diff --git a/GpsTracker/Config.h b/GpsTracker/Config.h
index a9946d8..bc04f9e 100644
--- a/GpsTracker/Config.h
+++ b/GpsTracker/Config.h
@@ -27,11 +27,11 @@
 #define SLEEP_DEFAULT_TIME_SECONDS						1800
 #define SLEEP_DEFAULT_INCREASE_THRESHOLD				3
 
-#define GPS_DEFAULT_INTERMEDIATE_TIMEOUT_MS				10000
-#define GPS_DEFAULT_TOTAL_TIMEOUT_MS					80000
+#define GPS_DEFAULT_INTERMEDIATE_TIMEOUT_MS				10000L
+#define GPS_DEFAULT_TOTAL_TIMEOUT_MS					80000L
 
-#define NETWORK_DEFAULT_INTERMEDIATE_TIMEOUT_MS			6000
-#define NETWORK_DEFAULT_TOTAL_TIMEOUT_MS				80000
+#define NETWORK_DEFAULT_INTERMEDIATE_TIMEOUT_MS			1000L
+#define NETWORK_DEFAULT_TOTAL_TIMEOUT_MS				80000L
 #define NETWORK_DEFAULT_NO_NETWORK_QUALITY_THRESHOLD	8
 #define NETWORK_DEFAULT_NO_NETWORK_TRIES				5
 
diff --git a/GpsTracker/Hardware.cpp b/GpsTracker/Hardware.cpp
index c12dd39..acd0738 100644
--- a/GpsTracker/Hardware.cpp
+++ b/GpsTracker/Hardware.cpp
@@ -34,9 +34,9 @@ namespace hardware {
 
 		void powerOffIfUnused() {
 			bool gpsPowered = false;
-			bool gprsPowered = false;
+
 			if ((!device.getGpsPowerState(&gpsPowered) || !gpsPowered) &&
-				(!device.getGprsPowerState(&gprsPowered) || !gprsPowered)) {
+				(device.getPhoneFunctionality() != SIM808_PHONE_FUNCTIONALITY::FULL)) {
 				powerOff();
 			}
 		}
diff --git a/GpsTracker/Network.cpp b/GpsTracker/Network.cpp
index d586e98..030435d 100644
--- a/GpsTracker/Network.cpp
+++ b/GpsTracker/Network.cpp
@@ -10,8 +10,8 @@
 
 namespace network {
 
-	SIM808RegistrationStatus waitForRegistered(int32_t timeout) {
-		NOTICE_FORMAT("waitForRegistered", "Timeout : %d", timeout);
+	__attribute__((__optimize__("O2")))
+	SIM808RegistrationStatus waitForRegistered(uint32_t timeout) {
 
 		SIM808RegistrationStatus currentStatus;
 		SIM808SignalQualityReport report;
@@ -33,6 +33,7 @@ namespace network {
 
 			mainunit::deepSleep(NETWORK_DEFAULT_INTERMEDIATE_TIMEOUT_MS / 1000);
 			timeout -= NETWORK_DEFAULT_INTERMEDIATE_TIMEOUT_MS;
+
 		} while (timeout > 1);
 
 		report = hardware::sim808::device.getSignalQuality();
diff --git a/GpsTracker/Network.h b/GpsTracker/Network.h
index 49ad1d7..33ee41e 100644
--- a/GpsTracker/Network.h
+++ b/GpsTracker/Network.h
@@ -7,7 +7,7 @@ namespace network {
 	inline void powerOn() { hardware::sim808::networkPowerOn(); }
 	inline void powerOff() { hardware::sim808::networkPowerOff(); }
 
-	SIM808RegistrationStatus waitForRegistered(int32_t timeout);
+	SIM808RegistrationStatus waitForRegistered(uint32_t timeout);
 	bool isAvailable(SIM808_NETWORK_REGISTRATION_STATE state);
 	bool enableGprs();
 }
\ No newline at end of file
diff --git a/GpsTracker/NetworkPositionsBackup.cpp b/GpsTracker/NetworkPositionsBackup.cpp
index b3135f5..7ab1fc6 100644
--- a/GpsTracker/NetworkPositionsBackup.cpp
+++ b/GpsTracker/NetworkPositionsBackup.cpp
@@ -46,17 +46,16 @@ namespace positions {
 				return responseCode;
 			}
 
-			__attribute__((__optimize__("O2")))
+			//__attribute__((__optimize__("O2")))
 			void NetworkPositionsBackup::appendPositions() {
 				uint16_t currentEntryIndex = config::main::value.network.lastSavedEntry + 1;
-				int32_t networkTimeout = 0;
+				uint32_t networkTimeout = 0;
 				PositionEntry currentEntry;
 				SIM808RegistrationStatus networkStatus;
 
 				network::powerOn();
-				networkTimeout = _prepareTime > 0 ?
-					NETWORK_DEFAULT_TOTAL_TIMEOUT_MS - (rtc::getTime() - _prepareTime) * 1000 :
-					NETWORK_DEFAULT_TOTAL_TIMEOUT_MS;
+				networkTimeout = NETWORK_DEFAULT_TOTAL_TIMEOUT_MS;
+				if (_prepareTime > 0) networkTimeout -= (rtc::getTime() - _prepareTime) * 1000;
 
 				networkStatus = network::waitForRegistered(networkTimeout);