kivy app dont sending data in the background (when screen is off)

Question

Kivy service app dont send any data to mysql when screen is off

Trying write simple app with kivy python which should run the service when you press the button. Service must track gps location (using plyer) and sending Name (from label) Lat Lon (from on_gps_location) and date from var datetime to mysql db. Its actualy working pretty well when you using app or switched it to another app. But when u turning off phone screen service dont stop cause i see the notification about service is running but no one new data dont sending anymore. Note: im testing it with difference phones, its actually working on any phones but not on my (HONOR 30i) Note2: When u select "traffic stat" on your phone it calls that your app spent for example 30mb when u using app and 0mb in background.

There my main.py code:

from kivy.app import App 
from kivy.uix.button import Button 
from kivy.config import Config 
from plyer import gps 
from kivy.uix.gridlayout import GridLayout 
from kivy.uix.label import Label 
from kivy.uix.textinput import TextInput 
from kivy.uix.boxlayout import BoxLayout 
from kivy.uix.anchorlayout import AnchorLayout 
import mysql.connector 
import android 
from mysql.connector import errorcode 
from datetime import datetime 
from kivy.utils import platform 
from kivy.clock import Clock 
import time 
from jnius import autoclass 
from android import AndroidService 
from kivy.storage.jsonstore import JsonStore 
from threading import Thread

store = JsonStore('hello.json')

class MyApp(App):

    def request_android_permissions(self):
        from android.permissions import request_permissions, Permission
        def callback(permissions, results):
            if all([res for res in results]):
                print('callback. All permissions granted.')
            else:
                print('callback. Some permissions refused.')
        request_permissions([Permission.ACCESS_COARSE_LOCATION, Permission.ACCESS_FINE_LOCATION, Permission.ACCESS_BACKGROUND_LOCATION, Permission.WRITE_EXTERNAL_STORAGE], callback)
    def build(self):
    
        if platform == 'android':
            print('Requesting permissions')
            self.request_android_permissions()
        print('App is running')
        
        if len(store) == 0:
            al = AnchorLayout()
            bl = BoxLayout(orientation = 'vertical', size_hint=[None,None], size = [500,300])
            self.lbl1 = Label(text = 'Put your name here')
            bl.add_widget(self.lbl1)
            self.txt1 = TextInput(text = '', multiline = False)
            bl.add_widget(self.txt1)
            bl.add_widget(Button(text = 'Start', on_press = self.btn_press_start))
            al.add_widget(bl)
            return al
        else:
            al = AnchorLayout()
            bl = BoxLayout(orientation = 'vertical', size_hint = [None, None], size = [500,300])
            self.lbl1 = Label(text = 'Hello ' + store.get('Name')['name'])
            bl.add_widget(self.lbl1)
            bl.add_widget(Button(text = 'Start', on_press = self.btn_press_start))
            al.add_widget(bl)
            return al 
        
        

    def btn_press_start(self, instance):
        global name
        if len(store) == 0:
            if instance.text == 'Start': 
                if self.txt1.text != '':
                    self.lbl1.text = 'Hello ' + self.txt1.text
                    store.put('Name', name = self.txt1.text)              
                    print('Beggin')
                    name = self.txt1.text
                    self.start_service()
                    instance.text = 'Stop'
                
                else:
                    self.lbl1.text = 'Write smth there!'
        
            else:
                #gps.stop()
                self.service.stop()
                print('Service stop')
                self.txt1.text = ''
                instance.text = 'Start'
        else:
            if instance.text == 'Start':
                name = store.get('Name')['name']
                self.start_service()
                instance.text = 'Stop'
            else:
                self.service.stop()
                print('Service stop')
                instance.text = 'Start'

    def start_service(self):
        self.service = AndroidService('Service example', 'service is running')
        self.service.start(name)

if name == "main": 
    MyApp().run()

and my service/main.py code:

import os
from os import environ
from kivy.app import App
from kivy.uix.button import Button
from kivy.config import Config
from plyer import gps
from kivy.uix.gridlayout import GridLayout
from kivy.uix.label import Label
from kivy.uix.textinput import TextInput
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.anchorlayout import AnchorLayout
import mysql.connector
import android
from mysql.connector import errorcode
from datetime import datetime
from kivy.utils import platform
from kivy.clock import Clock
import time
from jnius import autoclass
from android import AndroidService

print('SERVICE ON')

arg = environ.get('PYTHON_SERVICE_ARGUMENT', '')

def main():
    gps.configure(on_location = on_gps_location)
    print('Configure succes')
    gps.start(minTime = 2000, minDistance = 0)
    print('Going on')
    time.sleep(10)
    gps.stop()
    print('BEFORE REPEAT')
    config = {
      'user': '', //I CLEAR THIS FIELDS//
      'password': '',
      'host': '',
      'database': '',
      'raise_on_warnings': True
    }
    db = mysql.connector.connect(**config)
    cursor = db.cursor()
    cur_time = datetime.now()
    now = cur_time.strftime("%Y-%m-%d %H:%M:%S")
    data_coord = {
        'name' : arg,
        'c1' : lat,
        'c2' : lon,
        'time': now,
    }
    
    add_coordinate = ("INSERT INTO //YOURDATABASE// (Name, Latitude, Longtitude, Date) VALUES (%(name)s, %(c1)s, %(c2)s, %(time)s)")
    cursor.execute(add_coordinate, data_coord)
    print('DATABASE UPDATE')
    db.commit()
    db.close()
    
def on_gps_location(**kwargs):
    global lat
    global lon
    lat = kwargs['lat']
    lon = kwargs['lon']

    
if __name__ == '__main__':
    while True:
        main()
        time.sleep(20)