diff --git a/backend/routes/authRoutes.js b/backend/routes/authRoutes.js
index 7f26197ba9c3e624a08a07c8dba9acdd3ea3fafe..d34fc2ff9b90265655a73260ef7adc5ce5f731af 100644
--- a/backend/routes/authRoutes.js
+++ b/backend/routes/authRoutes.js
@@ -4,6 +4,18 @@ const mongoose = require('mongoose');
 const router = express.Router();
 const userFromDb = require('../models/userModel');
 
+router.post('/test', (req, res)=>{
+    const username = req.body.username;
+    const password = req.body.password;
+    console.log( username + ' ' + password );
+    if (username == 'test'){
+        return res.status(200).send('Valid username');
+    }
+    else{
+        return res.status(422).send('Invalid username');
+    }
+})
+
 //register post
 router.post('/signup', (req, res)=>{
     console.log(req.body);
@@ -20,7 +32,7 @@ router.post('/signup', (req, res)=>{
         else{
             const user = new userFromDb({username:username, password:password});
             user.save();
-            res.send('User registered');
+            res.status(200).send('User registered');
         }
     })
 })
@@ -42,7 +54,7 @@ router.post('/signin', (req, res)=>{
                 if (err) throw err;
                 //console.log(password, isMatch);
                 if (isMatch){
-                    res.send('Login successful');
+                    res.status(200).send('Login successful');
                 }else{
                     return res.status(422).send('Invalid username or password');
                 }
diff --git a/mobile/App.js b/mobile/App.js
index e49001ad813bd19bdcc2332f60258b620762754d..2625a9ee863ce315633fb81b5e5ee6a17007e0d0 100644
--- a/mobile/App.js
+++ b/mobile/App.js
@@ -1,8 +1,9 @@
 import React from 'react';
 import { NavigationContainer } from '@react-navigation/native';
 import { createNativeStackNavigator } from '@react-navigation/native-stack';
+import LoginScreen from './Screens/loginScreen'
 import HomeScreen from './Screens/homeScreen'
-import SecondScreen from './Screens/secondScreen'
+import RegistrationScreen from './Screens/registrationScreen'
 
 const Stack = createNativeStackNavigator();
 
@@ -14,12 +15,16 @@ class App extends React.Component {
       <NavigationContainer>
       <Stack.Navigator>
         <Stack.Screen
-          name="Home"
-          component={HomeScreen}
+          name="Login"
+          component={LoginScreen}
         />
         <Stack.Screen
-            name="Second"
-            component={SecondScreen}
+            name="Home"
+            component={HomeScreen}
+          />
+        <Stack.Screen
+            name="Registration"
+            component={RegistrationScreen}
           />
       </Stack.Navigator>
     </NavigationContainer>
diff --git a/mobile/Screens/homeScreen.js b/mobile/Screens/homeScreen.js
index 5bb1cff2c31c1deda561e035ffd785dabd7d6baa..8ef997b22ebaa0ee5003f9296c857353f40d9f50 100644
--- a/mobile/Screens/homeScreen.js
+++ b/mobile/Screens/homeScreen.js
@@ -1,19 +1,12 @@
 import React, {Component} from 'react';
 import { StyleSheet, Text, View, Button, TextInput } from 'react-native';
-import io from "socket.io-client";
+import {io} from "socket.io-client"; //socket.io-client
 
 class HomeScreen extends Component {
-    constructor(props) {
-        super(props);
-        this.state = {
-          chatMessage: "",
-          chatMessages: []
-        };
-      }
 
-    componentDidMount() {
-    this.socket = io("http://0.0.0.0:3000", {
-        transports: ['websocket'] //this line is fundamental
+  componentDidMount() {
+    const socket = io("http://192.168.178.92:3000", {
+      transports: ['websocket'] //this line is fundamental
     });
     }
 
@@ -42,16 +35,11 @@ class HomeScreen extends Component {
             <TextInput
             style={{ height: 40, borderWidth: 2 }}
             autoCorrect={false}
-            value={this.state.chatMessage}
-            onSubmitEditing={() => this.submitChatMessage()}
-            onChangeText={chatMessage => {
-                this.setState({ chatMessage });
-            }}
+
             />
-            {chatMessages}
-        </View>
-        );
-    }
+      </View>
+    );
+  }
 }
 
