of OPPO patent application had entered the TOP 10 list of domestic local applicants. This is the first time that OPPO has entered this list 12.
By September 5th, 20 16, OPPO had publicly applied for 8683 patents. There were 7576 applications for invention patents, of which 87.3% were for invention patents. For OPPO, its patents are more concentrated in the fields of taking pictures, rotating cameras, and VOOC flash charging.
Baidu encyclopedia: OPPO mobile phone