If you would like to access your Microsoft Dynamics CRM 2011 tenant on a mobile phone like an iPhone or Android devices then you can access it by either of the following ways.

a.   To access if from the browser on your phone, please enter your tenant URL (Dynamic CRM URL) and hit enter.  Once you have opened the page; replace the last part of the URL “/m/default.aspx” with “/default.aspx”

b.   Download a you third party app from your Apple store of Google App Store.  You can try some of those and choose the one you like the most.  As a reference; Microsoft PinPoint has an app listed.