diff --git a/board/boards/black.h b/board/boards/black.h
index 6e73c25c13..4b574f6698 100644
--- a/board/boards/black.h
+++ b/board/boards/black.h
@@ -185,7 +185,6 @@ const board board_black = {
   .read_current = unused_read_current,
   .set_fan_enabled = unused_set_fan_enabled,
   .set_ir_power = unused_set_ir_power,
-  .set_phone_power = unused_set_phone_power,
   .set_siren = unused_set_siren,
   .read_som_gpio = unused_read_som_gpio
 };
diff --git a/board/boards/board_declarations.h b/board/boards/board_declarations.h
index 000fbaf8e0..f0cb30290b 100644
--- a/board/boards/board_declarations.h
+++ b/board/boards/board_declarations.h
@@ -15,7 +15,6 @@ typedef bool (*board_check_ignition)(void);
 typedef uint32_t (*board_read_current)(void);
 typedef void (*board_set_ir_power)(uint8_t percentage);
 typedef void (*board_set_fan_enabled)(bool enabled);
-typedef void (*board_set_phone_power)(bool enabled);
 typedef void (*board_set_siren)(bool enabled);
 typedef void (*board_set_bootkick)(BootState state);
 typedef bool (*board_read_som_gpio)(void);
@@ -42,7 +41,6 @@ struct board {
   board_read_current read_current;
   board_set_ir_power set_ir_power;
   board_set_fan_enabled set_fan_enabled;
-  board_set_phone_power set_phone_power;
   board_set_siren set_siren;
   board_set_bootkick set_bootkick;
   board_read_som_gpio read_som_gpio;
diff --git a/board/boards/dos.h b/board/boards/dos.h
index b0a9736770..1a7bc878e5 100644
--- a/board/boards/dos.h
+++ b/board/boards/dos.h
@@ -217,7 +217,6 @@ const board board_dos = {
   .read_current = unused_read_current,
   .set_fan_enabled = dos_set_fan_enabled,
   .set_ir_power = dos_set_ir_power,
-  .set_phone_power = unused_set_phone_power,
   .set_siren = dos_set_siren,
   .set_bootkick = dos_set_bootkick,
   .read_som_gpio = dos_read_som_gpio
diff --git a/board/boards/grey.h b/board/boards/grey.h
index 82d9788a36..4e13b51cb0 100644
--- a/board/boards/grey.h
+++ b/board/boards/grey.h
@@ -27,7 +27,6 @@ const board board_grey = {
   .read_current = white_read_current,
   .set_fan_enabled = unused_set_fan_enabled,
   .set_ir_power = unused_set_ir_power,
-  .set_phone_power = unused_set_phone_power,
   .set_siren = unused_set_siren,
   .read_som_gpio = unused_read_som_gpio
 };
diff --git a/board/boards/pedal.h b/board/boards/pedal.h
index 5af2fa07bb..bdc4de1568 100644
--- a/board/boards/pedal.h
+++ b/board/boards/pedal.h
@@ -89,7 +89,6 @@ const board board_pedal = {
   .read_current = unused_read_current,
   .set_fan_enabled = unused_set_fan_enabled,
   .set_ir_power = unused_set_ir_power,
-  .set_phone_power = unused_set_phone_power,
   .set_siren = unused_set_siren,
   .read_som_gpio = unused_read_som_gpio
 };
diff --git a/board/boards/red.h b/board/boards/red.h
index 1eb590c9ac..c618c48ad4 100644
--- a/board/boards/red.h
+++ b/board/boards/red.h
@@ -193,7 +193,6 @@ const board board_red = {
   .read_current = unused_read_current,
   .set_fan_enabled = unused_set_fan_enabled,
   .set_ir_power = unused_set_ir_power,
-  .set_phone_power = unused_set_phone_power,
   .set_siren = unused_set_siren,
   .read_som_gpio = unused_read_som_gpio
 };
diff --git a/board/boards/red_v2.h b/board/boards/red_v2.h
index 3103d0617f..2fa18835af 100644
--- a/board/boards/red_v2.h
+++ b/board/boards/red_v2.h
@@ -33,7 +33,6 @@ const board board_red_v2 = {
   .read_current = unused_read_current,
   .set_fan_enabled = unused_set_fan_enabled,
   .set_ir_power = unused_set_ir_power,
-  .set_phone_power = unused_set_phone_power,
   .set_siren = unused_set_siren,
   .read_som_gpio = unused_read_som_gpio
 };
diff --git a/board/boards/tres.h b/board/boards/tres.h
index 7082d1b393..599516e232 100644
--- a/board/boards/tres.h
+++ b/board/boards/tres.h
@@ -92,7 +92,6 @@ const board board_tres = {
   .read_current = unused_read_current,
   .set_fan_enabled = tres_set_fan_enabled,
   .set_ir_power = tres_set_ir_power,
-  .set_phone_power = unused_set_phone_power,
   .set_siren = fake_siren_set,
   .set_bootkick = tres_set_bootkick,
   .read_som_gpio = tres_read_som_gpio
diff --git a/board/boards/uno.h b/board/boards/uno.h
index 3ca294f93e..d03782cc06 100644
--- a/board/boards/uno.h
+++ b/board/boards/uno.h
@@ -58,10 +58,6 @@ void uno_set_bootkick(BootState state) {
   }
 }
 
