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As long as the title is relevant to the image, iPhone 4S would be fine.. Try and keep your titles below 70 characters... If you have a URL that have multiple pages then you should have a look at this.. http://googlewebmastercentral.blogspot.co.uk/2012/03/video-about-pagination-with-relnext-and.html

It's important that you don't have a noindex or nofollow in your homepage. That's like blocking your site. Be default, it's allowed / open. No need to allow it...you can do it, but it's not required in any way. However, as I said first, make sure you are not blocking the bots from indexing you. As soon as the block goes away, you are automatically allowing the bots to crawl and index you.