diff --git a/ppp_installer/reconnect_basehat b/ppp_installer/reconnect_basehat
index e870673..fd76725 100644
--- a/ppp_installer/reconnect_basehat
+++ b/ppp_installer/reconnect_basehat
@@ -1,21 +1,89 @@
-#!/bin/sh
-# /usr/src/reconnect 
-# for Base HAT
+#!/bin/env bash
 
-gpio -g mode 26 out	#HAT_POWER_OFF
-gpio -g mode 19 out	#W_DISABLE
+# Pinout for base hat
+POWER_OFF=26
+W_DISABLE=19
 
-gpio -g write 26 0
-gpio -g write 19 0
+# General variables
+INTERVAL=60
+DOUBLE_CHECK_WAIT=10
+PING_TIMEOUT=9
+
+function debug()
+{
+    echo $(date "+%Y/%m/%d - %H:%M:%S :") "$1"
+}
+
+function check_network()
+{
+    # Check the network is ready
+    debug "Checking the network is ready..."
+
+    for i in {1..600}; do
+        NETWORK_OK=0
+
+        debug "SIM Status:"
+        atcom AT+CPIN? OK ERROR 10 | grep "CPIN: READY"
+        SIM_READY=$?
+
+        debug "Network Registeration Status:"
+        # For super SIM
+        atcom AT+CREG? OK ERROR 10 | grep "CREG: 0,5"
+        NETWORK_REG=$?
+        # For native SIM
+        atcom AT+CREG? OK ERROR 10 | grep "CREG: 0,1"
+        NETWORK_REG_2=$?
+        # Combined network registeration status
+        NETWORK_REG=$((NETWORK_REG+NETWORK_REG_2))
+
+        if [[ $SIM_READY -eq 0 ]] && [[ $NETWORK_REG -le 1 ]]; then
+            debug "Network is ready."
+            NETWORK_OK=1
+            return 0
+            break
+        else
+            printf "?"
+        fi
+        sleep 2
+    done
+    return 1
+}
+
+# Control pins
+gpio -g mode $POWER_OFF out	#HAT_POWER_OFF
+gpio -g mode $W_DISABLE out	#W_DISABLE
+
+gpio -g write $POWER_OFF 0
+gpio -g write $W_DISABLE 0
+
+if check_network -eq 0; then 
+    debug "PPP chatscript is starting...";
+    sudo pon;
+else 
+    debug "Network registeration is failed!";
+fi 
 
 while true; do
+    # Checking cellular internet connection
+    ping -q -c 1 -s 0 -w $PING_TIMEOUT -I ppp0 8.8.8.8 > /dev/null 2>&1
+    PINGG=$?
 
-	ping -q -I ppp0 -c 1 8.8.8.8 -s 0 >/dev/null
+    if [[ $PINGG -eq 0 ]]; then
+        printf "."
+    else
+        printf "/"
+        sleep $DOUBLE_CHECK_WAIT
+	    # Checking cellular internet connection
+        ping -q -c 1 -s 0 -w $PING_TIMEOUT -I ppp0 8.8.8.8 > /dev/null 2>&1
+        PINGG=$?
 
