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28 votes
Accepted

Security on a Nexus 6P purchased on Ebay

Theoretically, a factory-reset wipes data only while any deep seated malware that injects itself into the /system partition isn't wiped. To that extent you have a valid concern. Fortunately, you have ...
beeshyams's user avatar
  • 41.1k
16 votes
Accepted

Why does a factory reset keep the operating system updated?

System updates overwrite /system. Factory reset wipes /data and /cache but doesn't touch /system. Simple as that.
Andy Yan's user avatar
  • 9,539
16 votes

Factory reset Android using ADB

You need: Minimal ADB & Fastboot which contains ADB executable then unzip the file ADB drivers and install them A computer Steps: Open the folder where Minimal ADB & Fastboot is, launch it. ...
esQmo_'s user avatar
  • 3,237
12 votes
Accepted

What fastboot erase actually does?

This thread on XDA has a post ....what is the aim of the "fastboot erase modemst" command? Answer modemst1 and modemst2 are storage partitions for Radio Firmware .... - and it's obviously a ...
beeshyams's user avatar
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10 votes
Accepted

How to make a complete factory reset, without anyone being able to retrieve my data?

HOW DELETED DATA IS RECOVERED? Data (un)deletion strongly depends on how a storage media (HDD, SSD, eMMC etc.), filesystem (NTFS, FAT32, ext4 etc.) and OS save and delete files. File carving / ...
Irfan Latif's user avatar
  • 20.7k
9 votes

How to bypass Factory Reset Protection (FRP) or "Verify your account" screen?

Use this code to unlock in an emergency call: *#812#. After calling it, the phone unlocked and I was shown the home screen. After that, I went to the setting and added a new Google account. Since then,...
user2664856's user avatar
8 votes

Will I lose my phone number and phone plan with factory reset?

No. Factory reset erases data stored on /data partition of your phone. It includes your preferences (what you set in Settings app), user apps and their settings/data, system apps' settings/data (...
Irfan Latif's user avatar
  • 20.7k
7 votes

What are the meaning of each category under WIPE menu in TWRP?

I am not sure how much more self explanatory this can be... Dalvik / ART Cache - This is the runtime cache, where executable binaries are stored (after APK files are "optimized"). It is a unique ...
acejavelin's user avatar
  • 6,197
7 votes
Accepted

I factory reset my hudl2, and now it "can't connect to the Internet"

I've managed to work around this for a Hudl 1 by setting the date to before 26 June. I had to escape the set-up wizard and then find a way to get into the settings app. I don't know if a similar set ...
Robert May's user avatar
7 votes

Security on a Nexus 6P purchased on Ebay

In addition to the accepted answer, by flashing the official image and applying bootloader lock you have 100% spyware-free guarantee. This because Android devices with a locker bootloader won't boot ...
usr-local-ΕΨΗΕΛΩΝ's user avatar
6 votes

Would my phone have to be reactivated after factory reset?

In your question, reactive might have two meanings: Reactivation/registration is a process which is one time, at the time you purchased a device inserted your carrier SIM to make handset useable. It ...
user285264's user avatar
6 votes

Does factory reset wear out UFS storage?

A factory reset is nothing you have to worry about in terms of flash wear out. Modern Android devices do encrypt all user data by default, even if you have not set-up a lock screen pattern/PIN/...
Robert's user avatar
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5 votes
Accepted

Is my Android device booting into a "stealth" partition?

Seems I’ve found the answer at https://andi34.github.io/faq.html Quote: I can't change my rom, wipe / format doesn't work. Nothing changed after flashing with Odin. 16 GB Tab 2 have a known ...
e-sushi's user avatar
  • 211
5 votes

Will I lose my phone number and phone plan with factory reset?

