Tips and tricks to fix OPPO K9 problems. This is mid-end smartphone that already has 5G broadband Internet connection with dual simcard slot standby together. This phone powered by Qualcomm SM7250-AC Snapdragon 768G 5G processor with dedicated GPU (graphic processor unit) Adreno 620. Android 11 together with ColorOS 11.1 is ready to use when we open from the box.
The screen use Super AMOLED with 90 Hz refresh rate. The LCD size is 6.43 inches Full HD+ resolution at 1080 x 2400 pixels. Small punch hole is located at top right screen for 32 megapixel front camera. There are some hardware or software issues that may happen on OPPO K9. We will give more solutions, reviews and information about how to solve OPPO K9 (PEXM00) troubles at www.hard-reset.org community.
What are Advantages of OPPO K9 Specifications and Features?
- Network GSM 3G HSDPA or 4G LTE + 5G with Dual simcard slot
- LLCD 6.43 inches 20:9 aspect ratio
- Processor Octa-core 1×2.8 GHz Kryo 475 Prime & 1×2.4 GHz Kryo 475 Gold & 6×1.8 GHz Kryo 475 Silver
- GPU Adreno 620
- Bluetooth / GPS / Wifi
- Memory Internal 128 GB or 256 GB
- RAM 8 GB
- Main Camera Triple 64 MP f/1.7 + 8 MP f/2.2 + 2 MP f/2.4
- Main Camera Features autofocus, LED flash
- Front Camera 32 MP for video conference and selfie photography
- Operating System Android 11
- Battery Li-Po 4300 mAh
Solutions To Fix Camera Issues On OPPO K9
How to Fix or Problem Solving for Recovery OPPO K9 hang or not responding or malfunctions or stuck or freezing or bricked ?
We can use 128 GB or 256 GB internal storage version. If we have budget, we suggest to buy 256 GB, because we can not use additional MicroSDXC because it does not have external memory slot. However, with 128 GB or 256 GB, we still can install many interesting games and applications from Google Play Store.
We have to be careful when download new or not famous applications, because they may contain viruses or malware that can make troubles if installed on our OPPO K9 like become slowly or hang or stuck or broken or frozen or LCD touch screen not responsive. These kind of apps will not get Verified by Play Protect information / icon. Therefore we have to read many user reviews before install that kind of apps.
If we get this problem, we have to try remove temporary files and caches inside this phone, because some troubles can be solve with this steps. If we are suspected infected by virus, then please install one good antivirus like Avast or Norton, then scan all content inside this phone.
However, if the problems still happen, then we have to do hard reset to reformat our phone. Please remember, doing hard reset or master format can make our important data removed or wiped from this phone, this is also happen with all Google account which will remove from OPPO K9. We are not recommended to install APK from unknown resource for safety reasons.
Solutions To Fix Slowly Issues On OPPO K9
How to Force Shutdown or Force Soft Reset or Reboot or Restart OPPO K9 ?
This phone mid end smartphone has big RAM at 8 GB for multitasking. However, sometime installed applications may crash or corrupt. Our OPPO K9 will not run normally such as become hang or LCD touch screen not responding with any finger touch. We need to do soft reset or reboot to remove temporary files and caches. Please press and hold POWER button until OPPO K9 shutdown or turn off by itself.
After this phone totally off, then we can press again POWER button to turn it ON. This process will not remove any important data, therefore we can do this process anytime we want. If our OPPO K9 still can work properly, but we want to clear temporary files and caches from some applications, then please press and hold POWER button until pop-up menu appear, continue choose Shutdown / Power off / Reboot menu.
How to backup data or Contact at OPPO K9 ?
We can use USB data cable to connect with computer. After our phone recognize by computer, then choose important files using computer file manager and copy to safety location at our computer.
If our OPPO K9 has already signed in with Google account, by default our contact will be synchronize in the background to Google server. Please make sure we check all contact at Google contact server using Internet browse to make sure backup is done.
More Complete Solutions To Backup & Restore Contact / Photos / Data On OPPO K9
Please note: These options bellow may not work for some devices because of firmware update version or hardware troubles or some other possibilities.
