Works very well for the price 1

This device works great for the price.
All tested features work except web gprs plotter recommended that indicates an error message "IMEI has expired." But suffice it to register on a free tracer (gps looking orange trail ...) and it works.
Obviously, it should not be complete computer novice to take full advantage.
For against, get the SMS position is a breeze (you still have an old GSM sim card that takes the normal size to remove the pin code).
Small problem: GPS and GSM antennas are not so easy to conceal. Perhaps a device all in one (TK102 kind) works as well.
And do not think this is a very sturdy lock. An old radio easily detect if your vehicle emits waves GSM ... and if the device is found, you may well never have the slightest warning (especially if you have not activated door alarm) .. .before cut some of that cable either, just a pen tip to eject the SIM card and presto, it's over!
More useful as a locator to consensual against theft or use by kids, as against organized gangs who want to take your Porsche Cayenne! :-)