the police would certainly frown upon indecent photos being sent.
And your provider may cancel your phone contract too
Vodafone T and C state "We reserve the right to suspend or terminate any message account that you have registered for or other storage facility for pictures or video clips where ............ your message account or storage facility is being used to send.............. messages which are obscene, threatening, menacing, racist, offensive, derogatory, defamatory or in violation of any intellectual property or proprietary rights or otherwise in breach any part of these Terms."