Why can't I open my Facebook Messenger on my iPhone?

[iMore Question]

i dont know what to do?!!anyone can help me?

 

[Just_Me_D]

I don't know. Did you download and install the actual Facebook Messenger app? Is your iPhone running iOS 7 or later?

 

[Ledsteplin]

Did you log in?


Sent from my ancient but trustworthy iPhone 5