If it failed to recover any data with Recover from iOS device, there may be the following reasons:

1. Data has been over-written by other data for a long time.
2. After the data was deleted, any new operation in the device or new data written may cause the date has been overwritten.

If you synced iOS device with iTunes before, you can choose Recover from iTunes Backup feature to recover the deleted data.

Related FAQs

Why no data is found via Recover from iOS Device?

What are the limitations of the trial version?

Why there is no deleted message attachment in the recovered files?

Can the data be recovered when the iOS device failed to get started?

Can the data be recovered from jailbroken device?

Why is my device read as Unknown?

Can the data be recovered when forgetting locking screen passcode for iOS device?

Can the recovered files be imported to iOS device?

Why iTunes needs to be installed when using the program?

Why no data is found via Recover from iTunes Backup?

Why cannot I connect and sync device with iTunes after losing the data?

What situations are supported to recover the data?

How to exit Device Scanning Mode (Restart device to normal)?

Why do I always get "Analyze failed" error?

Why these recovered emoticons cannot be previewed with other browser?

How to enter Device Scanning Mode with the application?