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Hologram’s SIMs are designed for the Internet of Things (IoT) and Machine to Machine (M2M) communications. They only support data usage and SMS messaging. However, data can be used for VoIP communications.
Note: VoIP communications will consume data according to your device’s codec and call duration.

Send messages to SIMs

Send SMS, TCP, or UDP messages to your devices

SIM pricing

Review pricing information for your SIMs