I suspect my cell phone has been hacked, as I did not make the call no. 778.580.4001 on the screen

[Anne_Lee]

I suspect my cell phone has been hacked, as I did not make the call no. 778.580.4001 on the screen show my calling history with unfamiliar call no.

[hTideGnow]

HI @Anne_Lee 

that number is voicemail.  You will see that number when you call voicemail to check message or when people left you a message

in fact, the list is bigger, any number found here are all legit PM voicemail number

https://productioncommunity.publicmobile.ca/t5/Get-Support/Updated-list-of-Voicemail-Access-Numbers/...

[slusagm]

no hack, no worries

the 778-508-4001 is the voicemail number.  the usage will show that number when people called you and got to voicemail or when  you check voicemail yourself.  It is normal, you are safe