I recently bought my grandmother an unlocked Samsung Galaxy S9. She is currently on the Sprint Network and wants to switch over to Boost Mobile.
What I would like to know is if she would need to purchase a Boost Mobile SIM card? We just purchased her Sprint SIM card (she had a Samsung Galaxy S3 before so we couldn't just transfer her SIM card over) and I don't want to have to spend another $10 to buy her a "Boost Mobile" SIM card. Especially since the SIM card that I currently use in my Samsung Galaxy Note 9 says it's a Sprint SIM card.
Thank you in advance for your help!!
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Thank you for your answer! She'll be relieved to know she won't have to buy a new SIM card!