diff --git a/app/src/main/java/com/nextcloud/talk/chat/ChatActivity.kt b/app/src/main/java/com/nextcloud/talk/chat/ChatActivity.kt
index 1ca68beb3..0845caddd 100644
--- a/app/src/main/java/com/nextcloud/talk/chat/ChatActivity.kt
+++ b/app/src/main/java/com/nextcloud/talk/chat/ChatActivity.kt
@@ -3747,28 +3747,15 @@ class ChatActivity :
         private const val CONTENT_TYPE_DECK_CARD: Byte = 8
         private const val CONTENT_TYPE_TEMP: Byte = 9
         private const val UNREAD_MESSAGES_MARKER_ID = -1
-        private const val NEW_MESSAGES_POPUP_BUBBLE_DELAY: Long = 200
+        private const val CALL_STARTED_ID = -2
         private const val GET_ROOM_INFO_DELAY_NORMAL: Long = 30000
         private const val GET_ROOM_INFO_DELAY_LOBBY: Long = 5000
-        private const val HTTP_CODE_OK: Int = 200
         private const val AGE_THRESHOLD_FOR_DELETE_MESSAGE: Int = 21600000 // (6 hours in millis = 6 * 3600 * 1000)
         private const val REQUEST_SHARE_FILE_PERMISSION: Int = 221
         private const val REQUEST_RECORD_AUDIO_PERMISSION = 222
         private const val REQUEST_READ_CONTACT_PERMISSION = 234
         private const val REQUEST_CAMERA_PERMISSION = 223
-        private const val OBJECT_MESSAGE: String = "{object}"
-        private const val MINIMUM_VOICE_RECORD_DURATION: Int = 1000
-        private const val MINIMUM_VOICE_RECORD_TO_STOP: Int = 200
-        private const val VOICE_RECORD_CANCEL_SLIDER_X: Int = -50
-        private const val VOICE_RECORD_LOCK_BUTTON_Y: Int = -130
         private const val VOICE_MESSAGE_META_DATA = "{\"messageType\":\"voice-message\"}"
-        private const val VOICE_MESSAGE_FILE_SUFFIX = ".mp3"
-
-        // Samplingrate 22050 was chosen because somehow 44100 failed to playback on safari when recorded on android.
-        // Please test with firefox, chrome, safari and mobile clients if changing anything regarding the sound.
-        private const val VOICE_MESSAGE_SAMPLING_RATE = 22050
-        private const val VOICE_MESSAGE_ENCODING_BIT_RATE = 32000
-        private const val VOICE_MESSAGE_CHANNELS = 1
         private const val FILE_DATE_PATTERN = "yyyy-MM-dd HH-mm-ss"
         private const val VIDEO_SUFFIX = ".mp4"
         private const val FULLY_OPAQUE_INT: Int = 255
@@ -3777,40 +3764,21 @@ class ChatActivity :
         private const val NO_PREVIOUS_MESSAGE_ID: Int = -1
         private const val TOOLBAR_AVATAR_RATIO = 1.5
         private const val STATUS_SIZE_IN_DP = 9f
-        private const val HTTP_CODE_NOT_MODIFIED = 304
-        private const val HTTP_CODE_PRECONDITION_FAILED = 412
         private const val HTTP_BAD_REQUEST = 400
         private const val HTTP_FORBIDDEN = 403
         private const val HTTP_NOT_FOUND = 404
-        private const val QUOTED_MESSAGE_IMAGE_MAX_HEIGHT = 96f
-        private const val MENTION_AUTO_COMPLETE_ELEVATION = 6f
         private const val MESSAGE_PULL_LIMIT = 100
-        private const val PAGE_SIZE = 100
         private const val INVITE_LENGTH = 6
         private const val ACTOR_LENGTH = 6
-        private const val ANIMATION_DURATION: Long = 750
-        private const val LOOKING_INTO_FUTURE_TIMEOUT = 30
         private const val CHUNK_SIZE: Int = 10
         private const val ONE_SECOND_IN_MILLIS = 1000
-        private const val SAMPLE_RATE = 8000
-        private const val VOICE_RECORDING_LOCK_ANIMATION_DURATION = 500
-        private const val AUDIO_VALUE_MAX = 40
-        private const val AUDIO_VALUE_MIN = 20
-        private const val AUDIO_VALUE_SLEEP: Long = 50
         private const val WHITESPACE = " "
         private const val COMMA = ", "
         private const val TYPING_INDICATOR_ANIMATION_DURATION = 200L
         private const val TYPING_INDICATOR_MAX_NAME_LENGTH = 14
         private const val TYPING_INDICATOR_POSITION_VISIBLE = -18f
         private const val TYPING_INDICATOR_POSITION_HIDDEN = -1f
-        private const val TYPING_DURATION_TO_SEND_NEXT_TYPING_MESSAGE = 10000L
-        private const val TYPING_INTERVAL_TO_SEND_NEXT_TYPING_MESSAGE = 1000L
-        private const val TYPING_STARTED_SIGNALING_MESSAGE_TYPE = "startedTyping"
-        private const val TYPING_STOPPED_SIGNALING_MESSAGE_TYPE = "stoppedTyping"
-        private const val CALL_STARTED_ID = -2
         private const val MILISEC_15: Long = 15
-        private const val LINEBREAK = "\n"
-        private const val CURSOR_KEY = "_cursor"
         private const val CURRENT_AUDIO_MESSAGE_KEY = "CURRENT_AUDIO_MESSAGE"
         private const val CURRENT_AUDIO_POSITION_KEY = "CURRENT_AUDIO_POSITION"
         private const val CURRENT_AUDIO_WAS_PLAYING_KEY = "CURRENT_AUDIO_PLAYING"