Tips and tricks to fix OPPO A12 (CPH2083 / CPH2077) problems. This is non 5G smartphone, but we can get 4G LTE data broadband with dual simcard slot nano-sim. When the first time release in the market, OPPO A12 use Android Pie 9.0 as factory default operating system together with Oppo user interface ColorOS 6.1. The full screen 6.22 inches HD resolutions 720 x 1520 pixels is use at front body with notch drop for 5 megapixel front camera. OPPO A12 use 64 bit Mediatek processor MT6765 Helio P35 which have dedicated GPU (Graphic Processor Unit) PowerVR GE8320. Some users get issue with their OPPO A12 software or hardware. We will try to give more information about how to solve troubles of OPPO A12 (CPH2083 / CPH2077) at www.hard-reset.org community.

 

What is Advantage of OPPO A12 Specifications?

  • Network GSM 3G HSDPA or 4G LTE with Dual simcard slot
  • LCD 6.22 inches 19:9 aspect ratio
  • Processor Octa-core 4×2.35 GHz Cortex-A53 & 4×1.8 GHz Cortex-A53
  • Bluetooth / GPS / Wifi
  • Memory Internal 32 GB with 3 GB RAM
  • Memory Internal 64 GB with 4 GB RAM
  • GPU PowerVR GE8320
  • Main Camera Dual 13 MP f/2.2 + 2 MP f/2.4
  • Main Camera Features autofocus, LED flash
  • Front Camera 5 MP for video conference and selfie photography
  • Operating System Android Pie 9.0
  • Battery Li-Po 4230 mAh

 

How to Fix or Problem Solving for Recovery OPPO A12 hang or not responding or malfunctions or stuck or freezing or bricked ?

 

OPPO A12 is cheap smartphone with Mediatek MT6765 Helio P35 processor and have two options of internal memory, start from 32 GB with 3 GB RAM and more expensive one use 64 GB internal storage with 4 GB RAM. We can install many applications from Google Play Store. If we want to have more storage, then we can extend with external memory MicroSD.

We suggest to install only important and famous applications like WeChat, Skype, Facebook, Instagram, Kakaotalk, Whatsapp, Telegram and something like that, because some not famous or new apps usually may contain viruses or malware that can make our OPPO A12 (CPH2083 / CPH2077) become 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. Please read several 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 A12. We are not recommended to install APK from unknown resource for safety reasons.

 

How to Force Shutdown or Force Soft Reset or Reboot or Restart OPPO A12 ?

This phone have standard RAM, but installed apps may crash or corrupt that can make troubles at OPPO A12 like 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 A12 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 A12 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 A12 ?

 

Please use MicroSD to backup all important data inside this phone. We have to choose important data using Android File Manager, then copy that folders and paste to External memory MicroSD.

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 A12 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 bellow may not work for some devices because of firmware update version or hardware troubles or some other possibilities.

#Option 1, Hard Reset OPPO A12 with software menu

  1. Turn on the OPPO A12
  2. Make sure the battery is not empty
  3. Backup important data at OPPO A12 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 A12 will do the master reset process.

 

hard reset oppo a12

#Option 2, Hard Reset OPPO A12 Factory Default using Hardware Secret Button Key

If we can not go to menu, or OPPO A12 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 A12
  2. Make sure the battery OPPO A12 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 A12 will continue master reset, wait for several minutes until OPPO A12 start like new again.

 

How to Unlock or Fix or Bypass or Solutions for OPPO A12 forgot password code or security lock screen pattern or pin (lost password)?

This phone have fingerprint sensor at back side of body. The fingerprint will ask to activate when the first time turn on and open from the box. We should secure all important data inside OPPO A12 from unauthorized users, especially when OPPO A12 lost or stolen or away from us.

After register fingerprint protection, we need to choose secondary protections like screen lock pattern or password pin protection for backup. 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 A12 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 to Verify 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 A12, because it can help us to bypass forgotten security protections.

HOW TO FORCE SOFT RESET OR RESTART OR REBOOT OPPO A12 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 A12 ?

There is no secret hidden code for OPPO A12 to make it back to factory default. Do the options above to hard reset it.

 

How to Format or Erase Phone Memory at OPPO A12 ?

If we want to format internal memory phone then we have to do hard reset or reformat the operating system of OPPO A12 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 A12 Stronger, Life Longer and Not Fast to Drain ?

OPPO A12 (CPH2083 / CPH2077) use 4250 mAh non removable battery. This phone does not have fast charging technology. If we want to make OPPO A12 battery work more longer, then please do some adjustment like make LCD screen brightnees as low as possible and disable all not use connections like GPS or Bluetooth or Wifi. Because OPPO A12 sell with cheap price, then NFC data connections is not available.

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