Developing your own hardware is expensive. Our company has few requirements for our hardware. Cellular communication, GPS transmission and capturing acceleration.
Since we need only max to 1,000-5,000 devices the production costs is up to around $100 per device. So we thought of attaching cheap Xiaomi smartphone instead of it. (around $200)
But the best way to achieve this is using others hardware which as same functionality such as car GPS tracker, pet GPS tracker etc..
Wouldn't there be any Device I can use for this? With custom firmware, API, and hardware casing.