---
title: "POST /wireless/Sims/{Sid}"
method: POST
path: "/wireless/Sims/{Sid}"
tags: ["PreviewWirelessSim"]
---

# POST /wireless/Sims/{Sid}

`POST /wireless/Sims/{Sid}`

## Request

- Base URL: `https://preview.twilio.com`
- URL: `https://preview.twilio.com/wireless/Sims/{Sid}`
- Auth: HTTP basic

## Path parameters

- `Sid` string, required

## Request body `application/x-www-form-urlencoded`

- object
  - `UniqueName` string
  - `CallbackMethod` string
  - `CallbackUrl` string, uri
  - `FriendlyName` string
  - `RatePlan` string
  - `Status` string
  - `CommandsCallbackMethod` 'GET' | 'POST', http-method
  - `CommandsCallbackUrl` string, uri
  - `SmsFallbackMethod` 'GET' | 'POST', http-method
  - `SmsFallbackUrl` string, uri
  - `SmsMethod` 'GET' | 'POST', http-method
  - `SmsUrl` string, uri
  - `VoiceFallbackMethod` 'GET' | 'POST', http-method
  - `VoiceFallbackUrl` string, uri
  - `VoiceMethod` 'GET' | 'POST', http-method
  - `VoiceUrl` string, uri

## Response `200`

OK

- PreviewWirelessSim
  - `sid` string, nullable
  - `unique_name` string, nullable
  - `account_sid` string, nullable
  - `rate_plan_sid` string, nullable
  - `friendly_name` string, nullable
  - `iccid` string, nullable
  - `e_id` string, nullable
  - `status` string, nullable
  - `commands_callback_url` string, uri, nullable
  - `commands_callback_method` string, nullable
  - `sms_fallback_method` 'GET' | 'POST', http-method, nullable
  - `sms_fallback_url` string, uri, nullable
  - `sms_method` 'GET' | 'POST', http-method, nullable
  - `sms_url` string, uri, nullable
  - `voice_fallback_method` 'GET' | 'POST', http-method, nullable
  - `voice_fallback_url` string, uri, nullable
  - `voice_method` 'GET' | 'POST', http-method, nullable
  - `voice_url` string, uri, nullable
  - `date_created` string, date-time, nullable
  - `date_updated` string, date-time, nullable
  - `url` string, uri, nullable
  - `links` object, nullable

## Changes

> 69 revisions in range; 49 not diffed.

- **2022-08-04** `f637b0d2427b`: 6 breaking, 1 info
  - the `CommandsCallbackMethod` request property format changed from no format to `http-method`
  - the `SmsFallbackMethod` request property format changed from no format to `http-method`
  - the `SmsMethod` request property format changed from no format to `http-method`
  - the `VoiceFallbackMethod` request property format changed from no format to `http-method`
  - …3 more

[Operation history](https://skmtc.dev/twilio/apis/twilio-preview/changes/wireless/Sims/:Sid/post.md)

---

[API](https://skmtc.dev/twilio/apis/twilio-preview.md) - [All operations](https://skmtc.dev/twilio/apis/twilio-preview/llms.txt) - [OpenAPI document](https://skmtc.dev/twilio/apis/twilio-preview/revisions/1d44f6bde1ff?raw)