According to the professional explanation of Factory Reset from Wikipedia, a factory reset, also called master reset, is a software restore of an electronic device. It can erase all information stored on the device to restore the device’s software to its original manufacturer settings. This is often used to fix the chronic performance issues such as freezing and will not remove the device's operating system. Data on the SIM card and the Micro SD card are not erased.
There will be the possibility to lose data when you perform factory reset on your Android. If you have already backed up your phone data before factory reset, you are relieved to not lose your Android data. Unfortunately, if you do not have the backup, you might be nervous about data loss. Do not worry about it anymore.
Android Data Recovery
Android Data Recovery is a specialized software for recovering almost all Android data like contacts, photos, videos, text messages, call logs, music, WhatsApp chat history, Viber messages due to accidental deletion, factory reset, ROM flashing, software update, virus attack, etc.
- Support Wide Variety of Android Device Models & Android OS
This program can recover deleted files for most popular Android brands including Samsung, HTC, LG, Sony, Motorola, ZTE, Huawei, LG, etc. Also, it is compatible with all versions of Android OS, including the latest Android 7.0 Nougat. Hot devices like Samsung Galaxy S7, S7 edge, S6, S6 edge, S5, S4, Note7, Note5, Note4, Note3, HTC One M9, M8, LG G5, G4, G3, Sony Xperia Z5, Z4, Motorola Droid RAZR, etc are all well supported.
- Preview All Recoverable Files as Needed before Recovery
This data recovery program displays all scanned files in categories and allows you to preview all the recoverable files in details before recovery. You can easily find and view contact details, read text messages, preview photos and videos, view documents, etc. All the contents you can preview normally in the scanning result can be retrieved.
- Selectively Recover Deleted or Lost Data from Android Devices
It enables you to recover what you want by selecting them from the scanning result. You can recover a certain type of data or just mark the items you want. What’s more, it supports exporting recovered files in multiple formats to computer for easy reading or printing, for example, export contacts or messages as CSV/HTML formats.
Easy steps to restore Android data after factory reset
1. Download and run it on your Android phone or tablet.
2. Select the file types.
3. Identify your Android by connecting it to PC and enable the USB debugging.
4. Start to scan, preview the scanning result and selectively recover what you need.
Fixed problem: Android’s factory reset has a security problem
How do you sell a phone without giving away the data on it? If you've used a phone even briefly, it's filled with all kinds of sensitive data, including passwords and login tokens alongside personal texts and photos, all of which need to be removed before sale.
Normally the standard answer is factory reset, which wipes the memory and restores the phone’s setting, but there’s a growing body of evidence that, for Android phones at least, the factory reset isn’t enough. The core of the problem is flash memory, which limits how often a given block of memory can be overwritten.
The quick fix for this is simple: encrypt the data on your phone before you get rid of it. (Settings > Security > Encrypt Phone, for any Android version since 3.0.). If you need it more safe, you can make factory reset after encrypting the phone.