android calendar comes with very few people seem to use it? Do not set the account can not use?

Email account set up with the machine version 2.1 does not require testing, but in the simulator version 4.2 add calendar, tips must enter the account Shetenglebantian not get. Add this account on the computer is not operating personnel issues, but not in contact for many computer users still somewhat difficult, is it some people can not use the calendar?

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Reply:
4.2 with multi-user functionality may have relationships, it may be business strategy, Google has put more and more of their own product placement Android.
Reply:
The calendar can be replaced by other applications ...