-	if [ $? -ne 0 ]; then
-		echo "Connection down, reconnecting..."
-		sudo pon
-	fi
-	
-	sleep 10
+        if [[ $PINGG -eq 0 ]]; then
+            printf "+"
+        else
+	        debug "Connection is down, reconnecting..."
+            if check_network -eq 0; then sleep 0.1; else debug "Network registeration is failed!"; fi
+	        sudo pon
+	    fi
+    fi
+	sleep $INTERVAL
 done
diff --git a/ppp_installer/reconnect_baseshield b/ppp_installer/reconnect_baseshield
index 0688998..b35d7b1 100644
--- a/ppp_installer/reconnect_baseshield
+++ b/ppp_installer/reconnect_baseshield
@@ -1,13 +1,77 @@
-#!/bin/sh
+#!/bin/env bash
+
+INTERVAL=60
+DOUBLE_CHECK_WAIT=10
+PING_TIMEOUT=9
+
+function debug()
+{
+    echo $(date "+%Y/%m/%d - %H:%M:%S :") "$1"
+}
+
+function check_network()
+{
+    # Check the network is ready
+    debug "Checking the network is ready..."
+
+    for i in {1..600}; do
+        NETWORK_OK=0
+
+        debug "SIM Status:"
+        atcom AT+CPIN? OK ERROR 10 | grep "CPIN: READY"
+        SIM_READY=$?
+
+        debug "Network Registeration Status:"
+        # For super SIM
+        atcom AT+CREG? OK ERROR 10 | grep "CREG: 0,5"
+        NETWORK_REG=$?
+        # For native SIM
+        atcom AT+CREG? OK ERROR 10 | grep "CREG: 0,1"
+        NETWORK_REG_2=$?
+        # Combined network registeration status
+        NETWORK_REG=$((NETWORK_REG+NETWORK_REG_2))
+
+        if [[ $SIM_READY -eq 0 ]] && [[ $NETWORK_REG -le 1 ]]; then
+            debug "Network is ready."
+            NETWORK_OK=1
+            return 0
+            break
+        else
+            printf "?"
+        fi
+        sleep 2
+    done
+    return 1
+}
+
+if check_network -eq 0; then 
+    debug "PPP chatscript is starting...";
+    sudo pon;
+else 
+    debug "Network registeration is failed!";
+fi 
 
 while true; do
+    # Checking cellular internet connection
+    ping -q -c 1 -s 0 -w $PING_TIMEOUT -I ppp0 8.8.8.8 > /dev/null 2>&1
+    PINGG=$?
 
-	ping -q -I ppp0 -c 1 8.8.8.8 -s 0 >/dev/null
+    if [[ $PINGG -eq 0 ]]; then
+        printf "."
+    else
+        printf "/"
+        sleep $DOUBLE_CHECK_WAIT
+	    # Checking cellular internet connection
+        ping -q -c 1 -s 0 -w $PING_TIMEOUT -I ppp0 8.8.8.8 > /dev/null 2>&1
+        PINGG=$?
 
-	if [ $? -ne 0 ]; then
-		echo "Connection down, reconnecting..."
-		sudo pon
-	fi
-
-	sleep 10
+        if [[ $PINGG -eq 0 ]]; then
+            printf "+"
+        else
+	        debug "Connection is down, reconnecting..."
+            if check_network -eq 0; then sleep 0.1; else debug "Network registeration is failed!"; fi
+	        sudo pon
+	    fi
+    fi
+	sleep $INTERVAL
 done
diff --git a/ppp_installer/reconnect_cellulariot b/ppp_installer/reconnect_cellulariot
index 35cf79c..53066af 100644
--- a/ppp_installer/reconnect_cellulariot
+++ b/ppp_installer/reconnect_cellulariot
@@ -1,31 +1,129 @@
-#!/bin/sh
+#!/bin/env bash
 
-gpio -g mode 23 in	#status
-gpio -g mode 24 out	#powerkey
-gpio -g mode 17 out	#enable
+# Pinout for cellulariot hat
+STATUS=23
+POWERKEY=24
+ENABLE=17
 
