How to Easily Master Format LENOVO A850 with Safety Hard Reset?

Tips and tricks for solving LENOVO A850 / A850+ problem. When we need Android smartphone with big LCD screen and reasonable price, then LENOVO A850 is the answer. Because LENOVO A850 have 5.5 inches LCD screen width IPS capacitive touch screen. If we like to take pictures a lot, LENOVO A850 will help you to fulfill that need by using 5 megapixel digital camera and also have LED flash to help taking better photo in low light conditions.

 

What is the different between LENOVO A850 vs LENOVO A850+ (PLUS) ?

Actually almost all specification are not different between A850 compare with A850 PLUS, except A850 PLUS using newer processor Mediatek MT6592M that can give maximum clock speed at Octa-core 1.4 GHz with faster GPU (graphic processor unit)  Mali-450MP4 to play 3D HD Games without problems at the same 5.5. inches LCD screen.

 

What is Advantage of LENOVO A850 / A850+ (PLUS) Specifications:

GSM 3G HSDPA Dual SIM GSM-GSM
LCD 5.5 inches touch screen
Internal memory 4GB
RAM 1GB
External memory microSD, up to 32 GB
Main Camera 5 MP, 2592х1944 pixels, autofocus, LED flash
Front camera for VGA for Picture and Video conference
Processor Quad-core 1.3 GHz Cortex-A7 for LENOVO A850
Processor Quad-core 1.4 Ghz Cortex-A7 for LENOVO A850 PLUS
GPU Mali-400MP2
Operating system Android OS, v4.2.2 (Jelly Bean)
Battery Li-Ion 2250 mAh

 

How to Fix or Problem Solving for Recovery LENOVO A850 / A850+ (PLUS) hang or not responding or malfunctions or stuck or freezing or bricked ?

Having big LCD screen Android will make us feel so happy to play games or install other applications from Google Play Store. But we have to know that not all applications will run smooth in LENOVO A850 because some creator does not make their applications in good functions, especially for LENOVO A850. In this case, if we force to install unnecessary applications, sometime it will make our smartphone become hang or stuck or bricks or frozen or blank or LCD touch screen not responding. If we get this problem, we need to try doing soft reset or reboot or restart LENOVO A850 to delete cache and temporary files. If LENOVO A850 still get the same problem, we need to do hard reset or master format.

 

How to force Soft Reset or Reboot or Restart LENOVO A850 / A850+ (PLUS)  ?

When we use LENOVO A850 and get hang or stuck or frozen problem in the middle of using applications, we can try to force reboot or restart LENOVO A850 by pressing POWER BUTTON for several seconds. If the POWER BUTTON can not work, then try to remove the battery of LENOVO A850 by open back case cover and unplug the battery for about 5 seconds. After that we can plug it again in the right positions and turn on LENOVO A850 to finish the restart or soft reset step. In normal situations, doing soft reset or reboot can be done by pressing POWER BUTTON for several seconds until the pop up menu appear, then choose Restart or Reboot to soft reset LENOVO A850. Doing soft reset is safe, because this step will not erase or wipe any important data like contact or photo or files from LENOVO A850.

 

 

How to Hard Reset LENOVO A850 with Hardware Button key:

  1. Confirm and make sure that LENOVO A850 Battery is fully charge or not empty
  2. Turn off LENOVO A850
  3. Press together : POWER + VOLUME UP about several second, that the warning will appear at the LENOVO A850
  4. You can also try to press POWER BUTTON until Lenovo logo appear, then continue press VOLUME UP + VOLUME DOWN together until menu appear
  5. Choose: Reset Device or Wipe data or Clear eMMC
  6. Make sure we already sure than we know that our application and data will be loose or clear while Resetting LENOVO A850

 

How to Restore and Reinstall or Reformat Clean Android Operating system / firmware at LENOVO A850 / A850+ (PLUS) ?

