diff --git a/src/graphics/Screen.cpp b/src/graphics/Screen.cpp
index e5f392036..0899335e6 100644
--- a/src/graphics/Screen.cpp
+++ b/src/graphics/Screen.cpp
@@ -94,6 +94,11 @@ std::vector<MeshModule *> moduleFrames;
 // Stores the last 4 of our hardware ID, to make finding the device for pairing easier
 static char ourId[5];
 
+// vector where symbols (string) are displayed in bottom corner of display.
+std::vector<std::string> functionSymbals;
+// string displayed in bottom right corner of display. Created from elements in functionSymbals vector
+std::string functionSymbalString = "";
+
 #if HAS_GPS
 // GeoCoord object for the screen
 GeoCoord geoCoord;
@@ -260,6 +265,18 @@ static void drawWelcomeScreen(OLEDDisplay *display, OLEDDisplayUiState *state, i
 #endif
 }
 
+// draw overlay in bottom right corner of screen to show when notifications are muted or modifier key is active
+static void drawFunctionOverlay(OLEDDisplay *display, OLEDDisplayUiState *state)
+{
+    // LOG_DEBUG("Drawing function overlay\n");
+    if (functionSymbals.begin() != functionSymbals.end()) {
+        char buf[64];
+        display->setFont(FONT_SMALL);
+        snprintf(buf, sizeof(buf), "%s", functionSymbalString.c_str());
+        display->drawString(SCREEN_WIDTH - display->getStringWidth(buf), SCREEN_HEIGHT - FONT_HEIGHT_SMALL, buf);
+    }
+}
+
 #ifdef USE_EINK
 /// Used on eink displays while in deep sleep
 static void drawDeepSleepScreen(OLEDDisplay *display, OLEDDisplayUiState *state, int16_t x, int16_t y)
@@ -1023,7 +1040,14 @@ void Screen::handleSetOn(bool on, FrameCallback einkScreensaver)
 #if !ARCH_PORTDUINO
             dispdev->displayOn();
 #endif
+
+#if defined(ST7789_CS) &&                                                                                                        \
+    !defined(M5STACK) // set display brightness when turning on screens. Just moved function from TFTDisplay to here.
+            static_cast<TFTDisplay *>(dispdev)->setDisplayBrightness(brightness);
+#endif
+
             dispdev->displayOn();
+
             enabled = true;
             setInterval(0); // Draw ASAP
             runASAP = true;
@@ -1490,6 +1514,11 @@ void Screen::setFrames()
     ui->setFrames(normalFrames, numframes);
     ui->enableAllIndicators();
 
+    // Add function overlay here. This can show when notifications muted, modifier key is active etc
+    static OverlayCallback functionOverlay[] = {drawFunctionOverlay};
+    static const int functionOverlayCount = sizeof(functionOverlay) / sizeof(functionOverlay[0]);
+    ui->setOverlays(functionOverlay, functionOverlayCount);
+
     prevFrame = -1; // Force drawNodeInfo to pick a new node (because our list
                     // just changed)
 
@@ -1573,9 +1602,55 @@ void Screen::blink()
         delay(50);
         count = count - 1;
     }
+    // The dispdev->setBrightness does not work for t-deck display, it seems to run the setBrightness function in OLEDDisplay.
     dispdev->setBrightness(brightness);
 }
 
