In a recent press release, OPPO opened the door to its development and testing process. The company said that circuitry for the Find X5 Pro are printed on to the motherboards by robotic printers that can produce up to 10 million boards a month.
High-speed modular machines mount components like the CPU and capacitors onto the board at a level of accuracy that would likely be impossible with the human hand.
The smallest component measures just 0.4mm by 0.2mm, and the chip mounter can place more than 400,000 components an hour. To ensure this process is without glitches, OPPO said it uses an Auto Optical Inspector camera to check for any minute errors in the process.
The company said: “Every pathway on the OPPO Find X5 Pro motherboard is bespoke, each component is either custom-designed or carefully chosen. The Auto Optical Inspector is programmed to notice any slight deviation from the blueprint.”
Once the printing is complete the motherboard is baked to melt the metal powder into a rigid conductive map.
“Every part of this process is carefully controlled, from the humidity and temperature of the factory floor to X-ray testing of the solder every two hours to check its quality,” OPPO said.
A solder paste inspection machine (SPI) is used to review each board. According to OPPO, 90 percent of the testing is automated, meaning its production experts only need to step if they see any potential issue. Each phone’s camera is then subjected to OIS lens stabilization tests to test both the lens image stabilization and the sensor image stabilization.
While every device must undergo the lens stabilization tests, a small number of devices are tested to breaking point inside OPPO’s QE Reliability Lab. The reliability lab makes sure the original design can handle real-world stresses through the use of over 150 tests.
The tests include tumble tests and drop tests, the later test involving the device being dropped from a height of 10 centimeters to more than 28,0000 times. For further testing of durability, the phone undergoes waterproofing and rainproofing tests.