Hi,
page 91 of this level 3 EYE handbook will help (search inside for the word 'mobile' and click to page 91, then scroll down to page 92 for some information on safeguarding)
Do you have a copy of your setting's Safeguarding policy and your job contract or a list of your duties and responsibilities (which will outline your role in the setting)?
What is said about each of those areas? eg. are you expected to know about the importance of safeguarding and the procedures involved? Has anyone in the setting talked to you about safeguarding and how they want you to be able to recognise concerns and report them to someone?
What are you required to do with your personal mobile phone at work? What devices are you allowed to take photos on when in the setting and what happens to those devices once pictures have been taken?
For the last three you'll need to check the Safeguarding policy and/or ask your setting about them. They'll be able to explain how TAC and assessments work within your setting and what your responsibilities are eg. undertaking observations of children to track their development, work in partnership with the children's parents and carers, and share information with specific members of staff.
Hope this helps xx