I got unruly a phone. Didn't discuss it with Dad. Didn't feel the need to.
She's had FOUR phones 'disappear' at his house. FOUR. She's NEVER lost a phone when with me - and she's had a phone since she was 10. Am I more than a little suspicious that if they did a study of his farm pond, it would come back seriously contaminated w/whatever leaches out of NICAD batteries? Yup. Do I DO anything but get another phone since I WON'T have Unruly being w/out one when she's left home alone, etc? Nope.
I GET what you're saying about YOUR rules in YOUR house. And I'm with you. Believe me, I'm 100% with you. But take a deep breath. Your reaction is giving Mom the win. You're all pissed off, ranting, posturing, saying "NOT IN MY HOUSE!!!!" and "WHO THE HELL DOES SHE THINK SHE IS!!!!" and getting your ... whiskers ...
all in a knot about it. She's just sitting there saying "Yup. Still got it. Look at him twist."
OR you let her have the phone in the manner that Rushia suggested. She doesn't REALLY have access to the phone. Doesn't really HAVE a phone in the sense that big sis does. Sure, mom still wins a little bit in that daughter keeps the phone. But it's relatively painless for you and Mom is left thinking she can't get your goat anymore. Which is a small win for YOU.
Which is less painful? And at the end of the day, there's a lesson in there for Princess - she wished for a phone - and she got one. But it's under YOUR control as long as it's in YOUR house. So she didn't really get her wish after all and she learns that just because Mommy does something doesn't mean Daddy is gonna let it slide through unnoticed.
Unruly doesn't use her phone at Dad's house. I've NEVER been able to call her on it when she's with him. Ever. No big.