Make table separator without any indent

withoutIndent.m

// iOS 7+


// on custom cell
- (void)awakeFromNib // or layoutSubviews
{
 // make table separator without any indent
    if ([self respondsToSelector:@selector(setLayoutMargins:)]) {
        self.layoutMargins = UIEdgeInsetsZero;
    }
    
    if ([self respondsToSelector:@selector(setPreservesSuperviewLayoutMargins:)]) {
        self.preservesSuperviewLayoutMargins = NO;
    }
}

// on ViewController
- (void)viewDidLoad
{
   [super viewDidLoad];
   
    if ([self.tableView respondsToSelector:@selector(setSeparatorInset:)]) {
        [self.tableView setSeparatorInset:UIEdgeInsetsMake(0, 0, 0, 0)];
    }
    
    if ([self.tableView respondsToSelector:@selector(setLayoutMargins:)]) {
        [self.tableView setLayoutMargins:UIEdgeInsetsZero];
    }
}