Tips and tricks to fix ONEPLUS 9 PRO problems. This phone comes with 5G broadband access at dual simcard slot standby together. It is powered by Qualcomm SM8350 Snapdragon 888 5G processor that has dedicated GPU (graphic processor unit) Adreno 660 for fast graphic rendering. The Android 11 operating system already installed when we open from the box, together with OxygenOS Oneplus user interface.

The screen use LTPO Fluid2 AMOLED with smooth 120 Hz refresh rate. The LCD size is 6.7 inches Full HD+  1440 x 3216 pixels resolution. This phone has IP68 rating for water proof 1.5 m depth for about 30 minutes. Some issues happen on ONEPLUS 9 PRO software and hardware. Therefore we will try to give more solutions, reviews and information about how to solve troubles of ONEPLUS 9 PRO at community. This phone has several product models LE2121, LE2125, LE2123, LE2120.


What is Advantage of ONEPLUS 9 PRO Specifications and Features :

  • GSM 3G HSDPA + 4G + 5G GSM+GSM (Dual Sim)
  • LCD 6.7 inches
  • Internal memory 128 GB or 256 GB with 8 GB RAM
  • Internal memory 256 GB with 12 GB RAM
  • Main Camera Quad 48 MP f/1.8 + 8 MP f/2.4 + 50 MP f/2.2 + 2 MP f/2.4
  • Main Camera features phase detection autofocus, EIS (gyro), dual-LED flash
  • Front Camera 16 MP for selfie photography
  • Processor Octa-core 1×2.84 GHz Kryo 680 & 3×2.42 GHz Kryo 680 & 4×1.80 GHz Kryo 680
  • GPU Adreno 660
  • Operating system Android 11
  • Battery Li-Po 4500 mAh



How to Fix or Problem Solving for Recovery ONEPLUS 9 PRO hang or not responding or malfunctions or stuck or freezing or bricked ?

There are two options of internal storage with 128 GB or 256 GB. All version does not have external memory for MicroSDXC card. With high-end processor and GPU, we can run all applications and games from Google Play Store.

But we have to know that some apps may contain viruses or malware that can make troubles if installed on our ONEPLUS 9 PRO like become slowly or hang or bootloop or bricks or frozen or stuck or LCD touch screen not responding with our finger touch. These kind of apps will not get Verified by Play Protect information. Please read many user reviews before download that kind of apps.

What do we have to do? First we have to try do soft reset or reboot or restart to remove temporary files or caches that can make some trouble at this phone. If our ONEPLUS 9 PRO can boot again, then please directly download one good antivirus applications from Google Play Store like AVAST or NORTON, please choose only one.. The antivirus will scan all installed applications and give recommendation setting to our phone.

If the problems still happen, then next step is doing hard reset or master format. Please note, doing hard reset will remove or erase all important data, therefore we have to backup all data first before doing master format. Doing hard reset will remove all Google account from ONEPLUS 9 PRO. For safety reasons, please do not install any unknown APK files, because it is very easy to make our phone getting trouble.


How to Force Shutdown or Force Soft Reset or Reboot or Restart ONEPLUS 9 PRO ?

This phone has big RAM for running multitasking applications and games. This phone has 8 GB or 12 GB RAM option. However, some installed apps may crash or corrupt and make troubles at this phone such as hang or LCD touch screen not responsive. We have to remove temporary files or caches from ONEPLUS 9 PRO. Please press and hold POWER button until ONEPLUS 9 PRO shutdown or turn off by itself. After it 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 ONEPLUS 9 PRO 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 ONEPLUS 9 PRO ?

We can use USB flashdrive to copy or move important files using File Manager applications. If our ONEPLUS 9 PRO 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.


#Option 1, Hard Reset ONEPLUS 9 PRO with menu setting:

This is the option that we can do if this phone still can access the menu setting, then try to reset ONEPLUS 9 PRO with this step:

  1. Please Turn on the ONEPLUS 9 PRO
  2. Please make sure to charge the battery until full or more then 50% capacity
  3. Make sure you already backup all important data, because it will deleted from ONEPLUS 9 PRO
  4. Go to Menu Setting > Backup & Reset > Factory Data Reset
  5. Choose Reset Phone, continue with Erase Everything
  6. The ONEPLUS 9 PRO will do the master reset until it finish


hard reset oneplus 9 pro

#Option 2, Hard Reset ONEPLUS 9 PRO with hardware button key:


In some situations, the ONEPLUS 9 PRO is not responding, so nothing happen when we navigate or touch the screen, in this step try to hard reset with hardware key by this step:

  1. Make sure you have fully charge the ONEPLUS 9 PRO
  2. We should try to backup all important data if we can, because all data will be erased or wipe from this phone
  3. We can do this procedure at any conditions phone On or Off
  4. Press together Power Button + Volume Down together for several second until the logo icon appear, then release all button
  5. at LCD screen please choose Language to English by touch it
  6. at LCD screen please choose Wipe data and caches it will ask twice
  7. at LCD screen please choose Yes when asking for wipe or erase all data
  8. The ONEPLUS 9 PRO will do the master reset for several minutes, just wait until it finish.


How to Unlock or Fix or Bypass or Solutions for ONEPLUS 9 PRO forgot password code or security lock screen pattern or pin (lost password)?

With big free storage, we will install more applications for support our activity. Some of them may have important data. We also will have some private photos and videos that taken from quad rear camera 48 megapixel for wide + 8 megapixel for telephoto 3.3x optical zoom + 50 megapixel for ultrawide + 2 megapixel for monochrome. We have to secure all data from unauthorized people when ONEPLUS 9 PRO away from us or stolen or lost.

Fingerprint is located under display. Please remove any additional screen protection or tempered glass if the fingerprint less accurate. We can use front camera for facial recognizing. The secondary protection need to activate for backup.

ONEPLUS 9 PRO fingerprint or face detection will not work after reboot o restart. We have to unlock one time with secondary protection. However, the problems will start happen when we can not unlock this phone or forgot security answer or fingerprint sensor can not open with our finger-hand. What should we do?

Do not worry about this trouble, because Android already give solutions when we forgot security screen lock pattern or password pin protections. We need to do hard reset using hardware button combination key to bypass protection. Please note, ONEPLUS 9 PRO already use latest Android version with FRP (factory reset protection). It is important to secure our phone from stolen or lost, because after finish hard reset, this phone will ask for Verify your account with previous Google account. Please keep and remember our Gmail account carefully


Is That Any Secret Code for Doing Format ONEPLUS 9 PRO ?

There is no secret hidden code for ONEPLUS 9 PRO to make it back to factory default. Do the options above to hard reset it.


How to Format or Erase Phone Memory at ONEPLUS 9 PRO ?

If we want to format internal memory phone then we have to do hard reset or reformat the operating system of ONEPLUS 9 PRO 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.


How to Make Battery of ONEPLUS 9 PRO Stronger, Life Longer and Not Fast to Drain ?

This phone has less power processor Qualcomm SM8350 Snapdragon 888 5G that has 5 nm FinFET technology. The battery has fast charging 65W for quick charge 4500 mAh capacity. Many people can work full one day for standard activity. If we use this phone too much, for watch movie or play games, then please do some adjustment.

The standby connection still consume some battery power, please disable all connections like GPS or Bluetooth or Wifi or NFC. We have to reduce LCD screen brightness as low as possible.