If I'm understanding you correctly, you're basically trying to send a picture from your iPhone to someone on here through a private message? If so, I'm not sure that there's a "mobile friendly" version of the site to where you can just add a picture from your iPhone pictures to the private message directly. It looks as though you need to add it to your picture library on the GG website first and then send it using that route. To be able to do that using a private message, click the very last icon, or furthest to the right that you see just above where you're typing up your message, it's the icon that looks like a camera. If you hover over it with your mouse it should say "Gallery embed" and then when you click on it, it'll give you the option of using your own or someone else's media from on here. You should be able to click on what you want to send from your media and then send it to them that way. An email method might be to ask the person for their email address or phone number and then text or email them a picture or whatever file you're wanting to send.