Blynk.begin.. used to work now hangs

Need Help With My Project
1

Arduino UNO with FONA800 shield

Suddenly stopped working and hangs on Blynk.begin(auth, modem, apn, user, pass);

Any help much appreciated. Thanks.

#define TINY_GSM_MODEM_SIM800

#include <TinyGsmClient.h>
#include <BlynkSimpleSIM800.h>
#include <SoftwareSerial.h>

#include <Adafruit_Sensor.h>
#include <Rtc_Pcf8563.h>
#include <DHT_U.h>
#include <DHT.h>

#include "Constants.h"
#include "ClockAdapter.h"
#include "PowerManagement.h"
#include "SensorAdapter.h"

//SensorAdapter sensors;
//ClockAdapter clock;
//PowerManagement power;

#define BLYNK_PRINT Serial
#define TINY_GSM_MODEM_SIM800

char auth[] = "xxxxx";

char apn[] = "hologram";
char user[] = "";
char pass[] = "";

SoftwareSerial SerialAT(3, 2); // RX, TX For FONA 800!!!

TinyGsm modem(SerialAT);

BlynkTimer timer;

int activateDelay = 24;


void setup()
{
	Serial.begin(9600);
	Serial.println("Starting");

	//shutdown();

//	sensors.init();
//	power.init();
//	clock.init();

//	power.activateFona();

	// Set GSM module baud rate
	SerialAT.begin(9600);
	delay(3000);

	// Restart takes quite some time
	// To skip it, call init() instead of restart()
	Serial.println("Initializing modem...");
	modem.restart();
	Serial.println("a");

	int bat = modem.getBattPercent();

	Serial.print("Battery ");
	Serial.println(bat);
	Serial.println("aa");

	Blynk.begin(auth, modem, apn, user, pass);
	Serial.println("b");

=== OUTPUT ===
Port open
Starting
Initializing modem...
a
Battery 55
aa
2

If the code did work, but now doesn’t, and nothing has changed, then I’s guess that something has changed with your SIM provider.
Can you test your SIM and SIM800 with a different (non Blynk) test sketch?

Pete.

3

Ran a different test script without Hologram & Blynk . Works connecting to the cell network.

Checked Hologram dashboard and shows my latest connection. That was before code got to Blynk.begin!

I have made program changes but nothing before Blynk.begin and have since commented these out. I’m “reasonably” sure the problem is getting connected to the Blynk server but freely admin there is a ton of stuff beyond my mortal brain to understand. Thanks.

4

Built a new app on the Android tablet and got a new ID. Goes a bit further now:

Starting
Initializing modem…
a
Battery 73
aa
[7815]
___ __ __
/ _ )/ /_ _____ / /__
/ _ / / // / _ / '/
///_, /////_
/__/ v0.6.1 on Arduino Uno

[7924] Modem init…
[8104] Connecting to network…

Waits for a couple on minutes then:

[68193] Register in network failed