 // ...
diff --git a/mobile/Screens/loginScreen.js b/mobile/Screens/loginScreen.js
new file mode 100644
index 0000000000000000000000000000000000000000..7515fe161f206f318436bee1e1c4365c50e56eae
--- /dev/null
+++ b/mobile/Screens/loginScreen.js
@@ -0,0 +1,103 @@
+import React, {Component} from 'react';
+import { StyleSheet, Text, View, Button, TextInput } from 'react-native';
+
+class LoginScreen extends Component {
+    constructor(props) {
+        super(props);
+        this.state = {
+          username: "",
+          password: ""
+        };
+      }
+
+    submitLogin() {
+    //try to post something to the server
+    
+    fetch('http://192.168.178.92:3000/signin', {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+      },
+      body: JSON.stringify({
+        username : this.state.username,
+        password : this.state.password
+      }),
+    })
+    .then(res =>{
+      if (res.status !== 200){
+        alert('Invalid username or password');
+      }
+      else{
+        alert('Succesful login')
+        this.props.navigation.navigate('Home')
+      }
+    })
+
+    this.setState({ username: "" });
+    this.setState({ password: "" });
+    }
+
+    render() {
+
+        return (
+        <View style={styles.container}>
+            <Text>LOGIN</Text>
+
+            <TextInput
+            style={styles.TextInput}
+            placeholder = "Username"
+            autoCorrect = {false}
+            value = {this.state.username}
+            onChangeText = {username => {
+                this.setState({ username });
+              }}
+            />
+            
+
+            <TextInput
+            style={styles.TextInput}
+            placeholder="Password"
+            autoCorrect={false}
+            secureTextEntry={true}
+            value = {this.state.password}
+            onChangeText = {password => {
+                this.setState({ password });
+              }}
+            />
+
+            <Button
+            title="Login"
+            onPress={() =>
+                this.submitLogin()
+              }
+            />
+            {/* this will be the button for the registration page */}
+            <Button
+            title="Go to Registration"
+            onPress={() => {
+                this.props.navigation.navigate('Registration')
+              }   
+            }
+            />
+          </View>
+        );
+    }
+}
+
+// ...
+const styles = StyleSheet.create({
+    container: {
+      flex: 1,
+      backgroundColor: '#fff',
+      alignItems: 'center',
+      justifyContent: 'center',
+    },
+    TextInput: {
+      height: 40,
+      width: 200,
+      borderWidth: 2,
+      padding:10
+    }
+  });
+
+export default LoginScreen;
\ No newline at end of file
diff --git a/mobile/Screens/registrationScreen.js b/mobile/Screens/registrationScreen.js
new file mode 100644
index 0000000000000000000000000000000000000000..80fdbb4acf4ec3eb6d75486010dfec9b692f6f7a
--- /dev/null
+++ b/mobile/Screens/registrationScreen.js
@@ -0,0 +1,102 @@
+import React, {Component} from 'react';
+import { StyleSheet, Text, View, Button, TextInput } from 'react-native';
+
+class RegistrationScreen extends Component {
+    constructor(props) {
+        super(props);
+        this.state = {
+          username: "",
+          password: ""
+        };
+      }
+
+    submitRegistration() {
+    //try to post something to the server
+    
+    fetch('http://192.168.178.92:3000/signup', {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+      },
+      body: JSON.stringify({
+        username : this.state.username,
+        password : this.state.password
+      }),
+    })
+    .then(res =>{
+      if (res.status !== 200){
+        alert('Invalid username');
+      }
+      else{
+        alert('User registered');
+        this.props.navigation.navigate('Login');
+      }
+    })
+
+    this.setState({ username: "" });
+    this.setState({ password: "" });
+    }
+
+    render() {
+
+        return (
+        <View style={styles.container}>
+            <Text>REGISTRATION</Text>
+
+            <TextInput
+            style={styles.TextInput}
+            placeholder = "Username"
+            autoCorrect = {false}
+            value = {this.state.username}
+            onChangeText = {username => {
+                this.setState({ username });
+              }}
+            />
+            
+
+            <TextInput
+            style={styles.TextInput}
+            placeholder="Password"
+            autoCorrect={false}
+            secureTextEntry={true}
+            value = {this.state.password}
+            onChangeText = {password => {
+                this.setState({ password });
+              }}
+            />
+
+            <Button
+            title="Register"
+            onPress={() =>
+                this.submitRegistration()
+              }
+            />
+            {/* this will be the button for the registration page */}
+            <Button
+            title="Go to Login"
+            onPress={() =>
+                this.props.navigation.navigate('Login')
+            }
+            />
+          </View>
+        );
+    }
+}
+
+// ...
+const styles = StyleSheet.create({
+    container: {
+      flex: 1,
+      backgroundColor: '#fff',
+      alignItems: 'center',
+      justifyContent: 'center',
+    },
+    TextInput: {
+      height: 40,
+      width: 200,
+      borderWidth: 2,
+      padding:10
+    }
+  });
+
+export default RegistrationScreen;
\ No newline at end of file