title: Tile shown with line on a device
body: <p>I use a tile for view background:</p>
  
  <pre><code>self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"background.png"]];
  </code></pre>
  
  <p>In simulator everything is fine, but on real device there is something like line which I want to avoid.<img src="https://i.stack.imgur.com/hBPw0.jpg" alt="enter image description here"></p>