#Option 1, Hard Reset OPPO K9 with software menu
- Turn on the OPPO K9
- Make sure the battery is not empty
- Backup important data at OPPO K9 because all data and applications will be erase or delete
- Go to Menu : Setting
- Choose Tab :General
- PressBackup & Reset > Restore factory setting
- Better you not check anything at the option if you do not want to erase data at data partition at internal memory
- ChooseReset phone
- The OPPO K9 will do the master reset process.
#Option 2, Hard Reset OPPO K9 Factory Default using Hardware Secret Button Key
If we can not go to menu, or OPPO K9 can not turn on or hang or stuck or frozen so we can not access the menu setting or nothing happen while touch the screen, then try to factory reset with secret button and hardware key
- Turn off the OPPO K9
- Make sure the battery OPPO K9 already full or more than 50%
- Press together and hold thePower Button + Volume Down Button
- If the Logo appear, then release the button, after that we will enter some menu
- Choosewipe data / factory resetusingVolume Button, and pressPower Buttonto Enter or OK
- The OPPO K9 will continue master reset, wait for several minutes until OPPO K9 start like new again.
How to Unlock or Fix or Bypass or Solutions for OPPO K9 forgot password code or security lock screen pattern or pin (lost password)?
We will have many important data after install many applications. We also will have several private photos and videos that taken from three back side camera with 64 megapixel for wide + 8 megapixel for ultrawide + 2 megapixel for Macro and DoF or Bokeh Blur effect. Therefore we have to backup all important data from unauthorized users when OPPO K9 away from us or stolen or lost.
This phone use under display fingerprint. If some users get issues with not accurate fingerprint, then usually because thick non standard screen protection or tempered glass. We have to remove any additional screen protection to make OPPO K9 fingerprint work more accurate and faster.
Front camera can be use for face unlock recognizing. The secondary protection is needed to activate for backup such as screen lock pattern or password or pin. We have to know that fingerprint or face detection will not work after OPPO K9 reboot or soft reset or restart. We have to unlock using secondary protection for the first time. However, the problems will start happen when we can not unlock this phone or fingerprint can not work. What should we do?
Don’t worry because we can unlock or bypass forgotten screen lock pattern or password pin protections at OPPO K9 use registered Google account. But we have to force hard reset or master format using hardware button combination key like steps at #Option 2 above. New OPPO smartphone already use latest Android version already implement FRP (Factory Reset Protection). FRP is important to secure our phone when it is stolen or lost. Android will ask toVerify your account with previous Google Account. This procedure target is to make sure that this phone is really belong to us.
At some Android version, we can bypass using previous installed Google account username and password after finish performing hard reset or master format. But at some other version update, we still have to type our screen lock pin or password protections. We can bypass using software at personal computer, but these steps are complicated for many users. Therefore we suggest to ask OPPO service center for bypass protections, but we have to proof that this is our phone. We also recommended to activate or create OPPO ACCOUNT at OPPO K9, because it can help us to bypass forgotten security protections.
HOW TO FORCE SOFT RESET OR RESTART OR REBOOT OPPO K9 LOCKED SMARTPHONE?
If we can not turn off our OPPO smartphone, then please force soft reset or reboot by press POWER BUTTON + VOLUME UP BUTTON for several seconds (usually less then 10 seconds) until this phone reboot by itself.
Is That Any Secret Code for Doing Format OPPO K9 ?
There is no secret hidden code for OPPO K9 to make it back to factory default. Do the options above to hard reset it.
How to Format or Erase Phone Memory at OPPO K9 ?
If we want to format internal memory phone then we have to do hard reset or reformat the operating system of OPPO K9 as well. Please use menu setting to do hard reset or reformat using #option 1 above, but make sure to give checkbox mark at Erase Internal SD card / Internal storage. Then it will reformat the factory default operating system and remove or erase any data inside internal memory.
To reformat or wipe or erase all data at external memory, we can use menu Setting > Storage > Erase Internal Storage / SD Card. Please always make sure all data has already backup before reformat or wipe everything, because it is hard to recover formatted / wiped data at internal or external storage.
How to Make Battery of OPPO K9 Stronger, Life Longer and Not Fast to Drain ?
OPPO K9 (PEXM00) work with 4300 mAh non removable battery with fast charging 65W technology. Many users can use this phone full one day without need to recharge. However, if we want to make OPPO K9 battery work more longer, please make LCD screen brightness as low as possible and disable all not use connections like GPS or Bluetooth or Wifi. NFC is not available on OPPO K9.