LENOVO A850 using Android as operating system, in the first production when ship to store, LENOVO A850 use Android Jelly Bean version 2.2 which run very smooth in this smartphone. After using several month and install many applications, sometime the operating system could damage or broken. In this case maybe we need to reinstall or restore clean and factory default Android operating system or firmware. The source file of factory default Android operating system already saved inside LENOVO A850 rom. We do not need to copy any data for preparing the reinstall step. Just follow the hard reset step above, then the clean and factory default setting Android operating system will be reinstall by itself. The time to reinstall will take less than 5 minutes. Please make sure all data already backup before doing reinstall or hard reset, because all data will be wipe or removed from internal memory.

 

How to Unlock or Fix or Bypass or Solutions for LENOVO A850 / A850+ (PLUS) forgot password code or security lock screen pattern or pin (lost password)?

The recommended options to give security protections for LENOVO A850 is using screen lock pattern. Some user still also like to use password pin protections. We can easily choose and change how to secure our LENOVO A850 data when the phone away from us, but using screen lock pattern is faster to open then using password in some situations. The problem happen when we forget the answer of that screen lock pattern or password pin protections. We do not need to worry, because Android have option to bypass or unlock forgotten screen lock pattern or password pin protection. Please do several time wrong answer for that security protection continuously until the phone frozen or locked for several seconds. In this time, we will see Forget Password / Pattern button to help us unlock protection using Google account or Gmail account. If we can not use or Google account at this phone, then we need to do hard reset or master format.

 

How to Improve Performance LENOVO A850 / A850+ (PLUS) to make run more faster?

Running LENOVO A850 for Games or doing office activity will be fun if the phone does not have problem. But some user have problem with their LENOVO A850 which run more slowly then before. As far as we know, if the phone run slowly, because there are many applications run in the background and the processor LENOVO A850 performance will be working more hard when that applications doing update or work in progress. That is why we are really recommend for uninstall not use applications, especially which run in the background. If we can not find out which applications that make problem, and need to tweak LENOVO A850 performance run more faster again like beginning, then we may need to perform hard reset or master format to clean anything from our phone and run with factory default applications. After that we can carefully choose and install only specific applications that we use everyday.

 

Is That Any Secret Code for Doing Format LENOVO A850 / A850+ (PLUS)?

There is no secret hidden code for LENOVO A850 to make it back to factory default. Do the options above to hard reset it.

 

How to Upgrade or Update LENOVO A850 / A850+ (PLUS) operating system to Kitkat or Lollipop or Marshmallow or newer Android version?

By default the shipping ROM of LENOVO A850 is Jelly Bean version 4.2.2. Base on the specifications, the LENOVO A850 can be upgrade to Android Kitkat version, but unfortunately until we write this articles, there is no official upgrade for LENOVO A850 to Android Kitkat version. However, there are some other unofficial Kitkat ROM for LENOVO A850 from other community homepage, but if we are not sure how to upgrade it, please do it carefully, because it could make our LENOVO A850 broken or can not use anymore. Using official Jelly Bean at LENOVO A850 is still recommended to use everyday without problems.

This problems also happen at newer version, LENOVO A850 still can not upgrade to official Android Nougat or Android Oreo or Android Pie, because the official development for firmware upgrade at LENOVO A850 has been discontinued.

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View Comments

  • Hi. I have this lenovo a850 for months now and i decided to do some cleaning. So i plugged in my phone to my laptop to save all the files that i need and deleted all the stuff in my sd card. After which i tried resetting to factory settings. When i turned it on, it just stayed on the logo and i never got into the home screen. I tried doing a hard reset as well using the power and volume up button and it says my phone is already in factory mode, which is good. Though i still cant get to my home screen. ;( Have i done something wrong or should i just waste for hours?

    • Hi, usually this problem comes at Rooted Lenovo A850 or some other phone which using Custom ROM. Unfortunately we can not give standard advice for rooted or custom rom problems. However, if you are sure that your phone still at standard operating system, then it might get problems at the file source of operating system / firmware at your phone. You should consult with Lenovo authorize service center for further help.

  • hi sir, i bought a new a850+ from China, my provlem is the phone is SIM LOCK and apps-language is in Chinese. I tried to use Framaroot to roo the phone but failed. any advice pls. thanx

    • Hi, unfortunately we does not have solutions for sim lock because usually it is about GSM protection from bundling provider. Maybe other community member or someone else will help you if they help the same problem with you.

