We have been warned that malicious apps can push fake login pop-ups on our phones that look just like Apple's!
If you enter your password you are at risk for having your credit card information stolen.
These pop-ups usually appear when trying to install an app or update the software.
To easily avoid this scam, go to the iPhone's settings menu and enter your password through there. You can also simply click the home button whenever a pop-up is shown. If it is a scam, it will disappear, but if it is legitimate from Apple, it will remain on the screen.
Be very careful for scams out there is's so much easier to get a hold of your personal information!