IIRC (not a MMS user, it never took off in Germany) MMS requires provider/carrier specific settings (e.g. a special MMS APN) to be set, meaning that it may not

IIRC (not a MMS user, it never took off in Germany) MMS requires provider/carrier specific settings (e.g. a special MMS APN) to be set, meaning that it may not work for you even though it’s properly implemented.