Send SMS

The Send SMS feature allows you to send SMS messages directly from the ConnectedYou platform (Currently via API only) to a subscriber’s device (SIM / ICCID).

This is typically used for:

• Notifications

• Alerts

• OTPs (where applicable)

• Service-related communication

Messages are sent programmatically via API and delivered through telecom operator networks to the end device.

Supported Profiles

The A2P SMS feature is currently supported only for the following profiles:

• CYTL02

• CYTL07

• CYTL10

• CYTL14

• CYTL22

• CYTL23

• CYTL25

• CYTL26

• CYTM01

• CYTM02

Access Method

This feature is API-only and is not available via the UI yet.

• Send SMS API: Send SMS

• Get SMS List API: List SMS

SMS Requirements

When sending an SMS, the following constraints apply:

• Only text (alphabetic / standard characters) is supported

• Special encoding or non-text formats are not supported

• Maximum message length: 160 characters

Validity Period Explained

Each SMS request includes a validity period, which defines how long the telecom network will attempt to deliver the message.

How it works

When an SMS is sent:

• If the device is online, the message is delivered immediately

• If the device is offline (e.g., switched off or out of coverage), the message is stored in the SMSC (Short Message Service Center)

• The SMSC will continue trying to deliver the message until the validity period expires

If the device does not become reachable within this time, the message is discarded.

Supported Validity Range

• Minimum: 5 minutes

• Maximum: 7 days

• Unit: Minutes

Default Behavior

• If no validity period is provided in the API request:

  • ConnectedYou will automatically set it to 24 hours

Viewing Sent SMS (Per ICCID)

Customers can retrieve the list of SMS messages sent to a specific ICCID using the Get SMS List API.

Key Points

• SMS history is available per ICCID

• The API returns messages that have been sent to that specific SIM

• Useful for:

  • Auditing

  • Debugging delivery issues

  • Tracking communication history