---
page_type: error
code: 63036
message: "63036: The specified phone number cannot be reached using RCS at this time."
level: ERROR
product: Programmable Messaging
---

## Description

The specified phone number cannot be reached using RCS at this time.

### Possible Causes

- Device is switched off
- Device does not have an internet connection
- Device is not RCS Business Messaging capable

### Possible Solutions

Turn on the device, connect to internet, and enable RCS and RCS Business Messaging if the device is running iOS ([more details](https://help.twilio.com/articles/29076535334043-RCS-Messaging-Best-Practices-and-FAQ))