ensure the child device is powered off prior to adding or removing limits.
From the Smart Family parent app, select the appropriate family member from the top row of contacts (multiple may appear).
From the Manage controls section, tap Limits.
Tap Purchase limit.
Enter the purchase limit in dollars (e.g., 50).
Once the limit is reached, purchases billed to Verizon are restricted until the next billing cycle.
Purchase limits must be less than $100 and apply to Apps, Games, Ringtones, Music, eBooks, Movies and Gifts.
At this time, free text alerts aren't sent for purchase limits.