It comes WITHOUT an alignment aid, so one must be VERY careful when lining it up. My first try had to be removed because when I put on my Caseology case, it caught the edges of the shield and 'picked it up' off the iPhone screen, That required removing the shield—more than once—and re-trying for a more accurate placement ... but that led to the shield losing its 'sticking' at places on the iPhone screen. So, I had to DISCARD my 1st shield altogether and use the 2nd shield (I purchased a pair.) Taking EXTREME caution with the 2nd shield, perfectly aligning it to the iPhone screen, met with success! My Caseology case now fits WITHOUT interfering with the shield.