Note: VoIP communications will consume data according to your device’s codec and call duration.
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Does the Hologram SIM support voice calling?
Hologram IoT SIMs support VoIP communications using data.
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.