Hi Tessiepw12,
Thank you for bringing this to our attention. We appreciate your time knowing if our Galaxy S10 is 5g compatible. Looking at its user's manual, it is indeed 5g compatible, but it is carrier dependent.
Please refer to this user manual on page 7 for further reference:
https://downloadcenter.samsung.com/content/UM/202103/20210324225616847/SAM_SM-G970_G973_G975_EN_UM_R_11.0_031821_FINAL.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: 1144192855
Thank you for choosing Samsung. Have a great day!
^Chrystel