Lost Passcode

Unfortunately, if the passcode has been forgotten, the only way to get the phone going again is erase it and then set it up again. You will lose all of the data on the phone when you do this, it will look just like it did when it was brand new.

IF.....you have a current backup of the phone, you can use that backup to restore the data back to the phone.

The Apple Support document linked below provides the details.

If you forgot your iPhone passcode - Apple Support

There are no "workarounds". If there were, anyone could pick up anyone else's iPhone and get into the personal data on the phone.

Sorry, but it's too late to back up the phone. You have to back up before disasters occur.

Please visit an Apple Store or Apple Servicer if you need to verify the information that I have provided.

When you get the phone up and running again, please consider regular backups.

How to back up your iPhone, iPad, and iPod touch - Apple Support