-gpio -g write 17 1
-sleep 1
-gpio -g write 17 0
+# General variables
+INTERVAL=60
+DOUBLE_CHECK_WAIT=10
+PING_TIMEOUT=9
+
+# Configure pins
+gpio -g mode $STATUS in
+gpio -g mode $POWERKEY out
+gpio -g mode $ENABLE out
+
+function debug()
+{
+    echo $(date "+%Y/%m/%d - %H:%M:%S :") "$1"
+}
+
+function check_network()
+{
+    # Check the network is ready
+    debug "Checking the network is ready..."
+
+    for i in {1..600}; do
+        NETWORK_OK=0
+
+        debug "SIM Status:"
+        atcom AT+CPIN? OK ERROR 10 | grep "CPIN: READY"
+        SIM_READY=$?
+
+        debug "Network Registeration Status:"
+        # For super SIM
+        atcom AT+CREG? OK ERROR 10 | grep "CREG: 0,5"
+        NETWORK_REG=$?
+        # For native SIM
+        atcom AT+CREG? OK ERROR 10 | grep "CREG: 0,1"
+        NETWORK_REG_2=$?
+        # Combined network registeration status
+        NETWORK_REG=$((NETWORK_REG+NETWORK_REG_2))
+
+        if [[ $SIM_READY -eq 0 ]] && [[ $NETWORK_REG -le 1 ]]; then
+            debug "Network is ready."
+            NETWORK_OK=1
+            return 0
+            break
+        else
+            printf "?"
+        fi
+        sleep 2
+    done
+    return 1
+}
+
+function power_up_module()
+{
+	for i in {1..20}; do
+		if [[ $(gpio -g read $STATUS) -eq 1 ]]; then
+			debug "Module is powering up..."
+
+			gpio -g write $POWERKEY 1
+			sleep 2
+			gpio -g write $POWERKEY 0
+			sleep 2
+
+			if [[ $(gpio -g read $STATUS) -eq 0 ]]; then
+				debug "Module is powered up."
+				return 0
+				break
+			else
+				debug "Module couldn't be powered up!"
+				sleep 2
+		else
+			debug "Module is just powered up."
+			return 0
+			break
+		fi
+	done
+	return 1 
+}
+
+function restart_power()
+{
+	debug "Power of the module is restarting..."
+	# Restart power
+	gpio -g write $ENABLE 1 # power is disabled 
+	sleep 2
+	gpio -g write $ENABLE 0 # power is enabled
+}
+
+restart_power # Restart power
+
+# Modem power up
+if power_up_module -eq 0 ; then sleep 0.1; else debug "Module couldn't be powered up! Check the hardware setup!"; fi
+
+if check_network -eq 0; then 
+    debug "PPP chatscript is starting...";
+    sudo pon;
+else 
+    debug "Network registeration is failed!";
+fi 
 
 while true; do
+    # Checking cellular internet connection
+    ping -q -c 1 -s 0 -w $PING_TIMEOUT -I ppp0 8.8.8.8 > /dev/null 2>&1
+    PINGG=$?
 
-	if [ $(gpio -g read 23) = "1" ]; then
-		echo "Power up"
+    if [[ $PINGG -eq 0 ]]; then
+        printf "."
+    else
+        printf "/"
+        sleep $DOUBLE_CHECK_WAIT
+	    # Checking cellular internet connection
+        ping -q -c 1 -s 0 -w $PING_TIMEOUT -I ppp0 8.8.8.8 > /dev/null 2>&1
+        PINGG=$?
 
-		#gpio -g write 24 0
-		gpio -g write 24 1
-		sleep 2
-		gpio -g write 24 0
-		sleep 2
-	else
-    		ping -q -I ppp0 -c 1 8.8.8.8 -s 0 >/dev/null
-
-		if [ $? -ne 0 ]; then
-			echo "Connection down, reconnecting..."
-			sudo pon
-		fi
-	fi
-
-	sleep 10
+        if [[ $PINGG -eq 0 ]]; then
+            printf "+"
+        else
+	        debug "Connection is down, reconnecting..."
+            if check_network -eq 0; then sleep 0.1; else debug "Network registeration is failed!"; fi
+	        sudo pon
+	    fi
+    fi
+	sleep $INTERVAL
 done
diff --git a/ppp_installer/reconnect_cellulariot_app b/ppp_installer/reconnect_cellulariot_app
index 5633ecc..945e2fa 100644
--- a/ppp_installer/reconnect_cellulariot_app
+++ b/ppp_installer/reconnect_cellulariot_app
@@ -1,31 +1,130 @@
-#!/bin/sh
+#!/bin/env bash
 
-gpio -g mode 20 in
-gpio -g mode 11 out
-gpio -g mode 26 out
+# Pinout for cellulariot app shield
+STATUS=20
+POWERKEY=11
+DISABLE=26
 
