Every time you receive an update, your Android shows a prompt to save your data. But does the software update delete any of your data?
When Android gets an update, no user data is lost or deleted. Updates bring new features and bug fixes to the OS software, but strive to leave the user’s data and settings as untouched as possible.
But what if there is an error or power outage during a software update? Existing data might be lost in this case. What else might cause a loss?
- When you update a mobile, is all your data deleted?
- When we update an app or system, what happens to the data from the previous update?
- Will a software update delete my apps?
- Will a software update delete my photos?
- Will my phone be reset if I do system updates?
- What are the things I have to do before updating my phone?
- Does updating to the latest MiUi version cause loss of root access?
- What happens if the data connection is lost in an Android system update?
- Is it possible to undo the Samsung Android system updates?
- If I do a factory reset on an Android phone, will the software update also be deleted?
- Is it safe to update Android phones whenever asked?
See also: Does Updating Your Phone Make It Faster?
When you update a mobile, is all your data deleted?
In the case of official software updates from the device manufacturer, you will not lose any data as these updates are designed to keep changes to the system database schema to the minimum.
In case of a software update you choose to install by yourself, however, it’s a good idea to backup important data files. You can do this using an application that allows you to connect your smartphone to your PC and sync the files you want to your PC (e.g. Samsung Kies).
When we update an app or system, what happens to the data from the previous update?
When an app or the system is updated through OTA, the previous update is removed from the device as the newer version replaces the older one.
User data, on the other hand, is generally not affected by the update, as Android and app developers seek to maintain backward compatibility across updates. This means your old files and data need to continue to work with the new version of the systems or app.
In some recent Android versions, apps are updated by background downloading a differential patch update containing only the differences with the old version, as opposed to the whole app. The patch is then applied to the existing version of the app to update it.
In contrast, if you downloaded an apk package yourself and installed it manually, that file remains in your phone even after an update until you delete it yourself.
Will a software update delete my apps?
A software update does not delete your apps. Every update has the apps and data protected during the process.
However, there are a few scenarios where this might not always be true:
- After a system update, an app (e.g. gaming apps) may no longer be compatible with the latest version of the OS and stop working. In most cases, though, you can install the updated versions the app from the Google Play Store.
- If there any interruption while your device system is being updated, such as a power failure or some error, the software update may fail, and existing apps may no longer work properly. In this case, you may need to factory reset your phone, reinstall the system update, and reinstall your apps.
Will a software update delete my photos?
A system update itself won’t delete your photos on your phone. User photos and videos are stored in a protected location in your device’s internal or external memory (depending on your device settings) such as a DCIM folder. OS and app updates normally do not touch these user folders.
That said, errors and failures are always possible during an update, rendering your device unusable. In this case, a factory reset may be necessary, and that would wipe out your internal storage and everything in it including your photos.
Thus, it’s always a good idea to backup your images and data by uploading them to the cloud, e.g. through Google Drive or Photos, before Android has a software update.
If your photos are all stored on your SD card, the risk of deletion is much lower. In case of update failure, you can pull out your SD card and easily access your photos on another device.
Will my phone be reset if I do system updates?
A device won’t reset itself during a system update, whether it’s an OTA (over-the-air) update or a manual one.
In the case of a manual update, however, e.g. for installing custom ROM from the manufacturer’s website, manually resetting and formatting the device after the update is advised to avoid usability issues such as lags due to cache or file errors.
Resetting the phone beforehand will prevent errors in OS installation and clear out the cache.
What are the things I have to do before updating my phone?
Whenever you plan to update your phone, always backup your data and apps first. Additional things you should do include:
- Create more than one backup. Getting a cloud backup or using a free app like Helium can help you backup your important data by copying files via USB.
- Make sure your phone battery is charged at around 70 to 80% so the phone won’t power off while the update is in progress.
Does updating to the latest MiUi version cause loss of root access?
