diff --git a/src/TinyGsmClientBG96.h b/src/TinyGsmClientBG96.h
index c49424c..3a3d287 100644
--- a/src/TinyGsmClientBG96.h
+++ b/src/TinyGsmClientBG96.h
@@ -330,7 +330,7 @@ class TinyGsmBG96 : public TinyGsmModem<TinyGsmBG96>,
   }
 
   // get GPS informations
-  bool getGPSImpl(float* lat, float* lon, float* speed = 0, int* alt = 0,
+  bool getGPSImpl(float* lat, float* lon, float* speed = 0, float* alt = 0,
                   int* vsat = 0, int* usat = 0, float* accuracy = 0,
                   int* year = 0, int* month = 0, int* day = 0, int* hour = 0,
                   int* minute = 0, int* second = 0) {
@@ -380,7 +380,7 @@ class TinyGsmBG96 : public TinyGsmModem<TinyGsmBG96>,
     if (lat != NULL) *lat = ilat;
     if (lon != NULL) *lon = ilon;
     if (speed != NULL) *speed = ispeed;
-    if (alt != NULL) *alt = static_cast<int>(ialt);
+    if (alt != NULL) *alt = ialt;
     if (vsat != NULL) *vsat = 0;
     if (usat != NULL) *usat = iusat;
     if (accuracy != NULL) *accuracy = iaccuracy;
diff --git a/src/TinyGsmClientSIM7000.h b/src/TinyGsmClientSIM7000.h
index e9159d3..2c7262c 100644
--- a/src/TinyGsmClientSIM7000.h
+++ b/src/TinyGsmClientSIM7000.h
@@ -423,7 +423,7 @@ class TinyGsmSim7000 : public TinyGsmModem<TinyGsmSim7000>,
   }
 
   // get GPS informations
-  bool getGPSImpl(float* lat, float* lon, float* speed = 0, int* alt = 0,
+  bool getGPSImpl(float* lat, float* lon, float* speed = 0, float* alt = 0,
                   int* vsat = 0, int* usat = 0, float* accuracy = 0,
                   int* year = 0, int* month = 0, int* day = 0, int* hour = 0,
                   int* minute = 0, int* second = 0) {
@@ -480,7 +480,7 @@ class TinyGsmSim7000 : public TinyGsmModem<TinyGsmSim7000>,
       if (lat != NULL) *lat = ilat;
       if (lon != NULL) *lon = ilon;
       if (speed != NULL) *speed = ispeed;
-      if (alt != NULL) *alt = static_cast<int>(ialt);
+      if (alt != NULL) *alt = ialt;
       if (vsat != NULL) *vsat = ivsat;
       if (usat != NULL) *usat = iusat;
       if (accuracy != NULL) *accuracy = iaccuracy;
diff --git a/src/TinyGsmClientSIM7600.h b/src/TinyGsmClientSIM7600.h
index 0f05a63..3d510be 100644
--- a/src/TinyGsmClientSIM7600.h
+++ b/src/TinyGsmClientSIM7600.h
@@ -438,7 +438,7 @@ class TinyGsmSim7600 : public TinyGsmModem<TinyGsmSim7600>,
   }
 
   // get GPS informations
-  bool getGPSImpl(float* lat, float* lon, float* speed = 0, int* alt = 0,
+  bool getGPSImpl(float* lat, float* lon, float* speed = 0, float* alt = 0,
                   int* vsat = 0, int* usat = 0, float* accuracy = 0,
                   int* year = 0, int* month = 0, int* day = 0, int* hour = 0,
                   int* minute = 0, int* second = 0) {
@@ -449,8 +449,10 @@ class TinyGsmSim7600 : public TinyGsmModem<TinyGsmSim7600>,
                                                 // TODO(?) Can 1 be returned
     if (fixMode == 1 || fixMode == 2 || fixMode == 3) {
       // init variables
-      float ilat         = 0;
-      float ilon         = 0;
+      float ilat = 0;
+      char  north;
+      float ilon = 0;
+      char  east;
       float ispeed       = 0;
       float ialt         = 0;
       int   ivsat        = 0;
@@ -463,14 +465,14 @@ class TinyGsmSim7600 : public TinyGsmModem<TinyGsmSim7600>,
       int   imin         = 0;
       float secondWithSS = 0;
 
