The filter PIN is a code set by whoever registered the phone. It’s the lock on the phone’s filter. Without it, nobody can request apps or loosen the filter, including the phone’s user.
What it protects
App requests (the request form asks for it, if one is set)
Filter changes, like turning on hotspot or texting
Parental Controls on the phone
Re-registering the phone
What it isn’t
It’s not your screen-lock code.
It’s not your serial number.
Who should set it?
We recommend that the PIN is set by a parent, spouse or rebbi, not by the person who uses the phone. That way the user can’t change the phone alone.
If the phone has no PIN and someone else could request apps, we recommend setting one.
Keep it private
We will never tell anyone your PIN or give hints. If you type your PIN in a support chat, we won’t repeat it back.
Related
“How do I set or change my filter PIN?”
“I forgot my filter PIN”
“How do I use Parental Controls?”