Before the addition of the below code   

![The list shows name and number](https://i.stack.imgur.com/0cxwx.png)

After addition of the following lines of code 

```
self.tableView.register(ContactListTableViewCell.self, forCellReuseIdentifier: "ContactCell")  
self.tableView.rowHeight = UITableViewAutomaticDimension

```

number disappears. 

![After the addition of code](https://i.stack.imgur.com/wNGr9.png)