Hello, there is a problem in my imessage that sometimes I can't make face time with someone and when it connects, there is no picture and n

Hello ardalanbh,

Thanks for using the Apple Support Communities!

Could you please confirm if this only seems to happen with one specific contact or does it happen with all contacts?

Does it happen on Wi-Fi, cellular data, or both?

If you haven't already, please try the various steps listed in here and see if they help: If you can't make or receive a FaceTime call on your iPhone or iPad - Apple Support

This info can help narrow down what's happening.

Cheers!