co:sim TeamSeptember 21, 2026Updated September 26, 20266 min readeSIM Guides
An ICCID is the identifier assigned to a specific SIM or eSIM profile. It is different from the phone's IMEI2 and from the eUICC identifier (EID). Apple, Google, and Samsung expose these values in device settings because a carrier or travel-eSIM provider may use them to match a profile to an order. co:sim support may ask for an order reference first; share an ICCID only through an official support channel.
The ICCID follows the SIM profile. IMEI2 identifies the phone's second cellular identity, often the eSIM radio slot, while EID identifies the embedded secure chip that stores profiles. Replacing a profile can change the ICCID without changing the EID or IMEI2. These identifiers are not interchangeable, and a screenshot of one cannot substitute for another when a support form asks for a specific field.
On iPhone, open Settings, General, About and scroll to the SIM section. Pixel and Galaxy show SIM or device identifiers in About phone and SIM status screens; the exact label varies by Android version and carrier. Select the travel line before copying a value when two profiles are installed. co:sim's dashboard and delivery email identify the purchase separately from the handset identifiers.
An ICCID is not a password, but it is still account-related data. Do not post it publicly or include it in an untrusted screenshot. A legitimate support agent may use it to locate the profile, alongside the order email and device details. Never send a QR code or activation code merely because someone asks for an ICCID.
Use the exact field the support agent requests. An ICCID identifies a SIM profile; an EID identifies the device's embedded eSIM chip; an IMEI identifies a cellular device identity. IMEI2 commonly labels the second cellular identity on a dual-SIM handset. They may appear close together in Settings, but a copied EID does not answer a request for ICCID. If two eSIM profiles are installed, check the line label and order details before sending a screenshot. Hide unrelated numbers and personal information. co:sim support may first ask for the order reference because that links the purchase to the supplied profile.
#Why can the number change without changing your phone?
A provider can issue a replacement profile or a new eSIM for a later purchase. That profile can carry a different ICCID while the phone's EID remains the same. Conversely, moving service to a different handset changes the device identifiers even if the account relationship continues. This is why the ICCID should not be treated as an order number, a password, or permanent proof of ownership. The identifier on a screenshot can also be stale if a line was removed or replaced. When diagnosing service, give support the current device information, the relevant purchase, and the exact error rather than sending only a long number.
Check whether the eSIM download completed and whether the correct line is selected in Settings. The menu label differs across iPhone, Pixel, and Galaxy versions, and a disabled line can still be listed elsewhere in the SIM section. Do not delete the profile just to make the number reappear. If the phone shows an EID but no travel-line ICCID, the profile may not have installed successfully or the interface may be hiding that field. Ask co:sim support which identifier they need and send the order reference through the official channel.
No. An ICCID identifies a SIM or eSIM profile; it does not certify that the profile is currently registered on a network or that mobile data is working. A phone may show the number while its line is disabled, while the traveler is outside the supported destination, or while the carrier has not finished provisioning. To diagnose service, check the active data line, the network name, the plan destination, and the exact device error. A small webpage test with Wi-Fi off can show whether mobile data works, but avoid a large download as the first test. co:sim's plan page and account dashboard provide the purchase and plan context; the ICCID helps support locate the profile. Treat all of these as separate pieces of evidence, rather than assuming that one visible identifier settles the issue.
It can. A transfer, replacement, or fresh issuance may create a different eSIM profile with a new ICCID, even when the service relationship or order history remains recognizable to the provider. The EID belongs to the eSIM chip in a particular handset, and IMEI or IMEI2 belongs to the phone's cellular hardware identity, so those fields answer different questions. Travel profiles also may not support self-service transfer or QR reuse. Do not delete a working profile in order to test whether its ICCID changes. Ask the provider about the specific plan's transfer or replacement process first. When contacting co:sim, include the order reference and describe whether the original device still holds the profile; support can then say which current identifier is useful for the case.
An ICCID is not an account password and by itself should not grant access to your account. It is nevertheless an account-related identifier that can help a carrier or support team locate a SIM profile. Avoid posting the full number publicly or leaving it visible in screenshots shared on forums. Never send an activation QR code, one-time code, or account credentials merely because someone requests an ICCID; those are different, more sensitive items. If an official co:sim support agent needs the ICCID, send it through the normal support channel together with the order reference and the relevant device details. Crop screenshots so they show the requested field and line label, but not unrelated identifiers. This reduces confusion on dual-SIM phones and limits unnecessary exposure.
co:sim Team