  • Hi. I just bought my lenovo A850 about a month ago but now the screen flickers,jitters and it has an overlay display. I dont know how to fix it. Help me!!!

    • Hi, first you have to make sure the screen flicker come from hardware or software. The easy steps to do is try to do reboot and if you still can see LENOVO logo without problem when your Lenovo A850 restart, then it seems the problems come with applications, and you have to do hard reset to remove all installed applications which can make this problem. You can use setting menu to hard reset if still can go there, or use hardware button key.

    • Hi, Safe Box is an applications to keep secure our data and login account. Usually every internet user have some password for some applications or internet account, some users have problem about forgot password for some account, that is why sometime we need an applications to safe our username and password and SAFE BOX is work for safe many username and password for various account. This SAFE BOX applications have some other functions like to secure our files by encrypt selected data.

    • Hi, unfortunately we can said that it almost imposible to recover or undelete the deleted files from internal memory at your Lenovo A850, because when doing hard reset, the system will reinstall the clean factory default Android operating system, which is also install some factory default applications, that's why your internal memory will replace with new files that make your old deleted files can not recovery anymore.

  • weird animation when off the phone and start charging. It said about "factory mode, please normal boot..."

    • Hi, please remove the battery and wait about 5 seconds, after that plug again the battery at your Lenovo A850. Press power button to turn on your phone again. After run several minutes, try to turn off your phone agian, hopefully that factory mode does not appear anymore.

  • Sir , i have lost all memory during factory reset . so i want to know how to recover lost memory of aneroid LENOVO S 850 mobile.

    • Hi, basically the undelete or recovery data at Internet memory can not be done, maybe some applications at Google Play Store give info that they can recovery it, but as far as we know, the Internal memory will be wipe and reinstall (rewrite) with clean factory default operating system, that is why some data sector in the internal memory will be replace with new one, then we can not recovery it anymore. Unless you mean the data at External memory if by accident also wipe, then you can try to recover using 3th party application or remove the SD card and use memory card reader with your computer. You can try use Recuva or similar applications to recover deleted files at external microSD.

  • I would like to start by saying that your customer service representatives here in the Philippines are good. It's just that I cant stay on the line for so long.
    I have posted this issue last October 4. No, my phone is not rooted or custom rom. I've been having this problem for over a month now. I have problems with my phone that time thus i decided to do a factory reset. The reason perhaps that i wasnt able to go to the homescreen is that all launchers(even the lenovo launcher) is gone. Also the keypad is gone. So all i did was to go to settings/apps/all/chrome then downloaded an android keyboard apk. (I have to use the voice input to type words). Same with a launcher apk. So, yes i finally was able to get my phone working again. BUT, i cant get in to google play store, it says no connection, phone says google stops, hangouts stops, gapps whatever stops..anything related to it..searched online and everything still results to a factory reset which i have done(believe me) more than 30 times now. I even tried downloading apps from aptoide instead just to get all the apps i need to no good..most apps dont work with my data service but only works on wifi. Location services are also not working..lenovo center here is a plane away and it would cost more than what this phone costs..if you could just give me ways on how to fix this, i surely could follow.. thanks a lot!

  • Sir i have lot of space in device memory,but when i want to install some aplication memory full was appear ,why?

    • Hi, please make sure your free internal memory are more then 300 MB, otherwise you phone will said memory full when you want to update or install some applications. All applications will need free internal memory to install the applications, although we still have lot of free external memory or SDCARD external.

  • Hi! I've been having trouble wth my a850. everything just crashes. I get the message: "Unfotunately, **** had just stopped." At first it was just the Lenovo Power that usually stops o Facebook when it crashes but this time all of my apps, as well as my system (settings;device manage,calendar,lenovo launcher,etc stops)

    i did all different steps to reset my phone. (settings and the power volume up button) it says wiping data complete but when i restart it, it's still the same thing. im back to my previous settings on my phone and then all apps just starts crashing. PLEASE HELP.

    • Hi, at some situations, the hard reset or reformat will not solve the problems. There are some possibility, first because your phone has been rooted or use custom ROM or have some not standard tweak. Second possibility because your hardware get some trouble. However, please consult this problems at nearest Lenovo authorize service center.

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