Tips and tricks to fix OPPO A57 (PFTM20) problems. This phone has 6.56 inches LCD screen size that powered by MediaTek MT6833P Dimensity 810 processor with dedicated GPU Mali-G57 MC2. Therefore we can use 5G connection for Internet. It has 90Hz refresh rate and installed with Android 12 when the first time release at the market. We will give more information and solutions to fix OPPO A57 troubles at www.hard-reset.org community.

 

What are Advantages of OPPO A57 Specifications and Features?

  • Network GSM 3G HSDPA or 4G LTE + 5G with Dual simcard slot
  • LCD 6.56 inches 20:9 aspect ratio + 90Hz
  • Processor Octa-core 2×2.4 GHz Cortex-A76 & 6×2.0 GHz Cortex-A55
  • GPU Mali-G57 MC2
  • Bluetooth / GPS / Wifi
  • Memory Internal 128 GB
  • RAM 6 GB or 8 GB
  • Main Camera Dual 13 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

 

How to Fix or Problem Solving for Recovery OPPO A57 hang or not responding or malfunctions or stuck or freezing or bricked ?

 

OPPO A57 has 128 GB internal memory. We can download many applications and games from Google Play Store. Please be careful before download new or not famous apps, because some of them may contain viruses or threat or malware that can make troubles on our OPPO A57 such as become hang or freezing or slowly or stuck or broken or LCD touch screen not responsive. These kind of apps will not get Verified by Play Protect information / icon. We have to read many user reviews.

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 A57 ?

OPPO A57 has 6 GB or 8 GB RAM options. Some installed applications can get hang and make LCD touch screen not responding. We have to force reboot or soft reset or restart by press and hold POWER button until OPPO A57 turning off or shutdown.

Performing reboot or restart is recommended anytime we want, because it can help to make our OPPO A57 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 backup data or Contact at OPPO A57 ?

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 A57 with flash drive at USB OTG port.

If our OPPO A57 (PFTM20) 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.

 

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 A57 with software menu

  1. Turn on the OPPO A57
  2. Make sure the battery is not empty
  3. Backup important data at OPPO A57 because all data and applications will be erase or delete
  4. Go to Menu :  Setting 
  5. Choose Tab : General
  6. Press Backup & 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. Choose Reset phone 
  9. The OPPO A57 will do the master reset process.

 

hard reset oppo a57 5g 2022

#Option 2, Hard Reset OPPO A57 Factory Default using Hardware Secret Button Key

 

If we can not go to menu, or OPPO A57 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 A57
  2. Make sure the battery OPPO A57 already full or more than 50%
  3. Press together and hold the Power Button + Volume Down Button
  4. If the Logo appear, then release the button, after that we will enter some menu
  5. Choose wipe data / factory reset using Volume Button, and press Power Button to Enter or OK
  6. The OPPO A57 will continue master reset, wait for several minutes until OPPO A57 start like new again.

 

How to Unlock or Fix or Bypass or Solutions for OPPO A57 forgot password code or security lock screen pattern or pin (lost password)?

With 128 GB internal storage capacity, our phone will keep many important data and applications. Please make sure we already protected with fingerprint or face detection to secure all confidential data or photos videos from unauthorized people when OPPO A57 away from us or stolen or lost.

After OPPO A57 reboot or restart, the fingerprint and facial recognizing will not work. We have to unlock using secondary protections like screen lock pattern or password or pin. 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 A57 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.

HOW TO FORCE SOFT RESET OR RESTART OR REBOOT OPPO A57 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 A57 ?

There is no secret hidden code for OPPO A57 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 A57 ?

When we need to remove or wipe any data and applications from OPPO A57, 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 A57.

 

How to Make Battery of OPPO A57 Stronger, Life Longer and Not Fast to Drain ?

OPPO A57 (PFTM20) has big battery at 5000 mAh. It is non removable battery. Many users can use this phone more then one day. If we want to make OPPO A57 battery work more longer, please do some adjustment like make LCD screen brightness as low as possible and turn off all not use connections like GPS or WiFi or Bluetooth. OPPO A57 does not have NFC hardware.