-gpio -g write 26 0
-sleep 1
-gpio -g write 26 1
+# General variables
+INTERVAL=60
+DOUBLE_CHECK_WAIT=10
+PING_TIMEOUT=9
+
+# Configure pins
+gpio -g mode $STATUS in
+gpio -g mode $POWERKEY out
+gpio -g mode $DISABLE out
+
+function debug()
+{
+    echo $(date "+%Y/%m/%d - %H:%M:%S :") "$1"
+}
+
+function check_network()
+{
+    # Check the network is ready
+    debug "Checking the network is ready..."
+
+    for i in {1..600}; do
+        NETWORK_OK=0
+
+        debug "SIM Status:"
+        atcom AT+CPIN? OK ERROR 10 | grep "CPIN: READY"
+        SIM_READY=$?
+
+        debug "Network Registeration Status:"
+        # For super SIM
+        atcom AT+CREG? OK ERROR 10 | grep "CREG: 0,5"
+        NETWORK_REG=$?
+        # For native SIM
+        atcom AT+CREG? OK ERROR 10 | grep "CREG: 0,1"
+        NETWORK_REG_2=$?
+        # Combined network registeration status
+        NETWORK_REG=$((NETWORK_REG+NETWORK_REG_2))
+
+        if [[ $SIM_READY -eq 0 ]] && [[ $NETWORK_REG -le 1 ]]; then
+            debug "Network is ready."
+            NETWORK_OK=1
+            return 0
+            break
+        else
+            printf "?"
+        fi
+        sleep 2
+    done
+    return 1
+}
+
+function power_up_module()
+{
+	for i in {1..20}; do
+		if [[ $(gpio -g read $STATUS) -eq 1 ]]; then
+			debug "Module is powering up..."
+
+			gpio -g write $POWERKEY 0
+			gpio -g write $POWERKEY 1
+			sleep 2
+			gpio -g write $POWERKEY 0
+			sleep 2
+
+			if [[ $(gpio -g read $STATUS) -eq 0 ]]; then
+				debug "Module is powered up."
+				return 0
+				break
+			else
+				debug "Module couldn't be powered up!"
+				sleep 2
+		else
+			debug "Module is just powered up."
+			return 0
+			break
+		fi
+	done
+	return 1 
+}
+
+function restart_power()
+{
+	debug "Power of the module is restarting..."
+	# Restart power
+	gpio -g write $DISABLE 0 # power is disabled 
+	sleep 2
+	gpio -g write $DISABLE 1 # power is enabled
+}
+
+restart_power # Restart power
+
+# Modem power up
+if power_up_module -eq 0 ; then sleep 0.1; else debug "Module couldn't be powered up! Check the hardware setup!"; fi
+
+if check_network -eq 0; then 
+    debug "PPP chatscript is starting...";
+    sudo pon;
+else 
+    debug "Network registeration is failed!";
+fi 
 
 while true; do
+    # Checking cellular internet connection
+    ping -q -c 1 -s 0 -w $PING_TIMEOUT -I ppp0 8.8.8.8 > /dev/null 2>&1
+    PINGG=$?
 
-	if [ $(gpio -g read 20) = "1" ]; then
-		echo "Power up"
+    if [[ $PINGG -eq 0 ]]; then
+        printf "."
+    else
+        printf "/"
+        sleep $DOUBLE_CHECK_WAIT
+	    # Checking cellular internet connection
+        ping -q -c 1 -s 0 -w $PING_TIMEOUT -I ppp0 8.8.8.8 > /dev/null 2>&1
+        PINGG=$?
 
-		gpio -g write 11 0
-		gpio -g write 11 1
-		sleep 2
-		gpio -g write 11 0
-		sleep 2
-	else
-		ping -q -I ppp0 -c 1 8.8.8.8 -s 0 >/dev/null
-
-		if [ $? -ne 0 ]; then
-			echo "Connection down, reconnecting..."
-			sudo pon
-		fi
-	fi
-
-	sleep 10
+        if [[ $PINGG -eq 0 ]]; then
+            printf "+"
+        else
+	        debug "Connection is down, reconnecting..."
+            if check_network -eq 0; then sleep 0.1; else debug "Network registeration is failed!"; fi
+	        sudo pon
+	    fi
+    fi
+	sleep $INTERVAL
 done
diff --git a/ppp_installer/reconnect_gprsshield b/ppp_installer/reconnect_gprsshield
index d68f971..644e59b 100644
--- a/ppp_installer/reconnect_gprsshield
+++ b/ppp_installer/reconnect_gprsshield
@@ -1,26 +1,119 @@
-#!/bin/sh
+#!/bin/env bash
 
