Christine_ASUSThanks for the answer.
Thank you for your asking. Kindly try some at-home troubleshooting tips below:
1. Does the issue appear with any specific device or scenario, using NFC for metro or e-pay, on any specific app?
2. Please try SMMI test: Calculator> type ".12345+=">SMMI TEST>NFC Test
If the SMMI test passes, please check any disturbance from installed 3rd party apps.
3. Does the issue appear right after any system/apps' download or update?
Please try to enter "Safe Mode". If the function works well in Safe Mode yet the issue remains out of Safe Mode, please check any disturbance from installed 3rd party apps.
# How to enter and exit "Safe Mode"
4. Have you ever rooted, unlocked, flashed custom rom on your device?