-      streamSkipUntil(',');              // GPS satellite valid numbers
-      streamSkipUntil(',');              // GLONASS satellite valid numbers
-      streamSkipUntil(',');              // BEIDOU satellite valid numbers
-      ilat = streamGetFloatBefore(',');  // Latitude in ddmm.mmmmmm
-      char northSouth = stream.read();   // N/S Indicator, N=north or S=south
+      streamSkipUntil(',');               // GPS satellite valid numbers
+      streamSkipUntil(',');               // GLONASS satellite valid numbers
+      streamSkipUntil(',');               // BEIDOU satellite valid numbers
+      ilat  = streamGetFloatBefore(',');  // Latitude in ddmm.mmmmmm
+      north = stream.read();              // N/S Indicator, N=north or S=south
       streamSkipUntil(',');
       ilon = streamGetFloatBefore(',');  // Longitude in ddmm.mmmmmm
-      char eastWest = stream.read();     // E/W Indicator, E=east or W=west
+      east = stream.read();              // E/W Indicator, E=east or W=west
       streamSkipUntil(',');
 
       // Date. Output format is ddmmyy
@@ -496,12 +498,12 @@ class TinyGsmSim7600 : public TinyGsmModem<TinyGsmSim7600>,
       // Set pointers
       if (lat != NULL)
         *lat = (floor(ilat / 100) + fmod(ilat, 100.) / 60) *
-               (northSouth == 'N' ? 1 : -1);
+            (north == 'N' ? 1 : -1);
       if (lon != NULL)
         *lon = (floor(ilon / 100) + fmod(ilon, 100.) / 60) *
-               (eastWest == 'E' ? 1 : -1);
+            (east == 'E' ? 1 : -1);
       if (speed != NULL) *speed = ispeed;
-      if (alt != NULL) *alt = static_cast<int>(ialt);
+      if (alt != NULL) *alt = ialt;
       if (vsat != NULL) *vsat = ivsat;
       if (usat != NULL) *usat = iusat;
       if (accuracy != NULL) *accuracy = iaccuracy;
diff --git a/src/TinyGsmClientSIM808.h b/src/TinyGsmClientSIM808.h
index 943fc84..ab699d1 100644
--- a/src/TinyGsmClientSIM808.h
+++ b/src/TinyGsmClientSIM808.h
@@ -50,7 +50,7 @@ class TinyGsmSim808 : public TinyGsmSim800, public TinyGsmGPS<TinyGsmSim808> {
 
   // get GPS informations
   // works only with ans SIM808 V2
-  bool getGPSImpl(float* lat, float* lon, float* speed = 0, int* alt = 0,
+  bool getGPSImpl(float* lat, float* lon, float* speed = 0, float* alt = 0,
                   int* vsat = 0, int* usat = 0, float* accuracy = 0,
                   int* year = 0, int* month = 0, int* day = 0, int* hour = 0,
                   int* minute = 0, int* second = 0) {
@@ -107,7 +107,7 @@ class TinyGsmSim808 : public TinyGsmSim800, public TinyGsmGPS<TinyGsmSim808> {
       if (lat != NULL) *lat = ilat;
       if (lon != NULL) *lon = ilon;
       if (speed != NULL) *speed = ispeed;
-      if (alt != NULL) *alt = static_cast<int>(ialt);
+      if (alt != NULL) *alt = ialt;
       if (vsat != NULL) *vsat = ivsat;
       if (usat != NULL) *usat = iusat;
       if (accuracy != NULL) *accuracy = iaccuracy;
diff --git a/src/TinyGsmClientSaraR4.h b/src/TinyGsmClientSaraR4.h
index 7815089..dddcbc0 100644
--- a/src/TinyGsmClientSaraR4.h
+++ b/src/TinyGsmClientSaraR4.h
@@ -483,7 +483,7 @@ class TinyGsmSaraR4 : public TinyGsmModem<TinyGsmSaraR4>,
   }
 
