Answer: Reminder
Explanation:
Reminder advertising is the advertising process which is used for reminding the customers about the upcoming new product in the existing product range of new launch of any product or service. It is the type of marketing strategy that is used by displaying ads for cuing the consumers about the upcoming product or service.
According to the question's situation, "LiveTone" cell phones launching in marketing field is using reminder advertising concept. Advertiser are presenting the ad for the cell phone with the demand of the consumers to be present in market.