... How much money is left on the voucher?Text Off-peak 10p per minute Peak 30p per minute Talk Phones, Talk Maths Who will pay for the phone when you leave school? Will this affect the ... Does your phone give good value for money? Are all the calls/texts you make necessary? Talk Phones, Talk Maths Issues to consider Are they safe to use? Are there health issues surrounding ... surrounding mobile phone masts? How can security be improved? Are the school rules about mobile phones fair? Vocabulary Corner Off-peak/peak time Voucher Text message Pin code...