   inline bool getUbloxLocation(int8_t sensor, float* lat, float* lon,
-                               float* speed = 0, int* alt = 0, int* vsat = 0,
+                               float* speed = 0, float* alt = 0, int* vsat = 0,
                                int* usat = 0, float* accuracy = 0,
                                int* year = 0, int* month = 0, int* day = 0,
                                int* hour = 0, int* minute = 0,
@@ -556,7 +556,7 @@ class TinyGsmSaraR4 : public TinyGsmModem<TinyGsmSaraR4>,
     if (lat != NULL) *lat = ilat;
     if (lon != NULL) *lon = ilon;
     if (speed != NULL) *speed = ispeed;
-    if (alt != NULL) *alt = static_cast<int>(ialt);
+    if (alt != NULL) *alt = ialt;
     if (vsat != NULL) *vsat = 0;  // Number of satellites viewed not reported;
     if (usat != NULL) *usat = iusat;
     if (accuracy != NULL) *accuracy = iaccuracy;
@@ -578,7 +578,7 @@ class TinyGsmSaraR4 : public TinyGsmModem<TinyGsmSaraR4>,
     return getUbloxLocation(2, lat, lon, 0, 0, 0, 0, accuracy, year, month, day,
                             hour, minute, second);
   }
-  bool getGPSImpl(float* lat, float* lon, float* speed = 0, int* alt = 0,
+  bool getGPSImpl(float* lat, float* lon, float* speed = 0, float* alt = 0,
                   int* vsat = 0, int* usat = 0, float* accuracy = 0,
                   int* year = 0, int* month = 0, int* day = 0, int* hour = 0,
                   int* minute = 0, int* second = 0) {
diff --git a/src/TinyGsmClientUBLOX.h b/src/TinyGsmClientUBLOX.h
index bc551cf..6b64b59 100644
--- a/src/TinyGsmClientUBLOX.h
+++ b/src/TinyGsmClientUBLOX.h
@@ -450,7 +450,7 @@ class TinyGsmUBLOX : public TinyGsmModem<TinyGsmUBLOX>,
   }
 
   inline bool getUbloxLocation(int8_t sensor, float* lat, float* lon,
-                               float* speed = 0, int* alt = 0, int* vsat = 0,
+                               float* speed = 0, float* alt = 0, int* vsat = 0,
                                int* usat = 0, float* accuracy = 0,
                                int* year = 0, int* month = 0, int* day = 0,
                                int* hour = 0, int* minute = 0,
@@ -523,7 +523,7 @@ class TinyGsmUBLOX : public TinyGsmModem<TinyGsmUBLOX>,
     if (lat != NULL) *lat = ilat;
     if (lon != NULL) *lon = ilon;
     if (speed != NULL) *speed = ispeed;
-    if (alt != NULL) *alt = static_cast<int>(ialt);
+    if (alt != NULL) *alt = ialt;
     if (vsat != NULL) *vsat = 0;  // Number of satellites viewed not reported;
     if (usat != NULL) *usat = iusat;
     if (accuracy != NULL) *accuracy = iaccuracy;
@@ -545,7 +545,7 @@ class TinyGsmUBLOX : public TinyGsmModem<TinyGsmUBLOX>,
     return getUbloxLocation(2, lat, lon, 0, 0, 0, 0, accuracy, year, month, day,
                             hour, minute, second);
   }
-  bool getGPSImpl(float* lat, float* lon, float* speed = 0, int* alt = 0,
+  bool getGPSImpl(float* lat, float* lon, float* speed = 0, float* alt = 0,
                   int* vsat = 0, int* usat = 0, float* accuracy = 0,
                   int* year = 0, int* month = 0, int* day = 0, int* hour = 0,
                   int* minute = 0, int* second = 0) {
diff --git a/src/TinyGsmGPS.tpp b/src/TinyGsmGPS.tpp
index 2ed3d25..9d09fc9 100644
--- a/src/TinyGsmGPS.tpp
+++ b/src/TinyGsmGPS.tpp
@@ -28,7 +28,7 @@ class TinyGsmGPS {
   String getGPSraw() {
     return thisModem().getGPSrawImpl();
   }
-  bool getGPS(float* lat, float* lon, float* speed = 0, int* alt = 0,
+  bool getGPS(float* lat, float* lon, float* speed = 0, float* alt = 0,
               int* vsat = 0, int* usat = 0, float* accuracy = 0, int* year = 0,
               int* month = 0, int* day = 0, int* hour = 0, int* minute = 0,
               int* second = 0) {
@@ -61,7 +61,7 @@ class TinyGsmGPS {
   bool   enableGPSImpl() TINY_GSM_ATTR_NOT_IMPLEMENTED;
   bool   disableGPSImpl() TINY_GSM_ATTR_NOT_IMPLEMENTED;
   String getGPSrawImpl() TINY_GSM_ATTR_NOT_IMPLEMENTED;
-  bool   getGPSImpl(float* lat, float* lon, float* speed = 0, int* alt = 0,
+  bool   getGPSImpl(float* lat, float* lon, float* speed = 0, float* alt = 0,
                     int* vsat = 0, int* usat = 0, float* accuracy = 0,
                     int* year = 0, int* month = 0, int* day = 0, int* hour = 0,
                     int* minute = 0,