- Navigate to HKEY_LOCAL_MACHINE\SYSTEM\GDI\GLYPHCACHE\
- Change the value of 'limit' from 8192 to 16384… or even to 32768 for a faster setting but eats up more memory

- HKLM\System\StorageManager\FATFS
- Change the CacheSize key from 0 to 8192
- Make sure EnableCache is set to 1

- HKEY_LOCAL_MACHINE\System\StorageManager\Filters\f sreplxfilt\ReplStoreCacheSize=0x1000(4096)

[HKEY_LOCAL_MACHINE\Comm\AsyncMac1\Parms]
Default value type and value are
“DisablePowerManagement”=dword:1
Change to
“DisablePowerManagement”=dword:0

[HKEY_LOCAL_MACHINE\Comm\Irsir1\Parms]
Default value type and value are
“DisablePowerManagement”=dword:1
Change to
“DisablePowerManagement”=dword:0

[HKEY_LOCAL_MACHINE\Comm\PPTP1\Parms]
Default value type and value are
“DisablePowerManagement”=dword:1
Change to
“DisablePowerManagement”=dword:0

[HKEY_LOCAL_MACHINE\Comm\L2TP1\Parms]
Default value type and value are
“DisablePowerManagement”=dword:1
Change to
“DisablePowerManagement”=dword:0

- HKLM\SOFTWARE\Microsoft\Inbox 
- create a new key "Settings" 
- create a new string value "SMSNoSentMsg" and set the value to 1

These are found in HKEY_CURRENT_USER>Software>Microsoft>Today>Keys

112 is the left "soft key"
Default = the text in the button
Open = Program it opens (if you just put a program name, like Calendar.exe it will automatically look in the Windows directory for the program)

to set the right key you will need to create the key 113 and then set its values.

go into the phone app. hit menu the options then turn the key tones off

HKEY_LOCAL_MACHINE\Software\HTC\PHONE\
PhoneExtendSetting <<-- YOU WILL HAVE TO ADD THIS KEY

ADD the dword EndCallTime and make the value 1000 (one second) or 0 (no delay)

Those of you running Sprint ROMs should remove the following registry value:

[HKEY_LOCAL_MACHINE\Comm\InternetSharing]
"Extension"="rilphone.dll"

[HKEY_CURRENT_USER\ControlPanel\Phone]
"Sleep"

Change the value from 1 to 0 to disable allowing phone to go to sleep mode durring calls.

HKEY_CURRENT_USER\ControlPanel\Sip\

Now go to DragStyle and change (0) to (1)

HKEY_LOCAL_MACHINE\Software\OEM\MASD

 and remove the quickdialer entry

HKLM/Software/HTC/SUPLAGPS/
GPSMode --> Change to 4 (orginal value 2)

[HKEY_LOCAL_MACHINE\Software\HTC\ATDbgLog]
"Enable"=dword:00000000
"LogMode"=dword:00000000

2) Navigate to \\\registry\HKLM\SOFTWARE\OEM\PhoneSetting\
3) Change the value of 'HiddenModeOperationPage' from 1 to 0
4) Save
5) Soft reset

It didn't seem to want to remember the value of 0 for me the first couple times, and I'm not sure why.

What this does:

-Adds an item to the list at 'Phone - Menu - Options - Services (Tab on bottom)' that is named "Mode of Operation". The default value of this is Hybrid, which will prefer EVDO, but will use 1X when not available. I seem to get better reception at home if I change the option to 1X Only.

;For Sprint Bars use
HKEY_CURRENT_USER\ControlPanel\PhoneExtendFunction \CDMA\
SignalStrengthLevel=dword:00000007

;For Alltel Bars change value from 7 to 4

HKLM\SOFTWARE\HTC\AudioManager\Config
device_scan_path_type_0
set to 0
device_scan_path_path_0
set to "\Storage Card\Music"
device_scan_path_path
delete this

Under HKLM\Software\OEM\PhoneSetting
Change AllowRoaming to 0 (not sure if this is needed or not)

Under HKLM\Software\OEM\PhoneSetting\NetworkService
Change ItemCount to 3 (instead of 2)
Create a new String called ItemName3 with the value of "Roam Only" (without quotes)
Create a new DWord called ItemValue3 with a value of 3
----------------
Make same changes under: HKEY_LOCAL_MACHINE\SOFTWARE\OEM\InitProv\PhoneSetting

"[HKEY_LOCAL_MACHINE\Comm\ConnMgr\Providers\{7C4B7A3 8-5FF7-4bc1-80F6-5DA7870BB1AA}\Connections\Phone as Modem]
"Enabled"=dword:00000000"

HKLM\System\Inbox\Settings

add “PropertyPath” value=”\Storage Card\Mail” datatype=”string”

add “AttachPath” with value “\Storage Card\Mail\Attachments” without quotas.