A:Answer Hi There,
Thank you for reaching out. I appreciate your interest if the Galaxy A51 has a Face recognition feature. Yes, the device does have the feature.
Please see the user manual on Page 31-32 for further information:
https://downloadcenter.samsung.com/content/UM/202106/20210616000547452/SAM_A516_A716_EN_UM_R_11.0_041921_FINAL_AC.pdf
Should you need more assistance, you may reach us via the following for immediate support:
1. Samsung Community: https://us.community.samsung.com/t5/Samsung-Community/ct-p/us
2. Facebook Messenger: http://m.me/samsungsupport
3. Twitter: https://twitter.com/messages/compose?recepient_ id=18768513
Reference Number: 1144246523
Thank you for choosing Samsung. Have a great day!
^Chrystel