-gpio -g mode 19 in
-gpio -g mode 26 out
+# Pinout for cellulariot hat
+STATUS=19
+POWERKEY=26
+
+# General variables
+INTERVAL=60
+DOUBLE_CHECK_WAIT=10
+PING_TIMEOUT=9
+
+# Configure pins
+gpio -g mode $STATUS in
+gpio -g mode $POWERKEY out
+gpio -g mode $ENABLE out
+
+function debug()
+{
+    echo $(date "+%Y/%m/%d - %H:%M:%S :") "$1"
+}
+
+function check_network()
+{
+    # Check the network is ready
+    debug "Checking the network is ready..."
+
+    for i in {1..600}; do
+        NETWORK_OK=0
+
+        debug "SIM Status:"
+        atcom AT+CPIN? OK ERROR 10 | grep "CPIN: READY"
+        SIM_READY=$?
+
+        debug "Network Registeration Status:"
+        # For super SIM
+        atcom AT+CREG? OK ERROR 10 | grep "CREG: 0,5"
+        NETWORK_REG=$?
+        # For native SIM
+        atcom AT+CREG? OK ERROR 10 | grep "CREG: 0,1"
+        NETWORK_REG_2=$?
+        # Combined network registeration status
+        NETWORK_REG=$((NETWORK_REG+NETWORK_REG_2))
+
+        if [[ $SIM_READY -eq 0 ]] && [[ $NETWORK_REG -le 1 ]]; then
+            debug "Network is ready."
+            NETWORK_OK=1
+            return 0
+            break
+        else
+            printf "?"
+        fi
+        sleep 2
+    done
+    return 1
+}
+
+function power_up_module()
+{
+	for i in {1..20}; do
+		if [[ $(gpio -g read $STATUS) -eq 1 ]]; then
+			debug "Module is powering up..."
+
+			gpio -g write $POWERKEY 0
+			gpio -g write $POWERKEY 1
+			sleep 2
+			gpio -g write $POWERKEY 0
+			sleep 2
+
+			if [[ $(gpio -g read $STATUS) -eq 0 ]]; then
+				debug "Module is powered up."
+				return 0
+				break
+			else
+				debug "Module couldn't be powered up!"
+				sleep 2
+		else
+			debug "Module is just powered up."
+			return 0
+			break
+		fi
+	done
+	return 1 
+}
+
+
+# Modem power up
+if power_up_module -eq 0 ; then sleep 0.1; else debug "Module couldn't be powered up! Check the hardware setup!"; fi
+
+if check_network -eq 0; then 
+    debug "PPP chatscript is starting...";
+    sudo pon;
+else 
+    debug "Network registeration is failed!";
+fi 
 
 while true; do
+    # Checking cellular internet connection
+    ping -q -c 1 -s 0 -w $PING_TIMEOUT -I ppp0 8.8.8.8 > /dev/null 2>&1
+    PINGG=$?
 
-	if [ $(gpio -g read 19) = "0" ]; then
-		echo "Power up"
+    if [[ $PINGG -eq 0 ]]; then
+        printf "."
+    else
+        printf "/"
+        sleep $DOUBLE_CHECK_WAIT
+	    # Checking cellular internet connection
+        ping -q -c 1 -s 0 -w $PING_TIMEOUT -I ppp0 8.8.8.8 > /dev/null 2>&1
+        PINGG=$?
 
