hmmm again wrote:
I have two daughters. They have unlimited texting, but likely only average 20 messages a month. Their use is an appropriate and likely productive use of the technology.
No matter how measured, 4 000 text messages are too many.
And even though she will roll her eyes, she does need a discussion on the dangers of all forms of electronic communication today (including the Internet). Some friends' daughters have been targeted by adult stalkers or pedophiles, and they are by no means naive or non-sensible young women. In one case, law enforcement had to get involved. It just makes sense to give good cyber-technology instructions - even if seen as lecturing.
You have no clue.
Its not normal to send 4000 texts a month, because most use whatsapp or messenger. Meaning, apps that send messages trough the web.
Your daughters are probably sending messages on one of those apps (or someone similar) racking up what would be in text message more than 10 000 a month.