# Delivery reports

Every message has a status that updates as it moves from Iflow to the mobile network and on to the phone.

## Message statuses

| Status | Meaning |
|--------|---------|
| `Sent` | The message has been passed to the mobile network |
| `Delivered` | The network has confirmed the message reached the phone |
| A code, e.g. `9106` | The message wasn't sent. The code says why |
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**Sent** isn't the same as **Delivered**. A phone that's switched off or out of coverage can leave a message at **Sent** until the network delivers it or gives up.

## When a message fails

Look the code up in [Status and error codes](/docs/reference/sms-status-codes/). The most common are:

- **9000**: the number is on your [stop list](/docs/reference/opt-outs/).
- **9007**: the number isn't a valid mobile number.
- **9106**: the account didn't have enough credit. See [Credit and billing](/docs/account/credit-and-billing/).
- **9132**: the destination network doesn't accept sender IDs. Send from a reply number instead.

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## Related

- [Replies](/docs/replies-and-reports/replies/)
- [Status and error codes](/docs/reference/sms-status-codes/)
- [Sending to a large list](/docs/sending/bulk-sending/)

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Source: https://iflow.net/docs/replies-and-reports/delivery-reports/