+void Screen::increaseBrightness()
+{
+    brightness = ((brightness + 62) > 254) ? brightness : (brightness + 62);
+
+#if defined(ST7789_CS)
+    // run the setDisplayBrightness function. This works on t-decks
+    static_cast<TFTDisplay *>(dispdev)->setDisplayBrightness(brightness);
+#endif
+
+    /* TO DO: add little popup in center of screen saying what brightness level it is set to*/
+}
+
+void Screen::decreaseBrightness()
+{
+    brightness = (brightness < 70) ? brightness : (brightness - 62);
+
+#if defined(ST7789_CS)
+    static_cast<TFTDisplay *>(dispdev)->setDisplayBrightness(brightness);
+#endif
+
+    /* TO DO: add little popup in center of screen saying what brightness level it is set to*/
+}
+
+void Screen::setFunctionSymbal(std::string sym)
+{
+    if (std::find(functionSymbals.begin(), functionSymbals.end(), sym) == functionSymbals.end()) {
+        functionSymbals.push_back(sym);
+        functionSymbalString = "";
+        for (auto symbol : functionSymbals) {
+            functionSymbalString = symbol + " " + functionSymbalString;
+        }
+        setFastFramerate();
+    }
+}
+
+void Screen::removeFunctionSymbal(std::string sym)
+{
+    functionSymbals.erase(std::remove(functionSymbals.begin(), functionSymbals.end(), sym), functionSymbals.end());
+    functionSymbalString = "";
+    for (auto symbol : functionSymbals) {
+        functionSymbalString = symbol + " " + functionSymbalString;
+    }
+    setFastFramerate();
+}
+
 std::string Screen::drawTimeDelta(uint32_t days, uint32_t hours, uint32_t minutes, uint32_t seconds)
 {
     std::string uptime;
@@ -1998,4 +2073,4 @@ int Screen::handleInputEvent(const InputEvent *event)
 } // namespace graphics
 #else
 graphics::Screen::Screen(ScanI2C::DeviceAddress, meshtastic_Config_DisplayConfig_OledType, OLEDDISPLAY_GEOMETRY) {}
-#endif // HAS_SCREEN
+#endif // HAS_SCREEN
\ No newline at end of file
diff --git a/src/graphics/Screen.h b/src/graphics/Screen.h
index 2cb1cd5a9..cfb08c0f4 100644
--- a/src/graphics/Screen.h
+++ b/src/graphics/Screen.h
@@ -166,9 +166,6 @@ class Screen : public concurrency::OSThread
     void showPrevFrame() { enqueueCmd(ScreenCmd{.cmd = Cmd::SHOW_PREV_FRAME}); }
     void showNextFrame() { enqueueCmd(ScreenCmd{.cmd = Cmd::SHOW_NEXT_FRAME}); }
 
-    // Implementation to Adjust Brightness
-    uint8_t brightness = BRIGHTNESS_DEFAULT;
-
     /// Starts showing the Bluetooth PIN screen.
     //
     // Switches over to a static frame showing the Bluetooth pairing screen
@@ -202,6 +199,13 @@ class Screen : public concurrency::OSThread
         enqueueCmd(cmd);
     }
 
+    // functions for display brightness
+    void increaseBrightness();
+    void decreaseBrightness();
+
+    void setFunctionSymbal(std::string sym);
+    void removeFunctionSymbal(std::string sym);
+
     /// Stops showing the bluetooth PIN screen.
     void stopBluetoothPinScreen() { enqueueCmd(ScreenCmd{.cmd = Cmd::STOP_BLUETOOTH_PIN_SCREEN}); }
 
@@ -395,6 +399,9 @@ class Screen : public concurrency::OSThread
     // Bluetooth PIN screen)
     bool showingNormalScreen = false;
 
+    // Implementation to Adjust Brightness
+    uint8_t brightness = BRIGHTNESS_DEFAULT; // H = 254, MH = 192, ML = 130 L = 103
+
     /// Holds state for debug information
     DebugInfo debugInfo;
 
diff --git a/src/graphics/TFTDisplay.cpp b/src/graphics/TFTDisplay.cpp
index 36397a826..b19e402b8 100644
--- a/src/graphics/TFTDisplay.cpp
+++ b/src/graphics/TFTDisplay.cpp
@@ -596,7 +596,7 @@ void TFTDisplay::sendCommand(uint8_t com)
         unphone.backlight(true); // using unPhone library
 #endif
 #ifdef RAK14014
-#elif !defined(M5STACK)
+#elif !defined(M5STACK) && !defined(ST7789_CS) // T-Deck gets brightness set in Screen.cpp in the handleSetOn function
         tft->setBrightness(172);
 #endif
         break;
@@ -640,6 +640,12 @@ void TFTDisplay::sendCommand(uint8_t com)
     // Drop all other commands to device (we just update the buffer)
 }
 
+void TFTDisplay::setDisplayBrightness(uint8_t _brightness)
+{
+    tft->setBrightness(_brightness);
+    LOG_DEBUG("Brightness is set to value: %i \n", _brightness);
+}
+
 void TFTDisplay::flipScreenVertically()
 {
 #if defined(T_WATCH_S3)
diff --git a/src/graphics/TFTDisplay.h b/src/graphics/TFTDisplay.h
index 3d6ea6cc6..42aa3abff 100644
--- a/src/graphics/TFTDisplay.h
+++ b/src/graphics/TFTDisplay.h
@@ -30,6 +30,9 @@ class TFTDisplay : public OLEDDisplay
     static bool hasTouch(void);
     static bool getTouch(int16_t *x, int16_t *y);
 
