The SIM owner typically provides personal information during the purchase or activation process. This information can include the owner’s full name, date of birth, address, and identification documents (e.g., passport, national ID card, or driver’s license). Depending on the country and local regulations, the telecom operator may be required to verify this information before activating the SIM card. This verification process ensures that the SIM is registered to a legitimate user, which is particularly important for security and legal purposes.
