Maybe .. and I know it's not easy. Don't renew her contract. At 14, does she have money of her own, like pocket money, money from birthday gifts etc?
If so, she can pay for her next contract herself, or not.
If she's in your company, and actually just glued phone, that's disrespectful, terrible manners and such .. and your opportunity. You can ask for her phone at anytime she is on it, and in your company and she has to give it to you - unlocked so you can look through - you must be sure she is safe, probably just messaging too much with her friends.
We, the adults, enabled and continue to allow it. We also model similar behaviour, we show them that work, drinking or our favourite tv show is more important than tending to our family. Maybe it's bike rides, webinars or even, cooking - we show them that certain things are too important to be interrupted.
One of those things, let's face it, is our phone use. We set terrible examples.
@takingmytimeonmyride does this affect everyone in the household? Because if you have an unlimited data plan, then your children must know that your on your phones after 1130.
@PandaOrLion @YouCahnts @Tothepoint99 @JustTheOneSwan @Hbh17 Am in total agreement, just be ready for the ride.