Updating MiUi (Mobile Internet User Interface) will not cause loss of root access (privileged user access to Android subsystems). No loss of data occurs if you go from a developer to a stable ROM version or vice versa
In case of changing the version of full ROM, you should:
- Store the downloaded ROM in a folder of the SD card.
- Choose the package from the update app.
- Instead of using the “Update app” option, use the “Downloaded rom” folder on your SD card to store the previous ROM and then install the new one.
Otherwise, there is a possibility that your phone may behave strangely. Even so, though, you’ll still have root access.
There is an automatic backup to the MiUi cloud of all your files. If you don’t have a WiFi connexion, however, the backup will not take place.
What happens if the data connection is lost in an Android system update?
The loss of internet connection will not prevent an update if the update package has already been downloaded. All OS upgrades and installations will take place once the entire functioning copy of the OS has been downloaded and inspected for data loss (MD5 or SHA hash Check).
If the internet connection is interrupted while downloading the update package, the download will be paused and resumed once the connection is restored.
Once the actual update starts, however, a data connection is no longer required as everything takes place locally on the device once all required files have been downloaded.
After download, installation begins. The package is stored in the phone’s storage and is used to set up the system. Turning off the internet has no effect. However, a minimum of 50% battery life is required.
Is it possible to undo the Samsung Android system updates?
The only way to undo the latest Android system update is to flash a previous version of Samsung’s firmware.
This is a delicate and error-prone process as it involves replacing the previous partition (ROM) on your system with a new one while overwriting all original OS files in the process. If something goes wrong, your phone might become bricked.
You should back up your vital data before you attempt to delete the Android upgrade on your smartphone.
Before doing this, check if other users of the same device model have successfully rolled back OS updates. A quick search on Google for “Odin Flash” and your phone model should bring up helpful information.
When flashing your model or firmware, pay attention to any unique instructions. You’ll need the following items:
- A computer
- A USB cable
- Odin, a flashing program
- Device USB drivers downloaded from the manufacturer’s website
- The previous version of the firmware you wish to downgrade to.
To begin flashing, follow these steps:
- Connect your device to your computer using the included USB drivers.
- Hold down the power and volume up keys at the same time when your device is off. The device will now enter ‘download mode,’ and you can begin downloading immediately.
- Start Odin by pressing the ‘Run’ button.
- Connect your smartphone to the USB port on your laptop or desktop PC.
- Odin should be able to recognize the device. It means you’re on the correct path.
- Click “Auto Reboot” and “F.Reset Time” in the options menu.
- Navigate to the location where you saved the firmware by clicking on the “PDA” or “AP” button, according to the Odin version.
- Choose the file that has the extension “.tar.md5”.
- Odin will check the file to see if it’s valid before proceeding. You can press “Start” once it’s done initializing.
- Odin will flash the updated firmware in less than five minutes. That’s how updates are uninstalled on Windows
If I do a factory reset on an Android phone, will the software update also be deleted?
If a factory reset is done on an Android phone, the software update will not be deleted. When a factory reset is done, only the user data is removed, mostly the passwords, accounts, languages, and other user settings.
Thus, after a factory reset, your device will still have the the same system version it had before the reset.
Be aware, however, that all the data stored in the device’s internal storage will be deleted. So after a factory reset, all your user data and settings will need to be entered again, or restored if you made a backup before the reset.
Is it safe to update Android phones whenever asked?
It is recommended to upgrade your device whenever your smartphone asks you to. Your smartphone or tablet has a risk of getting compromised if you keep using an out-of-date operating system.
- Updates correct bugs and security issues while also removing sluggish software. To secure your digital assets, keep your system, smartphone, or tablet updated. For example, Google, Yahoo, and many others stole OpenSSL and modified it.
- Glitches such as unwanted characters on the screen can be fixed with an update patch. Updates often bring new functionality. A big upgrade can improve your device’s compatibility with new hardware and applications.
- Secure your smartphone with regular manufacturer updates.
- Built-in utilities of update ensure bugs free update. Since stock versions of the respective androids are verified they should be used.
That said, it’s always a good idea to check user reviews of important update your android device is receiving before putting in it.