-		gpio -g write 26 0
-		gpio -g write 26 1
-		sleep 2
-		gpio -g write 26 0
-		sleep 2
-	else
-		ping -q -I ppp0 -c 1 8.8.8.8 -s 0 >/dev/null
-
-		if [ $? -ne 0 ]; then
-			echo "Connection down, reconnecting..."
-			sudo pon
-		fi
-	fi
-
-	sleep 10
+        if [[ $PINGG -eq 0 ]]; then
+            printf "+"
+        else
+	        debug "Connection is down, reconnecting..."
+            if check_network -eq 0; then sleep 0.1; else debug "Network registeration is failed!"; fi
+	        sudo pon
+	    fi
+    fi
+	sleep $INTERVAL
 done
diff --git a/ppp_installer/reconnect_test.sh b/ppp_installer/reconnect_test.sh
new file mode 100644
index 0000000..b35d7b1
--- /dev/null
+++ b/ppp_installer/reconnect_test.sh
@@ -0,0 +1,77 @@
+#!/bin/env bash
+
+INTERVAL=60
+DOUBLE_CHECK_WAIT=10
+PING_TIMEOUT=9
+
+function debug()
+{
+    echo $(date "+%Y/%m/%d - %H:%M:%S :") "$1"
+}
+
+function check_network()
+{
+    # Check the network is ready
+    debug "Checking the network is ready..."
+
+    for i in {1..600}; do
+        NETWORK_OK=0
+
+        debug "SIM Status:"
+        atcom AT+CPIN? OK ERROR 10 | grep "CPIN: READY"
+        SIM_READY=$?
+
+        debug "Network Registeration Status:"
+        # For super SIM
+        atcom AT+CREG? OK ERROR 10 | grep "CREG: 0,5"
+        NETWORK_REG=$?
+        # For native SIM
+        atcom AT+CREG? OK ERROR 10 | grep "CREG: 0,1"
+        NETWORK_REG_2=$?
+        # Combined network registeration status
+        NETWORK_REG=$((NETWORK_REG+NETWORK_REG_2))
+
+        if [[ $SIM_READY -eq 0 ]] && [[ $NETWORK_REG -le 1 ]]; then
+            debug "Network is ready."
+            NETWORK_OK=1
+            return 0
+            break
+        else
+            printf "?"
+        fi
+        sleep 2
+    done
+    return 1
+}
+
+if check_network -eq 0; then 
+    debug "PPP chatscript is starting...";
+    sudo pon;
+else 
+    debug "Network registeration is failed!";
+fi 
+
+while true; do
+    # Checking cellular internet connection
+    ping -q -c 1 -s 0 -w $PING_TIMEOUT -I ppp0 8.8.8.8 > /dev/null 2>&1
+    PINGG=$?
+
+    if [[ $PINGG -eq 0 ]]; then
+        printf "."
+    else
+        printf "/"
+        sleep $DOUBLE_CHECK_WAIT
+	    # Checking cellular internet connection
+        ping -q -c 1 -s 0 -w $PING_TIMEOUT -I ppp0 8.8.8.8 > /dev/null 2>&1
+        PINGG=$?
+
+        if [[ $PINGG -eq 0 ]]; then
+            printf "+"
+        else
+	        debug "Connection is down, reconnecting..."
+            if check_network -eq 0; then sleep 0.1; else debug "Network registeration is failed!"; fi
+	        sudo pon
+	    fi
+    fi
+	sleep $INTERVAL
+done
diff --git a/ppp_installer/reconnect_tracker b/ppp_installer/reconnect_tracker
index faee971..05e5f3d 100644
--- a/ppp_installer/reconnect_tracker
+++ b/ppp_installer/reconnect_tracker
@@ -1,30 +1,131 @@
-#!/bin/sh
+#!/bin/env bash
 