+    // Functions for changing display brightness
+    void setDisplayBrightness(uint8_t);
+
     /**
      * shim to make the abstraction happy
      *
diff --git a/src/input/kbI2cBase.cpp b/src/input/kbI2cBase.cpp
index 74a6c718d..af7c96b20 100644
--- a/src/input/kbI2cBase.cpp
+++ b/src/input/kbI2cBase.cpp
@@ -1,5 +1,4 @@
 #include "kbI2cBase.h"
-
 #include "configuration.h"
 #include "detect/ScanI2C.h"
 
@@ -138,6 +137,9 @@ int32_t KbI2cBase::runOnce()
                     break;
                 case 0x13: // Code scanner says the SYM key is 0x13
                     is_sym = !is_sym;
+                    e.inputEvent = ANYKEY;
+                    e.kbchar =
+                        is_sym ? 0xf1 : 0xf2; // send 0xf1 to tell CannedMessages to display that the modifier key is active
                     break;
                 case 0x0a: // apparently Enter on Q10 is a line feed instead of carriage return
                     e.inputEvent = meshtastic_ModuleConfig_CannedMessageConfig_InputEventChar_SELECT;
@@ -193,6 +195,75 @@ int32_t KbI2cBase::runOnce()
             e.inputEvent = meshtastic_ModuleConfig_CannedMessageConfig_InputEventChar_NONE;
             e.source = this->_originName;
             switch (c) {
+            case 0x71: // This is the button q. If modifier and q pressed, it cancels the input
+                if (is_sym) {
+                    is_sym = false;
+                    e.inputEvent = meshtastic_ModuleConfig_CannedMessageConfig_InputEventChar_CANCEL;
+                } else {
+                    e.inputEvent = ANYKEY;
+                    e.kbchar = c;
+                }
+                break;
+            case 0x74: // letter t. if modifier and t pressed call 'tab'
+                if (is_sym) {
+                    is_sym = false;
+                    e.inputEvent = ANYKEY;
+                    e.kbchar = 0x09; // TAB Scancode
+                } else {
+                    e.inputEvent = ANYKEY;
+                    e.kbchar = c;
+                }
+                break;
+            case 0x6d: // letter m. Modifier makes it mute notifications
+                if (is_sym) {
+                    is_sym = false;
+                    e.inputEvent = ANYKEY;
+                    e.kbchar = 0xac; // mute notifications
+                } else {
+                    e.inputEvent = ANYKEY;
+                    e.kbchar = c;
+                }
+                break;
+            case 0x6f: // letter o(+). Modifier makes screen increase in brightness
+                if (is_sym) {
+                    is_sym = false;
+                    e.inputEvent = ANYKEY;
+                    e.kbchar = 0x11; // Increase Brightness code
+                } else {
+                    e.inputEvent = ANYKEY;
+                    e.kbchar = c;
+                }
+                break;
+            case 0x69: // letter i(-).  Modifier makes screen decrease in brightness
+                if (is_sym) {
+                    is_sym = false;
+                    e.inputEvent = ANYKEY;
+                    e.kbchar = 0x12; // Decrease Brightness code
+                } else {
+                    e.inputEvent = ANYKEY;
+                    e.kbchar = c;
+                }
+                break;
+            case 0x20: // Space. Send network ping like double press does
+                if (is_sym) {
+                    is_sym = false;
+                    e.inputEvent = ANYKEY;
+                    e.kbchar = 0xaf; // (fn + space)
+                } else {
+                    e.inputEvent = ANYKEY;
+                    e.kbchar = c;
+                }
+                break;
+            case 0x67: // letter g. toggle gps
+                if (is_sym) {
+                    is_sym = false;
+                    e.inputEvent = ANYKEY;
+                    e.kbchar = 0x9e;
+                } else {
+                    e.inputEvent = ANYKEY;
+                    e.kbchar = c;
+                }
+                break;
             case 0x1b: // ESC
                 e.inputEvent = meshtastic_ModuleConfig_CannedMessageConfig_InputEventChar_CANCEL;
                 break;
@@ -216,6 +287,12 @@ int32_t KbI2cBase::runOnce()
                 e.inputEvent = meshtastic_ModuleConfig_CannedMessageConfig_InputEventChar_RIGHT;
                 e.kbchar = 0xb7;
                 break;
+            case 0xc: // Modifier key: 0xc is alt+c (Other options could be: 0xea = shift+mic button or 0x4 shift+$(speaker))
+                // toggle moddifiers button.
+                is_sym = !is_sym;
+                e.inputEvent = ANYKEY;
+                e.kbchar = is_sym ? 0xf1 : 0xf2; // send 0xf1 to tell CannedMessages to display that the modifier key is active
+                break;
             case 0x90: // fn+r
             case 0x91: // fn+t
             case 0x9b: // fn+s
@@ -239,6 +316,7 @@ int32_t KbI2cBase::runOnce()
                 }
                 e.inputEvent = ANYKEY;
                 e.kbchar = c;
+                is_sym = false;
                 break;
             }
 
