Don't have original SIM card

Feb 27, 2018
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I bought a sprint phone from a guy, it dont have the original sim card and I need to get it unlocked. I have an uicc unlock code but it's telling me I need the original service provider sim. This is an emergency I need a phone just in case I go into labor! My phone is a galaxy s7! Is there anyway i can get another uicc sim card for this phone?
 
Solution
Buy a SIM from the original service provider and see if that helps. The device should adopt the SIM and you could make calls with it.