This article provides information on the expected NFC communication range for NXP products (Connected tags) when used with various mobile phones and the CLRC663 reader.
1// NFC Antenna 54 mm vs 27 mm (NTAG 5 Boost Antenna 10 mm vs 10 mm)
1.1// Used antenna

1.2// Results
Note: NTAG5 Link - Energy harvesting is disabled
2// NFC Antenna 25 mm vs 18 mm
2.1// Used antenna
2.2// Results

Note: NTAG5 Link - Energy harvesting is disabled
3//NFC Antenna 25 mm vs 18 mm with "filling"
3.1// Used antenna

3.2// Results
Note: NTAG5 Link - Energy harvesting is disabled