Banggood H02 GPS Tracker (Product ID: 1031247) on own server (Change server IP to your server's IP and port to 5000 via SMS on the tracker before)

gps-tracker-server.py

#!/usr/bin/env python3

import socket
import datetime
import sys
import geopy
import gpxpy
import gpxpy.gpx
import matplotlib
matplotlib.use('agg')
import matplotlib.pyplot as plt
import smopy

mapfile = 'track.png'
my_lat = 47.85
my_lon = 12.55
plusminus = 0.004
zoom_lvl = 15

filename = 'track.gpx'
gpx = gpxpy.gpx.GPX()
gpx_track = gpxpy.gpx.GPXTrack()
gpx.tracks.append(gpx_track)
gpx_segment = gpxpy.gpx.GPXTrackSegment()
gpx_track.segments.append(gpx_segment)

HOST = ''
PORT = 5000

socket.setdefaulttimeout(5.0)

old_x = 0
old_y = 0

try:
    with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
        s.bind((HOST, PORT))
        s.listen(1)
        while True:
            all_data = []
            try:
                conn, addr = s.accept()
                # print('MSG', end=': ')
                # print(datetime.datetime.utcnow(), end=' ')
                # print(addr, end=' ')
                with conn:
                    while True:
                        data = conn.recv(32)
                        # print(data)
                        all_data.append(data.decode())
                        if not data: 
                            break
            except socket.timeout:
                try:
                    conn.close()
                except:
                    pass
                pass
            p = geopy.point.Point()
            if len(all_data) > 0:
                # print(all_data)
                gps_list = ''.join(all_data).split(',')
                if gps_list[0] != '*hq':
                    del gps_list[0]
                if len(gps_list) > 7:
                    if (gps_list[0] == '*hq' and gps_list[2] == 'VP1' and gps_list[3] == 'B'):
                        geo_str = gps_list[4][:2] + ' ' + gps_list[4][2:] + "' " + gps_list[5] + ' ' + gps_list[6][:3]+ ' ' + gps_list[6][3:] + "' " + gps_list[7]
                        p = geopy.point.Point(geo_str)
                        print(datetime.datetime.utcnow(), end=';')
                        print(addr[0], end=';')
                        print(gps_list[1], end=';')
                        print(p.latitude, end=';')
                        print(p.longitude, end=';')
                        print()
                        gpx_segment.points.append(gpxpy.gpx.GPXTrackPoint(latitude=p.latitude, longitude=p.longitude, time=datetime.datetime.utcnow()))
                        my_lat = p.latitude
                        my_lon = p.longitude
                gps_list.clear()
            sys.stdout.flush()
            try:
                map = smopy.Map(smopy.correct_box((my_lat+plusminus, my_lon+plusminus, my_lat-plusminus, my_lon-plusminus), z=zoom_lvl), z=zoom_lvl)
                ax = map.show_mpl(figsize=(10, 15), dpi=256)
                if p.latitude != 0 and p.longitude != 0:
                    x, y = map.to_pixels(lat=p.latitude, lon=p.longitude)
                    # x, y = map.to_pixels(48.0, 12.5)
                    # print(x)
                    # print(y)
                    old_x = x
                    old_y = y
                    ax.plot(x, y, 'or')
                else:
                    ax.plot(old_x, old_y, 'or')
                plt.show()
                plt.savefig(mapfile)
                plt.close()
                # print('plotted')
            except:
                # raise
                pass
except KeyboardInterrupt:
    fh = open(filename, 'w')
    fh.write(gpx.to_xml())
    fh.close()
    print('Shutdown by CTRL-C...')

Hey, what sms commands did you use to change the server of the device ?