Strange unknown programs with white icons have appeared

out of nowhere, strange programs called:
adsheet
fieldtest
ios diagnostics
setup

have appeared on springboard. icons totally white. have idea these , if ok delete them? or, there benefit keeping them?

 

next time search , you'll find answer

 

Forums iPhone, iPad, and iPod Touch Jailbreaks and iOS Hacks

• iPhone
• Mac OS & System Software
• iPad
• Apple Watch
• Notebooks
• iTunes
• Apple ID
• iCloud
• Desktop Computers
• Apple Music
• Professional Applications
• iPod
• iWork
• Apple TV
• iLife
• Wireless