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
  • 40.7k
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
  • 9,544
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
  • 3,207
11 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
  • 40.7k
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
9 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
  • 20.2k
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
  • 20.2k
7 votes

How to fix "Invalid IMEI " after Factory reset?

Install the Mobile MTK Engineering Mode app. This will only work on devices with a Mediatek chipset. This Application allow you to run Advanced Setup from Engineering Mode Menu of MTK phones, also ...
galacticninja's user avatar
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
Accepted

Is a factory reset from recovery different from one started in the OS?

There is only one difference — on Lollipop and higher, a factory reset from Settings will remove Factory Reset Protection from your device. It will ask you to enter your device and/or Google ...
Matthew Read's user avatar
  • 50.6k
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
  • 19.8k
5 votes

Can preloaded apps be restored when Factory reset-ed

There are two parts to your question Factory Reset. a) Factory reset removes user data including apps installed by the user on phone. Since your device is rooted, you can see that everything in /...
beeshyams's user avatar
  • 40.7k
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

ADB command to wipe data the phone?

You can try this while the phones is on. (You MUST have USB debugging enabled and authorized) adb shell recovery --wipe_data
Amador Mendez'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
  • 40.7k
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
  • 9,544
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
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
  • 201
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
  • 3,207
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
  • 3,979
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
  • 328
3 votes

Android won't factory reset

don't worry. Do just what I say: Turn off you Motorola Moto G 2nd Gen(I mean moto G2). Afterwards press and hold the Volume Up and Volume Down for about 2-3 seconds. While still holding these keys ...
Hariharan Marimuthu'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

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
  • 91.1k

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