My ipad says "This ipad hasn't been backed up for 5 weeks. Backups happen when this i pad is plugged in, locked and connected to Wi-Fi."
I would like to know how to unlock it?
Welcome to the Apple Community.
You might try a forced shutdown to begin with, hold down the top and home buttons together until the device shuts down, then restart it.
where is the home button
The large round indented button of your device.
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