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The company exhibits a mixed reputation, with some customers appreciating the prompt delivery and functionality of SIM cards in specific regions, particularly in the U.S. and Europe. However, a significant number of reviews highlight serious concerns regarding product reliability, ineffective customer support, and difficulties in obtaining refunds. Many customers reported frustration with non-functional SIM cards, lack of communication from the company, and inadequate assistance when issues arose. Overall, while there are instances of customer satisfaction, the prevalent negative experiences suggest a critical need for improvement in service reliability and customer support responsiveness.
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Answer: Hi Helen Hayes, Thank you for contacting us. When you get the message "sim not valid" it typically happens because the phone is not unlocked. It will then mark the sim as "not valid" because your device only works with your own provider from which the phone was supplied. In such cases it's best to contact your regular provider to see if they can help you removing the network lock. If the phone is already unlocked, please let us know through customer support and we'll go further from there.
Prepaidzero offers local prepaid sim cards for a broad range of countries worldwide. -Use mobile data at local rates. -Make international and local calls.


Dear Peter,
We are sorry to hear about the delayed reply to one of our tickets.
Is it possible for you to reply on your ticket confirmation email with a follow up request?
We can then reply to your query as soon as possible.
Thank you.