A:AnswerHi Jackylsgirl!
Thank you for reaching out to us. We appreciate your interest in knowing if Galaxy A13 5G has GSM or CDMA. To answer your question, this phone model has GSM.
For more information, you may visit our website under the "Specs" tab, click on "See All Specs," and look for "Network": https://www.samsung.com/us/mobile/phones/galaxy-a/galaxy-a13-5g-unlocked-sm-a136uzkdxaa/#specs.
Should you need more assistance, please feel free to get back to us via the following options:
1. Facebook Messenger: http://m.me/samsungsupport
2. Twitter: https://twitter.com/messages/compose?recipient_id=18768513
3. Samsung Community: https://us.community.samsung.com/t5/Samsung-Community/ct-p/us
Reference #: 1144262296
Have a great day.
Melardo