How to Easily Master Format OPPO A15S with Safety Hard Reset?

Tips and tricks to fix OPPO A15S problems. This is Helio smartphone using Mediatek MT6765 Helio P35 processor with dedicated GPU (graphic processor unit) PowerVR GE8320 for support graphic rendering. The operating system still use Android 10 together with ColorOS 7.2 and can not run 5G connection.

It has dual simcard slot with 4G LTE broadband standby together, but we only can received one call at one time. The screen use IPS 6.53 inches HD resolution at 720 x 1600 pixels. Software or hardware troubles happen on some OPPO A15S. We will try to give more solutions, reviews and information about how to solve troubles of OPPO A15S (CPH2179) at community.

What are Advantages of OPPO A15S Specifications and Features?

  • Network GSM 3G HSDPA or 4G LTE with Dual simcard slot
  • LCD 6.52 inches 20:9 aspect ratio
  • Processor Octa-core 4×2.35 GHz Cortex-A53 & 4×1.8 GHz Cortex-A53
  • GPU PowerVR GE8320
  • Bluetooth / GPS / Wifi
  • Memory Internal 64 GB
  • RAM 4 GB RAM
  • Main Camera Triple 13 MP f/2.2 + 2 MP f/2.4 + 2 MP f/2.4
  • Main Camera Features autofocus, LED flash
  • Front Camera 8 MP for video conference and selfie photography
  • Operating System Android 10
  • Battery Li-Po 4230 mAh

Solution To Fix Camera Issues On OPPO A15S

How to Fix or Problem Solving for Recovery OPPO A15S hang or not responding or malfunctions or stuck or freezing or bricked ?

Internal memory will use to keep all installed applications when download from Google Play Store. This phone has 64 GB internal storage and still can be extend with external memory MicroSD / MicroSDXC card.

Beside download important apps, we have to be careful to download new or not famous applications, because they may contain viruses or malware that can make troubles if installed on our OPPO A15S (CPH2179) like become slowly or hang or stuck or broken or frozen or LCD touch screen not responsive. We need to read several user reviews before download that apps These kind of apps will not get Verified by Play Protect information / icon.

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 A15S. We are not recommended to install APK from unknown resource for safety reasons.

How To Fix Lagging Slowly Issues On OPPO A15S?

How to Force Shutdown or Force Soft Reset or Reboot or Restart OPPO A15S ?

This phone has 4 GB RAM for multitasking. Sometime installed applications may crash or corrupt. Our OPPO A15S will not run normally such as 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 A15S 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 A15S 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 A15S ?

This phone has external memory slot for MicroSD / MicroSDXC. We can backup all important files or photos videos from internal memory to external memory using default 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.

If our OPPO A15S 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 / Photos / Contact On OPPO A15S

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 A15S with software menu

  1. Turn on the OPPO A15S
  2. Make sure the battery is not empty
  3. Backup important data at OPPO A15S 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 A15S will do the master reset process.

hard reset oppo a15s

#Option 2, Hard Reset OPPO A15S Factory Default using Hardware Secret Button Key

If we can not go to menu, or OPPO A15S 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 A15S
  2. Make sure the battery OPPO A15S 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 A15S will continue master reset, wait for several minutes until OPPO A15S start like new again.

How to Unlock or Fix or Bypass or Solutions for OPPO A15S forgot password code or security lock screen pattern or pin (lost password)?

After use several months, we will have many important data inside our OPPO A15S (CPH2179). With triple rear camera 13 megapixel for wide and dual 2 megapixel for macro and Dof / Bokeh effect, we also will have many private photos videos. We need to secure all confidential data from unauthorized people when OPPO A15S away from us or lost or stolen.

Fingerprint sensor is available on back side body. We will ask to register our finger several time. We also can use 8 megapixel front camera for face unlock recognizing. Secondary protections have to be choose because it will work as backup protections. We can use screen lock pattern or password or pin.

Please note, fingerprint or face detection will not work on OPPO A15S (CPH2179) after restart or reboot or soft reset. This phone will ask for activating one time using secondary protections. However, 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 A15S 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 toVerify 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 A15S, because it can help us to bypass forgotten security protections.


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 A15S ?

There is no secret hidden code for OPPO A15S to make it back to factory default. Do the options above to hard reset it.

How to Format or Erase Phone Memory at OPPO A15S ?

If we want to format internal memory phone then we have to do hard reset or reformat the operating system of OPPO A15S 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 A15S Stronger, Life Longer and Not Fast to Drain ?

With 4230 mAh non removable battery, we can work full one day without recharge the battery. However, if we work too much for active social media or watching movie or playing games several hours continuously, then OPPO A15S battery will not enough.

Suggestions to make OPPO A15S (CPH2179) work more longer are try to adjust screen brightness as low as possible, we also have to disable all not use connection like GPS or Wifi or Bluetooth. Because this phone has cheap selling price, then NFC is removed or disabled from OPPO A15S.

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