# 83701: Data Session Establishment Failed Due To Internal Error

Log Type: TWILIO

Log Level: ERROR

## Description

An unexpected error occurred while establishing a Data Session for your SIM. This is usually a transient error and should resolve itself in time.

### Possible causes

* An unexpected error occurred in setting up a Data Session for your SIM.

### Possible solutions

* Retry connecting to the Network from your device.
* If this issue persists for your SIM, please contact Twilio Support.