# More data. The same eSIM.

Offer packages compatible with the existing profile. Review their allowance, start rule and published charge before the customer approves another purchase.

## 额度即将用尽。 一个兼容的加量包。

比较符合条件的加量包与仅匹配目的地的套餐。

[浏览充值包](/docs/guides/esim/usage-and-top-ups)
使用虚构数据的交互式示意图。不会执行任何账户操作。

## Match the service. Follow the purchase.

Add an eligible package to an existing eSIM.

### Use the profile’s eligible offers.

A package covering the same country is not necessarily a valid top-up. Compatibility belongs to the allocated service and its supported offers.

### Explain when the data becomes usable.

Present coverage, allowance, validity, published amount and currency. Explain whether the package starts immediately or follows the service’s stacking rule.

### Recover an uncertain order.

Retain the original purchase reference and follow funding and fulfillment. A delayed balance observation is not evidence that the top-up failed or permission to buy it again.

[Explore eSIM top-ups →](/docs/guides/esim/usage-and-top-ups)

## Keep building with eSIM.

Read the observation, inspect the order and keep the package aligned with the trip.

[Usage See reported usage and the allowance left on a package. →](/docs/guides/esim/usage-and-top-ups)

[Order management Find the correct next step for a connectivity purchase. →](/esim-api/features/operations)

[Travel data Help a traveler choose connectivity for the trip. →](/esim-api/features/travel)

[Explore eSIM →](/esim-api)

## 规模扩展 不失控。

在工作区中组织团队，控制 API 访问权限，通过审计日志追踪变更。

[工作区](/docs/guides/workspaces)[团队角色](/docs/guides/users-teams-roles)[API 身份验证](/docs/guides/authentication)
[了解企业方案](/enterprise)

## Start with eSIM. Build across channels with Bird.

[Get Started](/dashboard/signup?returnTo=%2Fdashboard%2Fw%2Fesim) · [Contact Sales](/demo?product=esim)

[Email](/email-api) · [SMS](/sms-api) · [WhatsApp](/whatsapp-api) · [Apple Messages](/apple-messages-api) · [Voice](/voice-api)



## Related resources

- [eSIM connectivity guide](/docs/guides/esim/overview) (docs)
- [What is an eSIM?](/explained/esim/what-is-an-esim) (answer)

[Get an implementation brief](/learn/workspace?topic=esim)