App icons opening other apps

Weird issue here that I'm hoping someone has experiences/resolved on their own. I did a search, but didn't come up with anything (it's possible I'm using the wrong search terms, but I'm coming up blank)

Recently my wife's iPhone has started to open other apps when she hits on the mail or safari icons. We've tried restarting, etc, but nothing seems to help. It's only the mail & safari icons that do this (they are both in the bottom layer of icons-the one that doesn't change when you change screens), and not any other icons. They always open the same apps every time as well, which is weird to me. The mail icon opens the IHG app & the safari app opens Pinterest.

Any ideas on what might be going on would be appreciated. Thanks in advance,

 

Thanks for the quick replies, no no screen protector but she does have an otter box case. I don't think that would be impacting it, but I'll double check now that you've mentioned it. I'll also do a search for ghosting to see what hat turns up.

No it's not jail broken either.

 

Good point! I'll move the apps around to see if it's that part of the screen or if it's the apps themselves.

As far as the phone, it's an iPhone 6 with the most recent version of iOS (I forget the version number but we always upgrade as soon the updates come out)

 

Awesome, thanks for the tip. I'll change the settings & see if that helps