For any recovery methods to work,
your phone needs to have been backed up
on iCloud or your desktop.
We'll be taking you through the simplest
recovery method, through iCloud.
Open settings on your phone.
Tap your name at the top.
Select "iCloud."
Scroll down and select "iCloud Backup."
There, you'll see when your last backup was.
Next, go back to the main settings menu.
Select "General."
Scroll down and select "Reset."
Choose "Erase All Content and Settings."
From the screen that pops up,
choose "Erase Now."
You may lose some newer data on your phone,
depending on how recent your backup was.
Your iPhone will now reset to factory conditions.
After, you'll see the iPhone's initial welcome screen.
Follow the prompts until you get
to the Apps & Data screen.
Choose "Restore from iCloud Backup."
Choose which backup you want to restore from the list.
Pick the version that had the text you want to restore.
Your phone will now repopulate all backed-up data.
You should now be able to find your deleted text.