@billymac: Do you have the original charging cables and plug adapters that came packaged with the devices? If you do, and if you connect the phones to their respective chargers, does a charging indicator appear on screen? If not, try connecting them to a home computer using the relevant USB cable to see if you're able to establish a charge, then press and hold the Power button to see if they boot up as expected.
If the phones remain unresponsive then please reach out to our Help Desk via the link below, and an advisor will be on hand to assist you further, and arrange any necessary repairs.
