I've at least questions concerning united mobile:
I can see that it is a callback fonction even if you call someone.
But if my husband call me and wait the call back, am i able to see that he is trying to call me ? (i mean may he know that my phone is ringing and he hangs off his phone to wait me to call him?)
OR will he be charged just when he hang up the phone when the call back calls him?
Is there any tip that allow me to know that he is avalaible for me to call him with no cost for him? (i mean that his credit of 10 euros will be not charge)
Thank you for helping me
