Nephews inheriting in the case where there are no living sons or brothers

Q: My father has passed away few days before and I want to ask you about distribution of inheritance. My father passed away leaving behind:

- One wife

- Three daughters

- Both parents have already passed away

- He had 3 siblings and they all passed away in my father's lifetime

- 1st elder sister who already passed away left behind 1 husband and 2 daughters

- 2nd elder brother who also passed away left behind 1 wife, 1 son and 2 daughters

- 3rd younger brother who left behind 1 wife, 3 daughters and 1 son.

In this case who will inherit and in what ratio? We are confused whether the nephews will also inherit or not. Please clear that. 

Using a smartphone

Q: Is it wrong for a wife to keep a simple smartphone when she doesn't take photos or have any social media accounts such Instagram or Snapchat etc.? Also, just to have the most basic plan on that phone so she can just communicate with her family and female friends?