-gpio -g mode 23 in	#status
-gpio -g mode 24 out	#powerkey
-gpio -g mode 17 out	#disable
-# enabling the power of the HAT
-gpio -g write 17 1
-sleep 1
-gpio -g write 17 0
+# Pinout for cellulariot app shield
+STATUS=23
+POWERKEY=24
+DISABLE=17
+
+# General variables
+INTERVAL=60
+DOUBLE_CHECK_WAIT=10
+PING_TIMEOUT=9
+
+# Configure pins
+gpio -g mode $STATUS in
+gpio -g mode $POWERKEY out
+gpio -g mode $DISABLE out
+
+function debug()
+{
+    echo $(date "+%Y/%m/%d - %H:%M:%S :") "$1"
+}
+
+function check_network()
+{
+    # Check the network is ready
+    debug "Checking the network is ready..."
+
+    for i in {1..600}; do
+        NETWORK_OK=0
+
+        debug "SIM Status:"
+        atcom AT+CPIN? OK ERROR 10 | grep "CPIN: READY"
+        SIM_READY=$?
+
+        debug "Network Registeration Status:"
+        # For super SIM
+        atcom AT+CREG? OK ERROR 10 | grep "CREG: 0,5"
+        NETWORK_REG=$?
+        # For native SIM
+        atcom AT+CREG? OK ERROR 10 | grep "CREG: 0,1"
+        NETWORK_REG_2=$?
+        # Combined network registeration status
+        NETWORK_REG=$((NETWORK_REG+NETWORK_REG_2))
+
+        if [[ $SIM_READY -eq 0 ]] && [[ $NETWORK_REG -le 1 ]]; then
+            debug "Network is ready."
+            NETWORK_OK=1
+            return 0
+            break
+        else
+            printf "?"
+        fi
+        sleep 2
+    done
+    return 1
+}
+
+function power_up_module()
+{
+	for i in {1..20}; do
+		if [[ $(gpio -g read $STATUS) -eq 1 ]]; then
+			debug "Module is powering up..."
+
+			gpio -g write $POWERKEY 0
+			gpio -g write $POWERKEY 1
+			sleep 2
+			gpio -g write $POWERKEY 0
+			sleep 2
+
+			if [[ $(gpio -g read $STATUS) -eq 0 ]]; then
+				debug "Module is powered up."
+				return 0
+				break
+			else
+				debug "Module couldn't be powered up!"
+				sleep 2
+		else
+			debug "Module is just powered up."
+			return 0
+			break
+		fi
+	done
+	return 1 
+}
+
+function restart_power()
+{
+	debug "Power of the module is restarting..."
+	# Restart power
+	gpio -g write $DISABLE 0 # power is disabled 
+	sleep 2
+	gpio -g write $DISABLE 1 # power is enabled
+}
+
+restart_power # Restart power
+
+# Modem power up
+if power_up_module -eq 0 ; then sleep 0.1; else debug "Module couldn't be powered up! Check the hardware setup!"; fi
+
+if check_network -eq 0; then 
+    debug "PPP chatscript is starting...";
+    sudo pon;
+else 
+    debug "Network registeration is failed!";
+fi 
 
 while true; do
+    # Checking cellular internet connection
+    ping -q -c 1 -s 0 -w $PING_TIMEOUT -I ppp0 8.8.8.8 > /dev/null 2>&1
+    PINGG=$?
 
-	if [ $(gpio -g read 23) = "0" ]; then
-		echo "Power up"
+    if [[ $PINGG -eq 0 ]]; then
+        printf "."
+    else
+        printf "/"
+        sleep $DOUBLE_CHECK_WAIT
+	    # Checking cellular internet connection
+        ping -q -c 1 -s 0 -w $PING_TIMEOUT -I ppp0 8.8.8.8 > /dev/null 2>&1
+        PINGG=$?
 
-		gpio -g write 24 1
-		sleep 2
-		gpio -g write 24 0
-		sleep 2
-	else
-    	ping -q -I ppp0 -c 1 8.8.8.8 -s 0 >/dev/null
-
-		if [ $? -ne 0 ]; then
-			echo "Connection down, reconnecting..."
-			sudo pon
-		fi
-	fi
-
-	sleep 10
+        if [[ $PINGG -eq 0 ]]; then
+            printf "+"
+        else
+	        debug "Connection is down, reconnecting..."
+            if check_network -eq 0; then sleep 0.1; else debug "Network registeration is failed!"; fi
+	        sudo pon
+	    fi
+    fi
+	sleep $INTERVAL
 done
+