Aye Eric,
Size matters!

However, as I do not own an iPhone I cannot help with the specifics. But does my attached screen dump image help?

Others with more nouse than I are able to copy/paste directly into the body of the message, rather than attaching the image, but I am not sure if this affects the space used by the site on the servers!

SteveH, he who provides the technical servicing of the website, would be best placed to provide this knowledge as it is he who has to 'clean out' attachments at a later date, when necessary. Thank you SteveH.
So, having made a complete buttock of an explanation, I at least hope that it helps in some small way.
Good health, Bill
My regards, Bill