How can I unban Snapchat on iPhone?

You cannot remove the ban. Apple cannot remove the ban. We cannot remove the ban, either.

Only Shapchat can remove the ban, but if it is a device ban, there's a pretty good chance they will refuse to lift it.

Snapchat Support – I get an error message logging in to Snapchat

Under "Device banned: SS18, SS06, SS07 errors":

"If your device has been banned, Snapchat Support cannot unban it for you."

That's a shame, but why do you think we or Apple can do anything about it? This is a user to user only forum, not Snapchat Support. And Apple has nothing to do with Snapchat. If you violated their terms of use, they ban you. And often that ban is permanent, but you'll have to contact them and ask for help.

This has nothing to do with Apple.

SnapChat banned your device

Only SnapChat can remove the ban

Contact SnapChat Support......https://help.snapchat.com/hc/en-us

Bummer.

Nothing anyone here or at apple can do about that. Only snapchat can lift the ban.