The quick answer is "No, it doesn't effect your plan or phone number". Note: Factory reset is just a clean up process which includes permissions to clean and reset everything within device to it's ...
Amber Mishra's user avatar
4 votes

Wipe Android phone before selling

A factory reset is not enough. It just "disables" your data and doesn't really delete it. Some data restore tools can still restore the data after a normal reset. The best way I know of is to encrypt ...
Thomas Vos's user avatar
  • 3,990
4 votes

How to read the data of a SD card configured as "Internal Storage"

You don't... if the SD card was encrypted adopted storage, and you removed it and factory reset the phone then you have lost all possibility of accessing any information on the SD card. You are better ...
acejavelin's user avatar
  • 6,197
4 votes
Accepted

Difference Soft Reset/Hard Reset

Soft Reset is simply powering your phone off and on by using power button - no data is lost Hard Reset is forcibly stopping the power to phone by removing the battery ( if the battery is user ...
beeshyams's user avatar
  • 41.1k
4 votes
Accepted

How can I factory reset a European Huawei phone in China without access to Google?

To reach Google and proceed with the next steps, you need to set up a PC that's capable of penetrating through that wall (e.g. with VPN), and make it a proxy server on the local network for your phone ...
Andy Yan's user avatar
  • 9,539
4 votes

Is there some documentation how exactly does the Factory Reset Protection (FRP) works?

I think much of this is intentionally kept "quiet"... in researching some of this myself a while back, this is the most I could find "in detail". https://github.com/intel/kernelflinger/blob/master/...
acejavelin's user avatar
  • 6,197
4 votes

Should Factory Reset return the phone to the original version Android installed on it?

Factory reset only delete user data (userdata partition) and restore settings to the default values, meaning every settings will be restored to the factory state. This doesn't apply to the system, (...
esQmo_'s user avatar
  • 3,237
4 votes

Unroot hacked Xiaomi Poco C40

If your phone is indeed rooted, it must have its bootloader unlocked. You can restore its factory state from fastboot if bootloader is unlocked. WARNING: you will lose all data write down your MI ...
alecxs's user avatar
  • 4,089
4 votes

Do photos survive a factory reset (Android)?

I sold my old Oreo but I'm paranoid. I had about twenty old photos (nothing special) and I deleted them, even from the trash. Then factory reset. That should be enough. As explained on security.SE: ...
sleske's user avatar
  • 338
3 votes

Is all data lost after factory reset?

You might have a chance via a custom recovery: boot into recovery-mode and see if adb devices shows your device if not, or if you have no custom recovery, you can "temporarily load one" using ...
Izzy's user avatar
  • 91.2k
3 votes

Admin profile locked on Android 4.4 KitKat tablet

I am assuming she either set a new pin/password for you by mistake or you already had a pin/password before she locked it that you cannot remember. Either way you need to reset the pic/password. Here ...
 inteligenta logiko's user avatar
3 votes
Accepted

How to ensure a factory reset wipes /data/media?

/data/media is actually your so-called "internal SD card" space. It's not wiped by default because, as the name implies, it's intended for media storage like photos and music. It usually should not ...
Matthew Read's user avatar
  • 50.6k
3 votes
Accepted

New Note 7 Rebooted and Erased All Data on First Time Insert of SIM card. Why?

This appears to be an undocumented feature of Note 7 as per this XDA thread Samsung factory restore after inserting SIM for the first time on GN7 by ninja0n3 OP here faced the same problem and ...
beeshyams's user avatar
  • 41.1k
3 votes
Accepted

Lost pin, no Google account, can I factory reset?

I think you misunderstand what it is saying here... It is referring to FRP (Factory Reset Protection) which is a method of protecting the phone from unauthorized access by third parties when it is ...
acejavelin's user avatar
  • 6,197
3 votes
Accepted

Can an Android device be remotely factory reset using any email ID on the device?

Yes, with Google's Find My Device, you can locate, lock, and ERASE, the phone. So anyone who has access to the accounts connected to your phone is able to erase all your data. It's made for cases of ...
aBochur's user avatar
  • 2,539
3 votes
Accepted

Factory reset protection (FRP) verification

According to Samsung support, FRP is automatically enabled when you set up at least one Google account. If you still want to check it's status manually, you will need to enter Download mode. To do ...
krzywo97's user avatar
  • 152

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