AT&T iPad Sim card in iPhone

hi guys,
i'll in , wondering can activate at&t ipad sim card in ipad data , use in iphone? (my phone unlocked)

 

anyone???

 

Forums iPhone, iPad, and iPod Touch iPhone iPhone

• 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