ContribucionesMost RecentMost LikesSolutionsRe: T-Mobile® SyncUP KIDS™ Watch (Sprint) I confirm, the "Kids Sync Up Plan" is what you need on Sprint (No other plan will work). Everything worked perfectly fine after that. Just do the online chat and tell them that's what you need and life will be good! Re: T-Mobile® SyncUP KIDS™ Watch (Sprint) Perfect! I just chatted with Sprint online and they changed the watch to this plan. I'm at work right now but I'll give it a try tonight at home. Hopefully that's the fix! Re: T-Mobile® SyncUP KIDS™ Watch (Sprint) I'm currently on with T-Mobile tech support. Not looking good. She mentioned at lot of others also have this issue. Not sure what they are going to do for me but I'm guessing this watch will be getting returned!