diff --git a/main/CMakeLists.txt b/main/CMakeLists.txt
index 24f639e..6e843d6 100644
--- a/main/CMakeLists.txt
+++ b/main/CMakeLists.txt
@@ -4,6 +4,7 @@ idf_component_register(SRCS
                         "bsp/display.c"
                         "bsp/touch.c"
                         "bsp/lvgl_port.c"
+                        "bsp/boot_button.c"
                         "services/wifi_manager.c"
                         "ui/ui.c"
                         "ui/ui_helpers.c"
diff --git a/main/app/app_main.c b/main/app/app_main.c
index fa78053..27d60ab 100644
--- a/main/app/app_main.c
+++ b/main/app/app_main.c
@@ -6,6 +6,7 @@
 #include "lvgl_port.h"
 #include "touch.h"
 #include "ui.h"
+#include "ui_handlers.h"
 #include "wifi_manager.h"
 
 static const char *TAG = "app";
@@ -35,6 +36,8 @@ void app_main(void)
     ui_init();
     lvgl_port_unlock();
 
+    ui_handlers_init();
+
     ESP_LOGI(TAG, "Starting WiFi");
     wifi_manager_init();
 }
diff --git a/main/app/ui_handlers.c b/main/app/ui_handlers.c
index 12a25bb..84fd8e0 100644
--- a/main/app/ui_handlers.c
+++ b/main/app/ui_handlers.c
@@ -1,6 +1,31 @@
 #include "ui_handlers.h"
+
+#include <stdbool.h>
+
+#include "boot_button.h"
+#include "lvgl_port.h"
+#include "ui.h"
 #include "ui_events.h"
 
+static bool s_showing_screen1;
+
+static void ui_toggle_screen(void)
+{
+    lvgl_port_lock();
+    if (s_showing_screen1) {
+        _ui_screen_change(&ui_Screen2, LV_SCR_LOAD_ANIM_FADE_ON, 200, 0, ui_Screen2_screen_init);
+    } else {
+        _ui_screen_change(&ui_Screen1, LV_SCR_LOAD_ANIM_FADE_ON, 200, 0, ui_Screen1_screen_init);
+    }
+    s_showing_screen1 = !s_showing_screen1;
+    lvgl_port_unlock();
+}
+
+void ui_handlers_init(void)
+{
+    boot_button_init(ui_toggle_screen);
+}
+
 void update_year_action(lv_event_t * e)
 {
     (void)e;
diff --git a/main/app/ui_handlers.h b/main/app/ui_handlers.h
index 74423bd..339e2a4 100644
--- a/main/app/ui_handlers.h
+++ b/main/app/ui_handlers.h
@@ -1,3 +1,4 @@
 #pragma once
 
 /* UI event callbacks declared in ui_events.h are implemented in ui_handlers.c */
+void ui_handlers_init(void);
diff --git a/main/bsp/board_config.h b/main/bsp/board_config.h
index 80d9869..5519d45 100644
--- a/main/bsp/board_config.h
+++ b/main/bsp/board_config.h
@@ -41,6 +41,7 @@
 #define BOARD_TOUCH_ENABLED      1
 
 /* User IO */
+#define BOARD_PIN_BOOT           0
 #define BOARD_PIN_KEY            4
 #define BOARD_PIN_LED            16
 
diff --git a/main/bsp/boot_button.c b/main/bsp/boot_button.c
new file mode 100644
index 0000000..3883d59
--- /dev/null
+++ b/main/bsp/boot_button.c
@@ -0,0 +1,73 @@
+#include "boot_button.h"
+
+#include "board_config.h"
+
+#include "driver/gpio.h"
+#include "esp_log.h"
+#include "freertos/FreeRTOS.h"
+#include "freertos/queue.h"
+#include "freertos/task.h"
+
+static const char *TAG = "boot_btn";
+
+#define BOOT_DEBOUNCE_MS 50
+
+static boot_button_cb_t s_on_press;
+static QueueHandle_t s_gpio_evt_queue;
+
+static void IRAM_ATTR gpio_isr_handler(void *arg)
+{
+    uint32_t gpio_num = (uint32_t)arg;
+    xQueueSendFromISR(s_gpio_evt_queue, &gpio_num, NULL);
+}
+
+static void boot_button_task(void *arg)
+{
+    (void)arg;
+    uint32_t io_num;
+
+    while (1) {
+        if (xQueueReceive(s_gpio_evt_queue, &io_num, portMAX_DELAY) != pdTRUE) {
+            continue;
+        }
+
+        vTaskDelay(pdMS_TO_TICKS(BOOT_DEBOUNCE_MS));
+
+        if (gpio_get_level(BOARD_PIN_BOOT) != 0) {
+            continue;
+        }
+
+        while (gpio_get_level(BOARD_PIN_BOOT) == 0) {
+            vTaskDelay(pdMS_TO_TICKS(10));
+        }
+
+        if (s_on_press != NULL) {
+            s_on_press();
+        }
+    }
+}
+
+void boot_button_init(boot_button_cb_t on_press)
+{
+    s_on_press = on_press;
+
+    gpio_config_t io_conf = {
+        .pin_bit_mask = 1ULL << BOARD_PIN_BOOT,
+        .mode = GPIO_MODE_INPUT,
+        .pull_up_en = GPIO_PULLUP_ENABLE,
+        .pull_down_en = GPIO_PULLDOWN_DISABLE,
+        .intr_type = GPIO_INTR_NEGEDGE,
+    };
+    ESP_ERROR_CHECK(gpio_config(&io_conf));
+
+    s_gpio_evt_queue = xQueueCreate(10, sizeof(uint32_t));
+    esp_err_t err = gpio_install_isr_service(0);
+    if (err != ESP_OK && err != ESP_ERR_INVALID_STATE) {
+        ESP_ERROR_CHECK(err);
+    }
+    ESP_ERROR_CHECK(gpio_isr_handler_add(BOARD_PIN_BOOT, gpio_isr_handler,
+                                         (void *)BOARD_PIN_BOOT));
+
+    xTaskCreate(boot_button_task, "boot_btn", 2048, NULL, 5, NULL);
+    ESP_LOGI(TAG, "BOOT button ready on GPIO%d", BOARD_PIN_BOOT);
+}
diff --git a/main/bsp/boot_button.h b/main/bsp/boot_button.h
new file mode 100644
index 0000000..2a84782
--- /dev/null
+++ b/main/bsp/boot_button.h
@@ -0,0 +1,5 @@
+#pragma once
+
+typedef void (*boot_button_cb_t)(void);
+
+void boot_button_init(boot_button_cb_t on_press);