Can any of the wireless providers let the primary account holders see sent text messages from other lines on the account?

Most major wireless providers do not allow primary account holders to access sent text messages from other lines on the account due to privacy regulations and policies. While account holders typically have visibility into billing and usage details, access to the content of messages is generally restricted. However, some providers may offer shared family plans with specific parental controls or monitoring features, but these usually require consent from the users involved. Always check with the specific provider for their policies and available features.