A:AnswerGreetings KChap, thank you for finding the opportunity to ask us your question about the Samsung Galaxy S24 Ultra. The Titanium Black color option is currently available in 256GB or 512GB storage options for AT&T. However, the Titanium Gray color option is currently available in the Unlocked version with the same storage options of 256GB and 512GB. It is compatible with AT&T, Boost Mobile, Cricket, H2O Wireless, MetroPCS, Mint Mobile, Simple Mobile, Sprint, T-Mobile, Ultra Mobile, US Cellular, and Verizon. If you have any other questions for us, let us know by contacting Samsung Support. We'd be happy to assist you further. Thank you for being a trustworthy Samsung customer. - Debra
A:AnswerHello there, we appreciate you reaching out to us with your question about the Samsung Galaxy S24 Ultra. We understand our customers have a range of needs and wants for their chosen device including usage of a micro SD card. In an effort to create devices that are more durable and resistant to both water and dust this device does not support usage of external storage expansion. You can always use cloud based storage expansion if you are finding the included capacity to be insufficient for your needs. Thank you for being a Samsung customer. -Elizabeth