diff --git a/src/modules/CannedMessageModule.cpp b/src/modules/CannedMessageModule.cpp
index 8cfea154e..0f17c268b 100644
--- a/src/modules/CannedMessageModule.cpp
+++ b/src/modules/CannedMessageModule.cpp
@@ -180,11 +180,75 @@ int CannedMessageModule::handleInputEvent(const InputEvent *event)
             (this->runState == CANNED_MESSAGE_RUN_STATE_DISABLED)) {
             this->runState = CANNED_MESSAGE_RUN_STATE_FREETEXT;
         }
-        // pass the pressed key
-        // LOG_DEBUG("Canned message ANYKEY (%x)\n", event->kbchar);
-        this->payload = event->kbchar;
-        this->lastTouchMillis = millis();
-        validEvent = true;
+
+        validEvent = false; // If key is normal than it will be set to true.
+
+        // Run modifier key code below, (doesnt inturrupt typing or reset to start screen page)
+        switch (event->kbchar) {
+        case 0x11: // make screen brighter
+            if (screen)
+                screen->increaseBrightness();
+            LOG_DEBUG("increasing Screen Brightness\n");
+            break;
+        case 0x12: // make screen dimmer
+            if (screen)
+                screen->decreaseBrightness();
+            LOG_DEBUG("Decreasing Screen Brightness\n");
+            break;
+        case 0xf1: // draw modifier (function) symbal
+            if (screen)
+                screen->setFunctionSymbal("Fn");
+            break;
+        case 0xf2: // remove modifier (function) symbal
+            if (screen)
+                screen->removeFunctionSymbal("Fn");
+            break;
+        // mute (switch off/toggle) external notifications on fn+m
+        case 0xac:
+            if (moduleConfig.external_notification.enabled == true) {
+                if (externalNotificationModule->getMute()) {
+                    externalNotificationModule->setMute(false);
+                    showTemporaryMessage("Notifications \nEnabled");
+                    if (screen)
+                        screen->removeFunctionSymbal("M"); // remove the mute symbol from the bottom right corner
+                } else {
+                    externalNotificationModule->stopNow(); // this will turn off all GPIO and sounds and idle the loop
+                    externalNotificationModule->setMute(true);
+                    showTemporaryMessage("Notifications \nDisabled");
+                    if (screen)
+                        screen->setFunctionSymbal("M"); // add the mute symbol to the bottom right corner
+                }
+            }
+            break;
+        case 0x9e: // toggle GPS like triple press does
+#if !MESHTASTIC_EXCLUDE_GPS
+            if (gps != nullptr) {
+                gps->toggleGpsMode();
+            }
+            if (screen)
+                screen->forceDisplay();
+            showTemporaryMessage("GPS Toggled");
+#endif
+            break;
+        case 0xaf: // fn+space send network ping like double press does
+            service.refreshLocalMeshNode();
+            if (service.trySendPosition(NODENUM_BROADCAST, true)) {
+                showTemporaryMessage("Position \nUpdate Sent");
+            } else {
+                showTemporaryMessage("Node Info \nUpdate Sent");
+            }
+            break;
+        default:
+            // pass the pressed key
+            // LOG_DEBUG("Canned message ANYKEY (%x)\n", event->kbchar);
+            this->payload = event->kbchar;
+            this->lastTouchMillis = millis();
+            validEvent = true;
+            break;
+        }
+        if (screen && (event->kbchar != 0xf1)) {
+            screen->removeFunctionSymbal("Fn"); // remove modifier (function) symbal
+        }
     }
     if (event->inputEvent == static_cast<char>(MATRIXKEY)) {
         LOG_DEBUG("Canned message event Matrix key pressed\n");
@@ -390,8 +454,9 @@ int32_t CannedMessageModule::runOnce()
         }
         if (this->runState == CANNED_MESSAGE_RUN_STATE_FREETEXT) {
             e.frameChanged = true;
-            switch (this->payload) {
-            case 0x08: // backspace
+            switch (this->payload) { // code below all trigger the freetext window (where you type to send a message) or reset the
