I thought they may have announced it when we were sent the email with link to choose our option. I’m all for giving to charity and I’m sure the amount we get as a goodwill gesture is a minimum amount per person, but I’d have liked to have known in advance what charity I was choosing to donate to.
Also a satnav has other benefits. With the new 6 point penalty for use of a mobile while driving I would not want to risk using a mobile satnav, as you never know if you might find yourself being issued with a ticket, whether justified or not. You wouldn't be able to prove that you weren't touching the device if it came to it.
I'm sure some of the cost can also be recouped via needing to pay giffgaff for a reduced amount of data in the future, as you can now use the dedicated satnav.