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Fortunately or unfortunately, Factory Reset doesn’t always wipe everything — and people who are determined enough can recover some of their personal data afterwards with some efforts.
When you delete files from your device using factory reset option they aren’t actually wiped, instead marked as deleted or hidden. If you accidentally have done that and want your deleted files back, then the first thing you should do is stop using your smartphone. Using or adding any new file further, will fill the space left due to your per-existing files deleted and will work as overwriting over those deleted files. This will make recovering those deleted files further impossible.
There are many data recovery tool for factory resets of android devices available in market. But for amateur users, it is not easy to use them on their own and take risk of important files being lost permanently.
In this case, using android data backup services provided by some recognized professional experts would be a wise decision. They help to recover these lost files without leaving things – or rather data – to chance. This way you can reduce the risk factor for the recovery of lost data files.
To avoid such situations, regularly backup your important personal data on Android device to dodge sudden loss of data files. Also, in case of accidentally deleted files, usage of device should be immediately stopped. It will help to prevent further damage.
You can also get help from this video
How to Recover Lost Data from Android
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