Skip to main content

​
Networking overhead

Due to networking overhead, the bandwidth used by a device will be higher than the sum of bytes your application sends and receives. Each TCP packet (and therefore each Hologram Cloud message) incurs an overhead of about 500-700 bytes. This means that to reduce data charges, you should prefer fewer large messages over more small messages. Messages larger than about 2kB may be split into multiple packets, so this optimization is mainly relevant for very small messages. Also, keep in mind that higher-level protocols such as HTTP have their own headers which may inflate the per-message overhead.

​
Inbound and outbound data

Usage data includes both inbound and outbound traffic for a device.

​
Network activity monitoring tools

Measure device traffic using standard tools: If your device is using odd or unexpected amounts of data, please refer to our guide on unexpected data usage.

​
Manage data usage in the Dashboard

Monitor single SIM data usage

View data usage for multiple SIMs

Set usage limits