Easy solutions to fix OPPO K9 PRO running slowly troubles. This phone release with Android 11 operating system with ColorIS 11.3. the screen size is 6.43 inches using AMOLED. This phone use MediaTek MT6893 processor, it should run fast for any applications, but some users get lagging issues after use this phone for several months. Why this problems happen? Please read some information about how to make OPPO K9 PRO run more faster.


Why OPPO K9 PRO Performance Become Slow and Not Responsive ?

We need to see the processor hardware, because it is effect to speed performance. OPPO K9 PRO use MediaTek MT6893 Dimensity 1200 5G that design for fast 5G broadband and good AI performance. This processor has total octa core cpu and divided into three cluster. The fastest performance run with single core 3.0 GHz Cortex-A78. It is supported with second cluster with triple core 2.6 GHz Cortex-A78. The last cluster use for light applications use quad core 2.0 GHz Cortex-A55 for battery efficiency.

OPPO K9 PRO mediatek processor

The slowly performance happen usually because this phone run too many applications together whether in the background or foreground. Moreover, some bad developers create bad apps that consume too much processor and RAM resources. This phone has 8 GB RAM for multitasking. This RAM will be not enough if many applications run together.


When OPPO K9 PRO RAM is not enought, this phone will try to look for idle applications for force close to give more RAM resources. When this process happen, OPPO K9 PRO will freezing for a while. Please do not install or run too many applications together.

In many case, the lagging troubles will happen when run too many applications together, it will consume more RAM and processor resources. Therefore we suggest to uninstall some not use applications if we do not really use that apps. Some of them will run in the background to wait data update and consume more RAM. Remove some applications will help this phone to run more faster.

how to fix lagging problems on oppo k9 pro

It is important to free up some internal storage capacity on OPPO K9 PRO, because beside RAM, if the internal storage is full, then the performance of OPPO K9 PRO also will be reduced or become slowly.

Some issue of OPPO K9 PRO lag happen because of applications. But we also find some OPPO K9 PRO become lagging because the usage of non original firmware or custom rom.


Why OPPO K9 PRO Lagging or Slowly When Playing Some Games ?

OPPO K9 PRO has MediaTek MT6893 Dimensity 1200 5G processor with Mali-G77 MC9 GPU. We can play fast with this phone because it has MediaTek HyperEngine 3.0 for improve gaming performance. The screen also has fast refresh rate 120Hz for smooth transition. However, usually slowly or lagging gaming also happen because insufficient RAM. Please try to soft reset our OPPO K9 PRO before playing heavy gaming for clean all previous applications temporary files and caches.



How to Boost Speed Performance of OPPO K9 PRO And Make It Run More Faster?

  1. First steps that you should do is doing soft reset or reboot to remove temporary files and caches. Usually after our phone finish reboot, then the speed performance might become faster.
  2. Please uninstall all not use applications. We can try to find from menu Setting > App Management > App list, and choose/select any applications that we do not use anymore, then choose Uninstall
  3. Some factory default applications do not have Uninstall button options, but we can disable that Apps on OPPO K9 PRO with: Settings > Additional Settings > Developers Options (must activate first) > Disabled Apps, and choose/select which applications that we want to disable. This steps also can reduce the usage of RAM and processor resources.
  4. Please periodically run optimization applications on OPPO K9 PRO. Open Security Center apps (or Phone Manager on some version) > Clean & accelerate or choose Full clean up. This steps will remove any not use files inside OPPO K9 PRO. We can continues use this menu for scan for further optimization.
  5. If all solutions still not improve the performance, then please consider to do hard reset to factory default. Follow steps at OPPO K9 PRO Hard Reset / Reformat page using hardware button combination Key.

Please note, some menu options will be different because firmware update or some other possibilities. Please use comment options bellow for other question to discuss.