Limit messages in conversation
To set the number of text messages to save per conversation:
- Touch
> 
Messaging. - Touch
> Settings. Touch Text-message limit and select a number.
When the limit is reached, older messages are deleted. To retrieve a deleted message, ask the sender to resend it.
TipTo prevent a message from being deleted when you reach your limit, open the conversation, then touch & hold the message and touch Lock.