It can mean just opening an unsolicited email. From the BBC:
"According to the CPS website, "making indecent images can have a wide definition in the law and can include opening an email attachment containing such an image, downloading one from a website, or receiving one via social media, even if unsolicited and even if part of a group.”
But in this case it seems to be a bit more than that:
"Mr Edwards is accused of having six category A images, the most serious classification of indecent images, on a phone. He is also accused of having 12 category B pictures and 19 category C photographs."
It can mean just opening an unsolicited email. From the BBC:
"According to the CPS website, "making indecent images can have a wide definition in the law and can include opening an email attachment containing such an image, downloading one from a website, or receiving one via social media, even if unsolicited and even if part of a group.”
But in this case it seems to be a bit more than that:
"Mr Edwards is accused of having six category A images, the most serious classification of indecent images, on a phone. He is also accused of having 12 category B pictures and 19 category C photographs."
https://www.bbc.co.uk/news/articles/crgr49q591go