Installing a dictionary in a mobile will be very useful. I recently Installed the dictonary and found it very useful. HNHSoft Advanced English Dictionary is a comprehensive English dictionary and thesaurus. Powered by Wordnet data, it contains over 150,000+ English head words. If printed, it would be equivalent to an incredibly huge reference book of over 1,800 pages! The dictionary provides a great study tool that allows you to organize your own list of words. You can review the words any time you want, as often as you want, and even test if you have memorized your words. No matter you are a language scholar or an English language student, you will find this dictionary extremely useful