I erased my data by mistake

If you have no backup then some data will be lost. If you were using various iCloud services such as iCloud Photos and you were syncing other things such as contacts then signing back in with your Apple ID might cause some of it to reappear.

So when you go to Settings>Apple ID>icloud>manage storage>, do you see the latest backup? That's one thing I know for sure worked for me in the past.

sult16 Said:

"I erased my data by mistake: My wife phone was lost, and while looking for it through find my iPhone, I erased my phone, can you please help restore my data ? My phone was not backed up."

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Recovering the Data:

• Try iCloud.com Directly:

iCloud.com had its own services. So, using a Web browser on your computer or other device, go to https://www.icloud.com for your items. As an example, if you want to recover your Photos, you'd go to https://www.icloud.com/photos, and see it your photos reside in there.

• External Storage:

It might not be officially a backup, but see if you items reside in an external storage device (i.e. USB Flash Drive) Also, look to see if it resides in any other cloud storage, such as they of your ISP (Internet Service Provider).

Recovering the iPhone:

I. Start Here:

• Locate a Lost or Stolen Device - Apple Support

II. Getting this Back:

• Backtrack your Locations: If at a coffee shop, stop in, and ask it if was placed aside.
• Check with Local Authorities: Perhaps it was found and was turned in.
• Ask Others: Check with Other you know (i.e. friends, family members, co-workers, peers, and neighbors)

III. Looking Elsewhere:

Based on Prior Experience: Look under the pillow or on the desk, or under the seat of your car. It might be sitting there. I thought I lost mine, but, low and behold: There it was in the palm of my hand, interestingly enough.