diff --git a/lib/mobile/main.asm b/lib/mobile/main.asm
index 9eed76137..35738ea0e 100644
--- a/lib/mobile/main.asm
+++ b/lib/mobile/main.asm
@@ -77,11 +77,11 @@ Function110030::
 ; clear [$c835].
 	push de
 	ld a, [$c988]
-	cp 2 * 6
+	cp $0c
 	jr z, .noreset
-	cp 2 * 7
+	cp $0e
 	jr z, .noreset
-	cp 2 * 8
+	cp $10
 	jr z, .noreset
 	xor a
 	ld [$c835], a
@@ -4134,7 +4134,7 @@ Function111b3c:
 	ld hl, Function111e28
 	push hl
 	cp $ee
-	jp z, Function111e2b
+	jp z, MobileSDK_GetErrorCode
 	ld a, [wMobileSDK_SendCommandID]
 	cp $ff
 	jp z, Function111ef8
@@ -4546,7 +4546,8 @@ Function111e15:
 Function111e28:
 	jp Function110029
 
-Function111e2b:
+MobileSDK_GetErrorCode:
+; Converts an error packet into a BCD error code
 	ld a, [wMobileSDK_SendCommandID]
 	cp $ff
 	jp z, Function111ef8
@@ -4571,54 +4572,59 @@ Function111e2b:
 	ld a, [hli]
 	ld [$c80e], a
 	cp $10
-	jr z, .asm_111e88
+	jr z, .adapter_not_plugged_in
 	cp $12
-	jr z, .asm_111e8c
+	jr z, .dial_telephone
 	cp $13
-	jr z, .asm_111ea1
+	jr z, .hang_up_logout
 	cp $15
-	jr z, .asm_111eae
+	jr z, .transfer_data
 	cp $19
-	jr z, .asm_111edc
+	jr z, .read_configuration_data
 	cp $21
-	jr z, .asm_111ee0
+	jr z, .isp_login
 	cp $22
-	jr z, .asm_111ea1
+	jr z, .hang_up_logout
 	cp $23
-	jr z, .asm_111ee4
+	jr z, .open_tcp_connection
 	cp $24
-	jr z, .asm_111eed
+	jr z, .close_tcp_connection
 	cp $28
-	jr z, .asm_111ee9
+	jr z, .dns_query
 	ld a, [hl]
-.asm_111e84
+
+.store_error_code
 	ld [$c80f], a
 	ret
-.asm_111e88
+
+.adapter_not_plugged_in
 	ld a, $10
-	jr .asm_111e84
-.asm_111e8c
+	jr .store_error_code
+
+.dial_telephone
 	ld a, [hl]
 	or $0
 	jr z, .asm_111e9d
 	cp $2
 	jr z, .asm_111e99
 	ld a, $13
-	jr .asm_111e84
+	jr .store_error_code
 .asm_111e99
 	ld a, $17
-	jr .asm_111e84
+	jr .store_error_code
 .asm_111e9d
 	ld a, $12
-	jr .asm_111e84
-.asm_111ea1
+	jr .store_error_code
+
+.hang_up_logout
 	ld hl, $c821
 	res 1, [hl]
 	res 4, [hl]
 	ld a, $2
 	ld [$c807], a
 	ret
-.asm_111eae
+
+.transfer_data
 	ld a, [hl]
 	cp $1
 	jr nz, .asm_111ed3
@@ -4641,20 +4647,25 @@ Function111e2b:
 	ld hl, $c822
 	res 5, [hl]
 	ld a, $24
-	jr .asm_111e84
-.asm_111edc
+	jr .store_error_code
+
+.read_configuration_data
 	ld a, $14
-	jr .asm_111e84
-.asm_111ee0
+	jr .store_error_code
+
+.isp_login
 	ld a, $22
-	jr .asm_111e84
-.asm_111ee4
+	jr .store_error_code
+
+.open_tcp_connection
 	ld hl, $c821
 	res 1, [hl]
-.asm_111ee9
+
+.dns_query
 	ld a, $24
-	jr .asm_111e84
-.asm_111eed
+	jr .store_error_code
+
+.close_tcp_connection
 	ld hl, $c821
 	res 1, [hl]
 	ld a, $3
diff --git a/mobile/mobile_40.asm b/mobile/mobile_40.asm
index 724c2c80e..c5d37a104 100644
--- a/mobile/mobile_40.asm
+++ b/mobile/mobile_40.asm
@@ -59,8 +59,8 @@ SetRAMStateForMobile:
 	ld bc, $65
 	call ByteFill
 	xor a
-	ld hl, wMobileErrorCodeBuffer
-	ld bc, $100
+	ld hl, wMobileWRAM
+	ld bc, wMobileWRAMEnd - wMobileWRAM
 	call ByteFill
 	ldh a, [rIE]
 	ld [wBGMapBuffer], a
diff --git a/mobile/mobile_5f.asm b/mobile/mobile_5f.asm
index 5d563b29b..d4a7fcd62 100644
--- a/mobile/mobile_5f.asm
+++ b/mobile/mobile_5f.asm
@@ -4793,7 +4793,7 @@ MobileErrorCodes_23: db 1
 	dw $000, MobileErrorCode_23_000_Text
 
