I received the following inquiry from a Sprint SE:
We are trying to penetrate ES400 into a particular customer. Can you find out if the version of mobile IE on the device can support HTML5?  It’s a requirement. 

Per the customer: I have soft dependencies some HTML5 features (Web Storage, CORS). I am not well versed in different versions of windows, but none of versions of mobile IE have the feature set I need. Please advise if the ES400 will support HTML5. Thanks.