GSM positioner tracker disassembly

Enter a GSM locator tracker on its own computer, although the GSM error is relatively large, but it is more comprehensive for several times, at least a substantially position. Not much to say, directly above: The rough function has this: 1. Query the sound around the locator: directly dial the number of the card in the locator, and you can hear the sound around the positioner after a few seconds. 2. Query location and map: Send SMS DW to the locator to query the location of the locator in SMS. The positioner will automatically reply to your two messages, one is the specific address, one is the URL of the map picture of the specific location, open this URL with the phone, you can see the map where the locator is located. 3. Set the emergency call: Send a SMS BD to the locator to bind the phone and locator, press the locator boot key locator to make a binding mobile phone to open the monitor. Send BD0 cancel. The hardware is like this seems to be simple, just don't know what effect. It seems that there is such a parameter: --------------- MTK MT61398N --------------- ARM MT6223CA --------------- I heard MTK, I just want to copy the programs inside to modify it. This function can be DIY. I hope that I have a knowledge of recommendations, please study, thank you.

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