Why doesn’t my phone “read” the contactless card?

Ensure that your device has NFC. If it does, you need to enable the NFC function as follows:
• Go to Settings > More.
• Tap the NFC switch to turn it on. The Android Beam function will be activated automatically.
• If the Android Beam function does not activate automatically, simply tap it and select “Yes” to turn it on. The NFC capabilities of smartphones work in conjunction with the Android Beam function. If Android Beam is turned off, it may limit the NFC sharing capability.