1NCE data budget

Each SIM has 500 MB in total over its validity period, not 500 MB per month. Battery life and data use have to be measured together.

Theoretical traffic from position reports alone (30-day months, 1 KB = 1,024 bytes per report):

Interval	Reports/day	MB/month/SIM	500 MB lasts
30 s	2,880	84.4	~6 months
1 min	1,440	42.2	~12 months
5 min	288	8.4	~5 years
10 min	144	4.2	~10 years

This is indicative. It is not a measurement of the V53 and leaves out extra network sessions, TCP overhead, retransmissions, heartbeats, SMS and commands. A real 0x0200 GPS frame is about 70 bytes of payload, but each TCP exchange costs more on the wire.

Phimi will add a device diagnostics view that compares 1NCE's usage statistics with the messages the backend actually received, so the real cost per report can be measured. "Find My Cat" (15–30 s) should stay temporary.