I was buy Xexun TK-103B, but after shipment i was check imei, and it as a clone of xexun. My imei is 352887071940682
I was check communication on site http://id.wialon.net, and it is ok with ip adress 126.96.36.199 port 20222 like a GT06, after few second my gps tracker shows up on this site.
Then i change ip to 188.8.131.52 port 20222, add my car on website https://svcs.gps-trace.com/, then i see tha my car have a status "Unit is online" green, so it's ok, but no location, on map. When i call to number inside gps tracker it was give me back location gps by sms. So gprs/sms and gps it's ok, i think.