+                                     // display back to the default window
+            case 0x08:               // backspace
                 if (this->freetext.length() > 0) {
                     if (this->cursor == this->freetext.length()) {
                         this->freetext = this->freetext.substring(0, this->freetext.length() - 1);
@@ -403,7 +468,6 @@ int32_t CannedMessageModule::runOnce()
                 }
                 break;
             case 0x09: // tab
-            case 0x91: // alt+t for T-Deck that doesn't have a tab key
                 if (this->destSelect == CANNED_MESSAGE_DESTINATION_TYPE_CHANNEL) {
                     this->destSelect = CANNED_MESSAGE_DESTINATION_TYPE_NONE;
                 } else if (this->destSelect == CANNED_MESSAGE_DESTINATION_TYPE_NODE) {
@@ -416,7 +480,7 @@ int32_t CannedMessageModule::runOnce()
             case 0xb7: // right
                 // already handled above
                 break;
-            // handle fn+s for shutdown
+                // handle fn+s for shutdown
             case 0x9b:
                 if (screen)
                     screen->startShutdownScreen();
@@ -430,37 +494,6 @@ int32_t CannedMessageModule::runOnce()
                 rebootAtMsec = millis() + DEFAULT_REBOOT_SECONDS * 1000;
                 runState = CANNED_MESSAGE_RUN_STATE_INACTIVE;
                 break;
-            case 0x9e: // toggle GPS like triple press does
-#if !MESHTASTIC_EXCLUDE_GPS
-                if (gps != nullptr) {
-                    gps->toggleGpsMode();
-                }
-                if (screen)
-                    screen->forceDisplay();
-                showTemporaryMessage("GPS Toggled");
-#endif
-                break;
-            // mute (switch off/toggle) external notifications on fn+m
-            case 0xac:
-                if (moduleConfig.external_notification.enabled == true) {
-                    if (externalNotificationModule->getMute()) {
-                        externalNotificationModule->setMute(false);
-                        showTemporaryMessage("Notifications \nEnabled");
-                    } else {
-                        externalNotificationModule->stopNow(); // this will turn off all GPIO and sounds and idle the loop
-                        externalNotificationModule->setMute(true);
-                        showTemporaryMessage("Notifications \nDisabled");
-                    }
-                }
-                break;
-            case 0xaf: // fn+space send network ping like double press does
-                service.refreshLocalMeshNode();
-                if (service.trySendPosition(NODENUM_BROADCAST, true)) {
-                    showTemporaryMessage("Position \nUpdate Sent");
-                } else {
-                    showTemporaryMessage("Node Info \nUpdate Sent");
-                }
-                break;
             default:
                 if (this->cursor == this->freetext.length()) {
                     this->freetext += this->payload;
@@ -476,6 +509,8 @@ int32_t CannedMessageModule::runOnce()
                 }
                 break;
             }
+            if (screen)
+                screen->removeFunctionSymbal("Fn");
         }
 
         this->lastTouchMillis = millis();
@@ -787,4 +822,4 @@ String CannedMessageModule::drawWithCursor(String text, int cursor)
     return result;
 }
 
-#endif
+#endif
\ No newline at end of file
diff --git a/variants/t-deck/variant.h b/variants/t-deck/variant.h
index 09db198ec..7efa00c82 100644
--- a/variants/t-deck/variant.h
+++ b/variants/t-deck/variant.h
@@ -18,6 +18,7 @@
 #define TFT_OFFSET_ROTATION 0
 #define SCREEN_ROTATE
 #define SCREEN_TRANSITION_FRAMERATE 5
+#define BRIGHTNESS_DEFAULT 130 // Medium Low Brightness
 
 #define HAS_TOUCHSCREEN 1
 #define SCREEN_TOUCH_INT 16
@@ -96,4 +97,4 @@
 #define SX126X_DIO2_AS_RF_SWITCH
 #define SX126X_DIO3_TCXO_VOLTAGE 1.8
 // Internally the TTGO module hooks the SX1262-DIO2 in to control the TX/RX switch (which is the default for the sx1262interface
-// code)
+// code)
\ No newline at end of file