diff --git a/GpsTracker/Network.cpp b/GpsTracker/Network.cpp
index 030435d..fb9e6a3 100644
--- a/GpsTracker/Network.cpp
+++ b/GpsTracker/Network.cpp
@@ -1,22 +1,36 @@
 #include "Config.h"
 
-#if BACKUP_ENABLE_NETWORK
 #include "Debug.h"
 #include "Network.h"
 #include "Hardware.h"
 #include "MainUnit.h"
+#include "Rtc.h"
 
 #define LOGGER_NAME "Network"
 
 namespace network {
 
+	timestamp_t _poweredOnTime;
+
+	void powerOn() {
+		hardware::sim808::networkPowerOn();
+		_poweredOnTime = rtc::getTime();
+	}
+
+	void powerOff() {
+		hardware::sim808::networkPowerOff();
+		_poweredOnTime = 0;
+	}
+
 	__attribute__((__optimize__("O2")))
-	SIM808RegistrationStatus waitForRegistered(uint32_t timeout) {
+	SIM808RegistrationStatus waitForRegistered(uint32_t timeout, bool relativeToPowerOnTime = true) {
 
 		SIM808RegistrationStatus currentStatus;
 		SIM808SignalQualityReport report;
 		uint8_t noReliableNetwork = 0;
 
+		if (relativeToPowerOnTime) timeout -= (rtc::getTime() - _poweredOnTime) * 1000;
+
 		do {
 			currentStatus = hardware::sim808::device.getNetworkRegistrationStatus();
 			if (isAvailable(currentStatus.stat)) break;
@@ -50,6 +64,4 @@ namespace network {
 		return hardware::sim808::device.enableGprs(config::main::value.network.apn);
 	}
 	
-	
-}
-#endif
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/GpsTracker/Network.h b/GpsTracker/Network.h
index 33ee41e..a704004 100644
--- a/GpsTracker/Network.h
+++ b/GpsTracker/Network.h
@@ -4,10 +4,10 @@
 
 namespace network {
 
-	inline void powerOn() { hardware::sim808::networkPowerOn(); }
-	inline void powerOff() { hardware::sim808::networkPowerOff(); }
+	void powerOn();
+	void powerOff();
 
-	SIM808RegistrationStatus waitForRegistered(uint32_t timeout);
+	SIM808RegistrationStatus waitForRegistered(uint32_t timeout, bool relativeToPowerOnTime = true);
 	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 81cbaba..341167d 100644
--- a/GpsTracker/NetworkPositionsBackup.cpp
+++ b/GpsTracker/NetworkPositionsBackup.cpp
@@ -53,15 +53,11 @@ namespace positions {
 			//__attribute__((__optimize__("O2")))
 			void NetworkPositionsBackup::appendPositions() {
 				uint16_t currentEntryIndex = config::main::value.network.lastSavedEntry + 1;
-				uint32_t networkTimeout = 0;
 				PositionEntry currentEntry;
 				SIM808RegistrationStatus networkStatus;
 
 				network::powerOn();
-				networkTimeout = NETWORK_DEFAULT_TOTAL_TIMEOUT_MS;
-				if (_prepareTime > 0) networkTimeout -= (rtc::getTime() - _prepareTime) * 1000;
-
-				networkStatus = network::waitForRegistered(networkTimeout);
+				networkStatus = network::waitForRegistered(NETWORK_DEFAULT_TOTAL_TIMEOUT_MS);
 
 				if (!network::isAvailable(networkStatus.stat) || !network::enableGprs()) {
 					networkUnavailableInARow = min(networkUnavailableInARow + 1, POSITIONS_CONFIG_NET_DEFAULT_UNAVAILABLE_NETWORK_POSTPONE_THRESHOLD + 1); //avoid increment overflow
@@ -97,13 +93,8 @@ namespace positions {
 			void NetworkPositionsBackup::prepare() {
 				NOTICE("prepare");
 
-				if (!isBackupNeeded(true)) {
-					_prepareTime = 0;
-					return;
-				}
-
+				if (!isBackupNeeded(true)) return;
 				network::powerOn();
-				_prepareTime = rtc::getTime();
 			}
 
 			void NetworkPositionsBackup::backup(bool force) {
diff --git a/GpsTracker/NetworkPositionsBackup.h b/GpsTracker/NetworkPositionsBackup.h
index 4986093..751a911 100644
--- a/GpsTracker/NetworkPositionsBackup.h
+++ b/GpsTracker/NetworkPositionsBackup.h
@@ -10,8 +10,6 @@ namespace positions {
 
 			class NetworkPositionsBackup : public PositionsBackup {
 			private:
-				timestamp_t _prepareTime;
-
 				bool isBackupNeeded(bool forPrepare);
 				bool appendPosition(PositionEntry &entry);
 				void appendPositions();