The News International-owned title has boosted the number of editorial sections from seven to 44, including specialised content such as Scottish content, Music Biz, Rugby League and Sun City.
The site, developed by mobile media agency Bluestar Mobile, also features a dynamic homepage which allows visitors to navigate via a series of large animated graphics.
Ad sales, previously handled by Nokia, are now being managed by mobile agency YOC with Autotrader among the current advertisers.
A News International spokeswoman said, “The Sun has relaunched its mobile site with an improved look and feel and a greater depth of content, which aligns mobile closer to the website.”
The Sun attracts around 400,000 unique users, generating over 2m impressions.
This story first appeared on newmediaage.co.uk