We can use standard screen size 5.2″ from OPPO A57. This phone have dual simcard slot which also can standby together like other Oppo smartphone. The first operating system installed at OPPO A57 is Android Marshmallow. If we are really like OPPO user interface then OPPO A57 already use Color OS version 3.0. The community of www.hard-reset.org will give more information about how to fix OPPO A57 problems.


What is Advantage of OPPO A57 Specifications?

Network GSM 3G HSDPA or with 4G LTE
LCD 5.2 inches
Octa-core 1.4 GHz Cortex-A53
Bluetooth / GPS / Wifi / Fingerprint
Memory Internal 32 GB with 3 GB RAM
External memory 256 GB microSD relpace simcard 2
Camera 13 MP, f/2.2, phase detection autofocus, LED flash
Front Camera 16 MP, f/2.0 for video conference and selfie photography
Operating System Android Marshmallow version 6
Battery Li-Ion 2900 mAh



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

The most important features at most smartphone is about camera result. The camera function at OPPO A57 is very good, it can give bright pictures for main back side camera or front camera for selfie photography. If we are really like to take many pictures, we suggest to use external microSD memory card. But we have to know that OPPO A57 share GSM/CDMA simcard slot 2 with external memory. Therefore if we want to use external memory, then we only can use one GSM/CDMA simcard at simcard slot 1. If we do not want to use external memory, all pictures will be save at 32 Gb internal memory.

Internal memory is very important for applications which are installed from Google Play Store like Facebook, Whatsapp, Instagram, Skype, Line Messenger, Snapchat, WeChat, Viber, Blackberry Messenger (BBM) and many more. They are all will use internal memory for main data saving. Please note, we need to read as many review as possible because some apps from Google Play Store may contain viruses or malware that can make our OPPO A57 become trouble like slowly or hang or stuck or bricks or frozen or boot logo loop or LCD touch screen not responsive. If this problems happen, then we have to force soft reset or reboot or shutdown to clean temporary files and caches. When our OPPO A57 can start and booting again, please install one good antivirus like NORTON or AVAST.

The installed antivirus will scan all installed applications and all content inside our OPPO A57, they also will give information about what to do to make setting options more secure. If the problems still happen, then we have to do 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 also remove all Google account from OPPO A57.


How to Force Shutdown or Force Soft Reset or Reboot or Restart OPPO A57 ?

When some bad applications has been installed inside our OPPO A57, then this phone will act not normal such as LCD touch screen not responsive with our finger touch. What should we do? The first steps to do is doing soft reset or reboot this phone to remove temporary files and caches. Please press and hold POWER button until OPPO A57 shutdown or turn off by itself. This process is safe because it will not remove any important data, therefore we can do this process anytime we want. If our OPPO A57 still can boot normally, but we want to clear temporary files and caches then we can press and hold POWER button until pop-up menu appear, then choose Shutdown / Power off / Reboot menu.



How to backup data or Contact at OPPO A57?

We can use microSD external card to copy or move important files using File Manager applications. If our OPPO A57 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 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

#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 Restore and Reinstall Clean Android Operating system / firmware at OPPO A57 (Reformat) ?


When the first time OPPO A57 introduce and release in the market, Android Marshmallow operating system has been installed inside this phone. Therefore we can directly use OPPO A57 when we open from the box. But some bad or not compatible applications can make OPPO A57 operating system damage or corrupt that can make this phone work strange. What should we do? At this time we have to reinstall or reformat with factory default operating system. First we have to know, that clean factory default Android operating system already saved safely inside OPPO A57 ROM or internal memory. Therefore we do not need to copy or connect with other device. Just follow simple steps to hard reset above, then clean factory default Android operating system will be reinstall automatically at OPPO A57.


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

OPPO A57 have fingerprint which is fast to open security protections. With good camera result, some photos may confidential. Therefore we have to give security protections. There are some factory default security protection like screen lock pattern or password pin protection. They are all already installed inside factory default operating system. Security protections also important to secure our secret data or applications when our phone away from us or stolen or lost.

The problems will be happen when we forgot security protections answer, what should we do? Do not worry, because we can bypass or unlock forgot security screen lock pattern or password pin protections using Google account. Please turn ON this phone, when it ask for security answer, try to give several time wrong answer continuously until our OPPO A57 locked or freezing 30 seconds, at this time we can find Forgot Password / Pattern button. Press this button to type our Gmail username and password that we have already signed-in before. If we can not access our Gmail account, then we have to do hard reset using hardware button combination key.


How to Improve Performance OPPO A57 to make run more faster?

Base by specifications of OPPO A57, this phone can work almost all applications without problems because OPPO A57 use Qualcomm MSM8940 Snapdragon 435 which have Octa-core 1.4 GHz Cortex-A53 and also dedicated GPU (graphic processor unit) Adreno 505 for play 3D HD games without problems and no lag. But why some users get some slowly trouble? Usually because applications trouble. Please note, there are some applications which installed from Google Play Store will keep run in the background to wait data update, like social media or chatting or games. If many of applications run together, then our OPPO A57 RAM and processor resources will become insufficient and make this phone run slowly. We have to uninstall some not use applications. If we want to make our OPPO A57 run faster again like new, then please consider to do hard reset or master format.


How to Upgrade OPPO A57 to Android Nougat Update?

OPPO A57 by default use Android Marshmallow and this OS run without problems, all functions working good as wel. We still not get any information about when OPPO A57 get official Android Nougat OS. However, we are recommended to use official firmware because all features are working good without problems. We will get some firmware upgrade to fix several bugs and improve features. Please do not install with custom ROM for rooted OPPO A57 because some wrong steps can make our phone become damage or corrupt.


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. Do the options above to hard reset it.


How to Format or Erase Phone Memory at OPPO A57 ?

There are two phone memory type at OPPO A57, one is internal memory and the other one is external memory. If we want to format internal memory phone then we have to do hard reset or reformat the operating system of OPPO A57 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 A57 Stronger, Life Longer and Not Fast to Drain ?

With 2900 mAh battery, some users can run OPPO A57 for one day full without recharge. But as we know some users also use OPPO A57 too much for watching several full movie streaming or offline video or playing games for several hours. The battery of OPPO A57 will not enough and fast to empty. We have to do some adjustment such as turn lowest LCD screen brightness as possible, especially when we are not in the bright sunlight. Next adjustment is turn off all not use connections like GPS or Bluetooth or Wifi. If some installed applications ask for GPS functions, then we can try to set GPS Battery Saving Mode from menu Setting.



Latest hard-reset.org Discussions & Share Information:

[Q] Iam using oppoA57.. when we click wipe data. It asking pin number.. but I forgot the pin number.. what to do to unlock screen because I forgot the pin number to unlock screen
[A] Hi, please try to hard reset using hardware button combination key like steps at #option 2 above. It will reformat your Oppo A57 operating system to factory default. Because that steps start from Off state, then it will not ask for any pin number to reformat or wipe data.

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