How to Easily Master Format OPPO A78 with Safety Hard Reset?

Tips and tricks to fix OPPO A78 problems. This phone release with Android 13 operating system from beginning. It has 5G connection because powered by Mediatek MT6833 Dimensity 700 processor together with dedicated GPU (graphic processor unit) Mali-G57 MC2 for gaming graphic rendering.

The screen size is 6.56 inches with 90Hz refresh rate. We can see dual camera 50 megapixel for wide + 2 megapixel for depth of field at back side body. There are two network simcard slot for use with two different phone numbers. We will give more solutions and information about how to solve troubles of OPPO A78 at community.

What are Advantages of OPPO A78 Specifications and Features?

  • Network GSM 3G HSDPA or 4G LTE + 5G with Dual simcard slot
  • LLCD 6.56 inches 20:9 aspect ratio
  • Processor Octa-core 2×2.2 GHz Cortex-A76 & 6×2.0 GHz Cortex-A55
  • GPU Mali-G57 MC2
  • Bluetooth / GPS / Wifi / NFC
  • Memory Internal 128 GB
  • RAM 8 GB
  • Main Camera Dual 50 MP f/2.2 + 2 MP f/2.4
  • Main Camera Features autofocus, LED flash
  • Front Camera 8 MP for video conference and selfie photography
  • Operating System Android 12
  • Battery Li-Po 5000 mAh

Complete Solutions To Fix OPPO A78 Camera Issues

Follow this page to solve front or rear camera troubles at OPPO A78

How to Fix or Problem Solving for Recovery OPPO A78 hang or not responding or malfunctions or stuck or freezing or bricked ?

There are many apps and games that we can download from Google Play Store, but we need to read many user reviews before install new or not famous apps. Why? Because some of them may contain malware or threat or viruses. The can stolen our data or install unknown apps without notice.

Our OPPO A78 will get some troubles like become hang or freezing or become slowly or stuck or broken or LCD touch screen not responsive. These kind of apps will not get Verified by Play Protect information / icon.

What do we have to do? Please try to remove temporary files and caches from internal memory by performing soft reset or reboot. We might get some help from antivirus applications like AVAST or NORTON to find suspected application and fix some bad setting options.

We also can clean temporary files and caches anytime by performing reboot or restart. This procedure will not remove any installed applications and important data, therefore we can do this process anytime we want. Please do not install APK from unknown resource for safety reasons.

How to Force Shutdown or Force Soft Reset or Reboot or Restart OPPO A78 ?

OPPO A78 has 8 GB RAM. Some other installed applications also might get hang that make LCD touch screen not responding. We have to force reboot or soft reset or restart by press and hold POWER button until OPPO A78 turning off or shutdown.

Performing reboot or restart is recommended anytime we want, because it can help to make our OPPO A78 become faster. It will remove any temporary files and caches. All applications and data will not removed or wipe because of soft reset or reboot or restart.

How To Make Faster OPPO A78. Improve Performance?

This page will give simple solutions to fix lagging issues on OPPO A78

How to backup data or Contact at OPPO A78 ?

This phone has external memory slot for MicroSDXC memory card. We can copy and paste all important files, photos, videos from internal memory using Android file manager.

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. We also can connect OPPO A78 with flash drive at USB OTG port.

If our OPPO A78 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 Data / Contact / Photos on OPPO A78

We have to backup all data. Follow this page to backup & restore data inside OPPO A78

Please note: These options below may not work for some devices because of firmware update version or hardware troubles or some other possibilities.

#Option 1, Hard Reset OPPO A78 with software menu

  1. Turn on the OPPO A78
  2. Make sure the battery is not empty
  3. Backup important data at OPPO A78 because all data and applications will be erase or delete
  4. Go to Menu : Setting
  5. Choose Tab :General
  6. PressBackup & Reset > Restore factory setting
  7. Better you not check anything at the option if you do not want to erase data at data partition at internal memory
  8. ChooseReset phone
  9. The OPPO A78 will do the master reset process.

hard reset OPPO A78

#Option 2, Hard Reset OPPO A78 Factory Default using Hardware Secret Button Key

If we can not go to menu, or OPPO A78 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

  1. Turn off the OPPO A78
  2. Make sure the battery OPPO A78 already full or more than 50%
  3. Press together and hold thePower Button + Volume Down Button
  4. If the Logo appear, then release the button, after that we will enter some menu
  5. Choosewipe data / factory resetusingVolume Button, and pressPower Buttonto Enter or OK
  6. The OPPO A78 will continue master reset, wait for several minutes until OPPO A78 start like new again.

How to Unlock or Fix or Bypass or Solutions for OPPO A78 forgot password code or security lock screen pattern or pin (lost password)?

We have to make sure all important data, apps and photos videos are always secure from unauthorized people especially when OPPO A78 away from us or stolen or lost. We can use fingerprint that located at side body. 8 megapixel front camera also can be use as facial recognizing.

Please choose secondary protection for backup like pin or password or screen lock pattern. It is use for unlock OPPO A78 after reboot. At this time fingerprint or face detection will not work. However, the problems will start happen when we can not unlock this phone or fingerprint can not work. What should we do?

If we forgot or can not unlock OPPO A78 security protection, then nothing we can do unless doing hard reset or master format using hardware button combination key like steps at #option 2 above. For more security protection, latest Android version has FRP (factory reset protection), therefore it will ask for previous Google account username and password to bypass FRP question.


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 A78 ?

There is no secret hidden code for OPPO A78 to make it back to factory default. We need to choose one following options above to hard reset.

How to Format or Erase Phone Memory at OPPO A78 ?

When we need to remove or wipe any data and applications from OPPO A78, then please performing hard reset or reformat. Please choose Erase all data / Internal storage when our phone has that menu. Performing hard reset or reformat will remove any registered Google account from OPPO A78.

How to Make Battery of OPPO A78 Stronger, Life Longer and Not Fast to Drain ?

OPPO A78 use 5000 mAh battery capacity. We can charge faster because it has 33W fast charging technology. We need to do some adjustment if away from charger. Please make LCD screen brightness as low as possible. We also have to disable all not use connections like NFC or GPS or Bluetooth or WiFi.

Leave a Comment