It appears that I have gotten my MMS working on my Sprint TP2 with Juicy R1 (Sense UI). The reason why people are not getting positive results when installing the Arcsoft app is that the Arcsoft app uses the native WM SMS application to process SMS/MMS. In this version of manila (LEO) HTC has put in some registry values that completely hides the stock messaging app.
Here are the steps I took to get it working. I am not sure if this will work for the other carriers or the other versions of LEO roms that are floating around so YMMV. Give it a shot and report your results:
Step 1: Install Arcsoft App
Install the Arcsoft MMS for Sprint: Arcsoft MMS_Sprint_5_0_94_128c
Found in this thread:
http://forum.ppcgeeks.com/showthread.php?t=93625
Install this to your main memory. You wont beable to find the app listed in your programs tab so don't bother looking for it yet. You must make it visible first. Just move on to Step 2
Step 2: Make the native WM messaging app visible and Change MMS settings:
Since the native WM messaging app has been “hidden” by HTC, The only whay to make it visible is through a linked email account. You will need to link an email account to your TP2 to make the native Messaging options “Visible”. Once you have your email account linked, go into your “inbox” screen and select:
Menu>Pics/Video Options…
You are now in the Arcsoft MMS application. Change the Server settings for your specific carrier.
Step 3: Make the native SMS/MMS application the default again:
In previous versions of Manila, the WM messaging app was always the "primary" messaging app with the HTC manila app being the secondary. In the LEO version, the HTC is the primary. So this must be changed to allow MMS to flow into the WM messaging where the Arcsoft app is located. This step will require a registry edit:
You will need to change the default text messaging app from HTC messaging to WM Pocket outlook (tmail.exe) by renaming the account found in the string:
HKLM\system\inbox\externalaccounts.
Rename the key "SMS" to "SMS.htc"
Soft Reset. (props to Zenkinz over at XDA for finding this key!)
Step 4. Verify the changes.
Once your phone boots back up, go into your start menu and select the “email” icon. This should take you into the “Select an Account” view of the native WM messaging app. “SMS/MMS” should now be visible as a selection. Select the SMS/MMS account and click: Menu>New>Picture Message This should take you in to the Arcsoft MMS app where you can send and receive MMS’s as usual!
Next test is to go into your “Photos & Videos” tab, select a picture and bring it up full screen. Tap the photo once to bring up the picture toolbar. Next select the “upload” icon (Third icon from the left) and select “mail”. This should bring you to the WM “Select an Account” view. “Picture Message(SMS/MMS)” and “Video Message(SMS/MMS)” should be visible and selectable! If you can do all of this then Your Done!
A few things to note:
Clicking on the text message in Manila will still send you to HTC’s messaging app. The picture attachment does not show in this app. You will need to view the picture mail in the WM messaging app to view the picture.
Normal SMS should be visible in both views, but clicking on the text message in Manila will still send you to HTC’s messaging app. You can get to the WM app by selecting “all messages” while inside of the HTC messaging app NOT the “all messages” on TF3D. This one will just send you to the all messages view in the HTC messaging app. Maybe we can get someone to edit the manila file that controls this.
Hope this helps…give it a try and post your feedback. Remeber to give "Thanks" If this helped you!