A:AnswerHi, Momo. This Galaxy A10e is showing to be serviced through Simple Mobile. If you would like to choose the carrier you wish to connect the device to, we would suggested the unlocked version. Thank you for asking this question. ^Kayla
A:AnswerHello there. We would love to get more information to assist you. Please reach out to us on Facebook at (http://m.me/samsungsupport) or Twitter at (https://twitter.com/messages/compose?recipient_id=18768513). We look forward to speaking with you. ^Kayla
A:Answeri honestly don't know, because i use simply mobile and the sim card was already in it. i buy simply mobile prepaid cards and i love it it is the cheapest ive found and it gives me all i need unlimited talk text and some data. i don't know i had a brand new sim card that came with the phone. i hope i helped some what.