-void uno_set_phone_power(bool enabled){
-  set_gpio_output(GPIOB, 4, enabled);
-}
-
 void uno_set_can_mode(uint8_t mode) {
   uno_enable_can_transceiver(2U, false);
   uno_enable_can_transceiver(4U, false);
@@ -141,7 +137,7 @@ void uno_init(void) {
   set_gpio_alternate(GPIOC, 8, GPIO_AF2_TIM3);
 
   // Turn on phone regulator
-  uno_set_phone_power(true);
+  set_gpio_output(GPIOB, 4, true);
 
   // Initialize IR PWM and set to 0%
   set_gpio_alternate(GPIOB, 7, GPIO_AF2_TIM4);
@@ -224,7 +220,6 @@ const board board_uno = {
   .read_current = unused_read_current,
   .set_fan_enabled = uno_set_fan_enabled,
   .set_ir_power = uno_set_ir_power,
-  .set_phone_power = uno_set_phone_power,
   .set_siren = unused_set_siren,
   .set_bootkick = uno_set_bootkick,
   .read_som_gpio = unused_read_som_gpio
diff --git a/board/boards/unused_funcs.h b/board/boards/unused_funcs.h
index edc83e3e05..7bfde01391 100644
--- a/board/boards/unused_funcs.h
+++ b/board/boards/unused_funcs.h
@@ -9,10 +9,6 @@ void unused_set_fan_enabled(bool enabled) {
   UNUSED(enabled);
 }
 
-void unused_set_phone_power(bool enabled) {
-  UNUSED(enabled);
-}
-
 void unused_set_siren(bool enabled) {
   UNUSED(enabled);
 }
diff --git a/board/boards/white.h b/board/boards/white.h
index 2d6a6a5093..39bad3e760 100644
--- a/board/boards/white.h
+++ b/board/boards/white.h
@@ -244,7 +244,6 @@ const board board_white = {
   .read_current = white_read_current,
   .set_fan_enabled = unused_set_fan_enabled,
   .set_ir_power = unused_set_ir_power,
-  .set_phone_power = unused_set_phone_power,
   .set_siren = unused_set_siren,
   .read_som_gpio = unused_read_som_gpio
 };
diff --git a/board/main_comms.h b/board/main_comms.h
index 438839c9fe..df698fb113 100644
--- a/board/main_comms.h
+++ b/board/main_comms.h
@@ -152,10 +152,6 @@ int comms_control_handler(ControlPacket_t *req, uint8_t *resp) {
       resp[1] = ((fan_state.rpm & 0xFF00U) >> 8U);
       resp_len = 2;
       break;
-    // **** 0xb3: set phone power
-    case 0xb3:
-      current_board->set_phone_power(req->param1 > 0U);
-      break;
     // **** 0xc0: reset communications
     case 0xc0:
       comms_can_reset();
diff --git a/python/__init__.py b/python/__init__.py
index b8e1111c3d..274e7dbe4d 100644
--- a/python/__init__.py
+++ b/python/__init__.py
@@ -920,10 +920,6 @@ def get_fan_rpm(self):
     a = struct.unpack("H", dat)
     return a[0]
 
-  # ****************** Phone *****************
-  def set_phone_power(self, enabled):
-    self._handle.controlWrite(Panda.REQUEST_OUT, 0xb3, int(enabled), 0, b'')
-
   # ****************** Siren *****************
   def set_siren(self, enabled):
     self._handle.controlWrite(Panda.REQUEST_OUT, 0xf6, int(enabled), 0, b'')