UITableViewAutomaticDimension not working until scroll

just override estimatedHeightForRowAtIndexPath like this

(CGFloat)tableView:(UITableView *)tableView estimatedHeightForRowAtIndexPath:(NSIndexPath *)indexPath {
return UITableViewAutomaticDimension;
}

and check your autoLayout constraints in CustomTableViewCell view.

Just make sure that your labels don't have an explicit content size set at Interface Builder. They must be Automatic like the screenshot below for the Automatic Row height to work properly without the need to reload any sections up front.


![enter image description here][1]


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