37: Cell Info

Returns the cached cellular-network information held by the device; GET does not trigger a fresh modem query or wait for network registration. Fields may therefore be unchanged between requests, or zero before a usable sample is available. In firmware build 2644, the cache is replaced when network identity changes or a signal metric changes by more than 3 raw units. Smaller signal changes alone do not replace it. GET and subscription support is firmware-dependent; older builds may not implement these requests.

Header

Field	Name	Description	Type
5	Method	Request a service to be perform an action Possible values: 1: SET— Set one or more values that are provided in the message payload. 2: GET— Get values for the associated message type. 3: SUBSCRIBE— Subscribe to values for the associated message type. Can be used in conjunction with other header fields to define the subscription parameters, such as Interval, Duration, Timeout, Storage Level and Message Level. If no interval is provided, messages will be sent as and when new data is available. Some data, such as GPS position, may require a set interval to be provided. 5: UNSUBSCRIBE— Unsubscribe from a previous subscription.	uint8

This is an extract of header fields that are relevant to this message type, you can find them all documented in the Headers section.

Payload

Field	Name	Description	Type	Unit
4	Network type	Possible values: 0: No network 2: GSM (2G) 3: WCDMA (3G) 4: LTE (4G)	uint8
5	Network MNC	MNC of the currently connected network. Can be 0 if not connected. See mcc-mnc.net	uint16
6	Network MCC	MCC of the currently connected network. Can be 0 if not connected. See mcc-mnc.net	uint16
20	Carrier Squelch		uint8
21	RSRP	Reference Signal Received Power	uint8
22	RSRQ	Reference Signal Received Quality	uint8
23	RSSI	Received Signal Strength Indicator	uint8
24	RSNR	Reference Signal to Noise Ratio	uint8
25	Cell ID		uint32
26	LAC	Location Area Code	uint16

Code

For convenience, the following constants can be used to reference this message type.