Why be Simon commission appointed ? What be its recommendation?

In the government of India Act,1919 there be a provision for the review of the working of the act after the lapse of 10 years.The government,however,appointed simon commission two years previously than due time.All the members of the commission were britishers.The commission be asked to inquire into the working of the government of India Act,1919 to find out how thw dyarchy was working surrounded by the provinces.

Major Recommendations :
-Abolition of dyarchy and introduction of provincial autonomy.
-The governor and governor general should be given special powers.
-The franchise should be extended to the extent that atleast 10-15 percent of relations should be able to get right to vote.
-Retention of communal supporters.
-Introduction of dyarchy at the centre.