We use Google notifications server. All the delays might be caused by them.
The pop-up alerts overwrite all of your notifications settings only when the app is open. We will change it over time to our custom internal messages. Banners are prohibited by Apple when app is open.
Check your notifications settings, my iPhone gets them on the lock screen and when the phone is off. I even get them on the Apple watch.
I wonder if this will work in mainland China. Every piece of code related to google is blocked here. The recent change in structure aat google becoming a part of Alphabet.inc was caught up really quickly here. The website was already blocked on the same day. I was using google app engine before, It cannot be accessed anymore unless you have VPN.
I will test PN function soon. And keep you posted. Got a lot to discuss as you mentioned earlier. 
Ohā¦ 
So not really something that will be an easy fix?
With the cloud based server Iām getting delays of up to 4 seconds from the time of pressing the button on the dash to when the device reacts and starts the activity, with the local server its around 80-100ms response, thus for me using the local server is quite crucial.
You mean delays for PN? In that case it doesnāt matter local server or not. Cause this is google servers itself provides a delay. For Android it works well but for iOS for some reason there are delays.
No, not on the PN, on normal operating conditions:
i.e. if i press the button on the Dashboard ā send High to the Primary Arduino ā High via Bridge to Secondary Arduino ā Open Relay via Cloud server takes about 4 seconds, via local its āinstantā
I expect the traffic for the example would look something like:
Mobile Device app ā Cellular Service Provider ā Cloud Server ā Fixed Line Service Provider (DSL) ā Arduino #1 ā Fixed Line Service Provider (DSL) ā Cloud Server ā Fixed Line Service Provider (DSL) ā Arduino #2
Compared to local:
Mobile Device app ā Cellular Service Provider ā Fixed Line Service Provider (DSL) ā Arduino #1 ā local Server ā Arduino #2
Ah, Ok. for that case yes - local server would be the best option. Regarding PN on local serverā¦ Well, I could implement it very quickly for Android and it will work. But with iOS it is not so simple.
Is Twitter supported via local server yet? - Sorry, i have not tested yet
If it is then I can use that as a notification by sending a tweet to a private account and adding the notification through the twitter iOS client
Update: Twitter on the latest 0.7.4 also does not work
PN on android never works for me. At last I think i find the reason. Iām from mainland of China:)
Thatās interesting! I never saw in google docs that they donāt provide pushes for China. Iāll check that.
Its the problem with policy here. Actually no google product is available. The Great Chinese Firewall blocks everything. I might have a solution, maybe you can PM me 
ä½ ęä¹äøč½½ Blynk app å¢ļ¼ęÆē“ę„ę¾å° apkåļ¼
Ok, youāre right. GCM doesnāt work in China =(. And there is no quick way to fix it =(.
For some reasonā¦Notifications were working much better tonightā¦Until I shut down the Blynk App.
QUESTION: Does the app need to be open to receive notifications? (iOS)
I use Google Play on Nexus4 to install/upgrade Blynk.Also another app named čµé£ is used to cross the wall while doing this.
No. But we have limit on number of notifications user can send. Right now it is 1 notification within 1 minute.
Yupā¦I know about the 1 minute rule, but I am not getting notifications when the app isnāt running my iPhone.
Please make a screenshot of your notifications settings, describe how you send them(code), describe your hardware set up.
Weāll start from there
This is all just a test playgroundā¦
iOS, Arduino Uno, SeeedStudio Ethernet Shield V2.0
I have 3 LEDs, 2 PWM LEDs, 4 Relays, a DHT11 Temp sensor, and I have the receiving end of a wireless doorbeel attached to my arduinoās pin 19. See doorBell function.
Thanks for looking.
// Libraries
#include <SPI.h>
#include <EthernetV2_0.h> //SeeedStudio Ethernet Shield
#include <BlynkSimpleEthernetV2_0.h> //Blynk Library for Seeed Shield
#include <SimpleTimer.h> //Timer
#include <dht.h> //DHT11 Temp/Humidity Sensor Library
// Define Ethernet Shield Pin and SD Card Pin
#define W5200_CS 10
#define SDCARD_CS 4
// Initiate DHT11 Temperature/Humidity Sensor on Pin 17
dht DHT;
#define DHT11_PIN 17
// BLYNK Authorization Code
char auth[] = " ";
// SimpleTimer
SimpleTimer timer;
// Celcius to Farenheit Conversion
double Fahrenheit(double celsius)
{
return 1.8 * celsius + 32;
}
//Temp to Virtual Pin 4 - Humidity to Virtual Pin 3
void sendDHT()
{
DHT.read11(DHT11_PIN);
Blynk.virtualWrite(V4, Fahrenheit(DHT.temperature));
Blynk.virtualWrite(V3, DHT.humidity);
}
//Uptime to Virtual Pin 5 - Milliseconds/1000 = 1 sec
void sendUptime()
{
Blynk.virtualWrite(V5, millis() / 1000);
}
//ALL LEDs - ON & OFF
BLYNK_WRITE(V1)
{
if (param.asInt())
{
digitalWrite(14, HIGH);
digitalWrite(15, HIGH);
digitalWrite(16, HIGH);
digitalWrite(9, HIGH);
digitalWrite(3, HIGH);
}
else
{
digitalWrite(14, LOW);
digitalWrite(15, LOW);
digitalWrite(16, LOW);
digitalWrite(9, LOW);
digitalWrite(3, LOW);
}
}
void doorBell()
{
int dbPressed = digitalRead(19);
if (dbPressed == HIGH)
{
digitalWrite(14, HIGH);
delay(500);
digitalWrite(14, LOW);
Blynk.notify("Ding-Dong! Someone is at the door!");
// Blynk.email("email@gmail.com", "Ding-Dong!", "Ding-Dong! Someone is at the door!");
// Blynk.tweet("My Arduino project is tweeting using @blynk_app and itās awesome!\n #arduino #IoT #blynk");
delay(2500);
}
} //End doorBell
void setup()
{
Serial.begin(9600);
pinMode(SDCARD_CS, OUTPUT); //Define SDCard Pin as Output
digitalWrite(SDCARD_CS, HIGH); // Deselect the SDCard
Blynk.begin(auth);
while (!Blynk.connect())
{
// Wait until connected
}
timer.setInterval(1000L, sendUptime);
timer.setInterval(1000L, sendDHT);
timer.setInterval(1000L, doorBell);
} //End Setup
void loop()
{
Blynk.run(); //Loop Blynk
timer.run(); //Loop SimpleTimer Commands
} //End LoopJust as an experiment, try putting notification string on top of everything else. I once had similar issue, but it was hard to reproduce.
You should also try use only notification and remove all the rest. As a test
Test complete. Same results for all. (Ignoring the delays from Google, there may be slight delays from the delays that are there as a debounce for the doorbell).
Notify below the LED blink commands:
- Works when app is running.
- Doesnt work when app is closed.
Notify on top of the LED blink commands:
- Works when app is running.
- Doesnt work when app is closed.
Notify without the LED blink commands (No delay debounce):
- Works when app is running.
- Doesnt work when app is closed.
Though these results are sadly consistent, the Google service is much too inconsistent, making it unusable for certain applications.
Iām hoping there is a fix for my notifications not working when the app is closed.