It has way less to do with the size of the device and more to do with the size of the battery. Not much room left at all between the cell modem and GPS antenna required to make that thing work.
Indeed, the models I have seen have a very short battery life, or check in infrequently, or only check in when movement is detected, or use cell signal triangulation to save battery, etc.
I’ve seen some pretty small GPS trackers with cell modems, I wouldn’t be surprised if these were that instead depending on the price.
Fortunately they hold the charge for realistically short time and therefore are limited in use.
It has way less to do with the size of the device and more to do with the size of the battery. Not much room left at all between the cell modem and GPS antenna required to make that thing work.
Indeed, the models I have seen have a very short battery life, or check in infrequently, or only check in when movement is detected, or use cell signal triangulation to save battery, etc.