iPhone devices All iPhones require iOS 13.0 or later. Compatible with iPhone 7 and up. iPhone NFC readers are found on the front of the devices. Place the device close tot the booomtag with the top of the screen. Samsung devices Samsung have some great supporting information about the location of the various NFC detection areas which can be found here: https://www.samsung.com/hk_en/nfc-support/#devicelist Sony Xperia devices Sony Xperia devices have a wireless technology range of one centimetre, so your TravelMaster smartcard must be held close to your smart device. The NFC detection area is located on the front of the device. Hold your device close to another device or an NFC reader so that the NFC detection areas touch. NFC readers contain an N-Mark on the back the official symbol indicating that the device is NFC-enabled. More info can be found here: https://support.sonymobile.com/global-en/xperiaz/userguide/nfc/#gref Huawei devices Vodafone has a support article on the Huawei P8 Lite and how to enable NFC: https://deviceguides.vodafone.co.uk/huawei/p8-lite-2017-android-7-0/connectivity/turn-nfc-on-or-off/ Motorola Devices Moto G Play: To use NFC technology on your phone, your phone must be within approximately 0.78 in. (2 cm) of the NFC-enabled smartphone, and smartcard. https://support.motorola.com/uk/en/products/cell-phones/moto-g-family/moto-g4-play/documents/MS112957 Google Pixel Devices Google have some support information for NFC users which provides hardware diagrams to show customers where the NFC reader is on their Pixel and Nexus devices. https://support.google.com/pixelphone/answer/7157629 Nokia devices NFC readers are found on the back of Nokia devices for more info click the following link: https://www.nokia.com/phones/en_int/support/nokia-6-1-user-guide/nfc LG devices LG have a support article for their smart devices complete with diagrams about their NFC detection zones: https://www.lg.com/hk_en/nfc