 MobileErrorCodes_24: db 1
-	dw $000, MobileErrorCode_LineBusyText
+	dw $000, MobileErrorCode_ServerConnectionFailedText
 
 MobileErrorCodes_25: db 1
 	dw $000, MobileErrorCode_25_000_Text
@@ -4803,11 +4803,11 @@ MobileErrorCodes_26: db 1
 
 MobileErrorCodes_30: db 17
 	dw $000, MobileErrorCode_CommuncationErrorText
-	dw $221, MobileErrorCode_LineBusyText
-	dw $421, MobileErrorCode_LineBusyText
+	dw $221, MobileErrorCode_ServerConnectionFailedText
+	dw $421, MobileErrorCode_ServerConnectionFailedText
 	dw $450, MobileErrorCode_30_450_Text
-	dw $451, MobileErrorCode_LineBusyText
-	dw $452, MobileErrorCode_LineBusyText
+	dw $451, MobileErrorCode_ServerConnectionFailedText
+	dw $452, MobileErrorCode_ServerConnectionFailedText
 	dw $500, MobileErrorCode_CommuncationErrorText
 	dw $501, MobileErrorCode_CommuncationErrorText
 	dw $502, MobileErrorCode_CommuncationErrorText
@@ -4815,17 +4815,17 @@ MobileErrorCodes_30: db 17
 	dw $504, MobileErrorCode_CommuncationErrorText
 	dw $550, MobileErrorCode_30_550_Text
 	dw $551, MobileErrorCode_30_551_Text
-	dw $552, MobileErrorCode_LineBusyText
+	dw $552, MobileErrorCode_ServerConnectionFailedText
 	dw $553, MobileErrorCode_30_553_Text
-	dw $554, MobileErrorCode_LineBusyText
-	dw -1, MobileErrorCode_LineBusyText
+	dw $554, MobileErrorCode_ServerConnectionFailedText
+	dw -1, MobileErrorCode_ServerConnectionFailedText
 
 MobileErrorCodes_31: db 5
 	dw $000, MobileErrorCode_CommuncationErrorText
 	dw $002, MobileErrorCode_31_002_Text
 	dw $003, MobileErrorCode_31_003_Text
 	dw $004, MobileErrorCode_CommuncationErrorText
-	dw -1, MobileErrorCode_LineBusyText
+	dw -1, MobileErrorCode_ServerConnectionFailedText
 
 MobileErrorCodes_32: db 17
 	dw $000, MobileErrorCode_CommuncationErrorText
@@ -5058,7 +5058,7 @@ MobileErrorCode_33_299_Text:
 	next "せつめいしょを　ごらんください"
 	db   "@"
 
-MobileErrorCode_LineBusyText:
+MobileErrorCode_ServerConnectionFailedText:
 ; The telephone line is busy. Due to this error, the Mobile Center cannot communicate.
 ; Please wait for a little while and call again.
 	db   "でんわかいせんが　こんでいるか"
diff --git a/wram.asm b/wram.asm
index e32f0fbcd..b3b69b0d9 100644
--- a/wram.asm
+++ b/wram.asm
@@ -237,6 +237,7 @@ wc300::
 
 NEXTU ; c300
 ; mobile data
+wMobileWRAM::
 wMobileErrorCodeBuffer:: ds 3 ; c300
 wc303:: ds 2
 wc305:: ds 1
@@ -299,8 +300,8 @@ wc3f9:: ds 1
 wc3fa:: ds 1
 wc3fb:: ds 1
 wc3fc:: ds 1
-
 	ds 3
+wMobileWRAMEnd::
 
 
 SECTION "Sprites", WRAM0