Welcome to the board ...

For starters, there's no such thing as free content that you can legally use on a website. You need to have a license to use them. What exactly do you intend to do with the images? That will help me, and others, know what to recommend.

There are a LOT of content providers that have sets available for not a whole lot of cash ... check out some of these places:

www.ounique.com
www.cheapcontent.com
www.twinkcontent.com
www.skanmedia.com
www.www.con-trend.uk
www.adultcontent.ca
www.cool-content.com

Ounique has a very nice search feature, you can type in "phone" in the search box and find sets that have a phone as one of the props.