According to OPPO the handsets offer users “stable, uncompromised 5G connections.”
In order to achieve this engineers focused on the position of the phone’s antenna, which can impact the quality of a smartphone's signal.
Signal quality degrades when phones are held in certain positions, as the antenna can be covered up by users' hands.
To counter this problem, in 2020 OPPO released a groundbreaking 360-degree antenna design for its Reno 3 smartphone. The innovative design saw the antenna arranged along the outer frame of Reno 3's frame, “which allowed it to have a better signal regardless of whether it was held horizontally or vertically,” OPPO wrote in a press release.
This development was particularly important for gamers, the company said, since many AAA smartphone titles are played horizontally to maximise the use of the screen.
Because of this many regular phones used by gamers may suffer from “poor signal, slower speeds and lag, giving them a noticeable competitive disadvantage,” OPPO notes.
OPPO's engineers also had to overcome the challenge of providing uninterrupted connection in weak-signal locations like parking lots or trains.
Typically, smartphones overcome this problem by using a component called a power amplifier (PA), which amplifies a smartphone's signal enough to provide users with a strong and stable connection.
But most phones only have one PA for a corresponding frequency band, which means that it's up to this single PA to choose the most suitable of four antennas in a phone to receive the signal.
To solve this issue, OPPO's engineers worked on the Dual PA Four-way Connection System which was first launched in its Find X5 Pro.
The four-way system has a patented fast matching algorithm, which enables the phone “to select the PA that's most suitable for sending and receiving signals at any given time automatically.”
As well as these improvements to smartphone hardware, OPPO said it has spent the past few years actively promoting the development and adoption of 5G around the world, in addition to submitting 5G communication standard patents in more than 30 countries and regions around the world.
In 2021, OPPO became one of the top ten companies in the world for holding one of the highest numbers of 5G-specific patents.