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[HOWTO]Change to EVRC-B(Improve voice quality)

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By southern87, Senior Member on 31st July 2011, 04:56 PM
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This is my first how to here so I know it will sucks but oh well lol.

I saw someone post on general forums about voice quality. For what reason this isn't set to default i don't know.

What this does is enables and changes your Voice codec(unless its called something else) to EVRC-B.

Requirements: Need your MSL #

To get your MSL # you can either call sprint and play dumb(I say i need to reprogram my phone) or since we have root download MSL Reader off the market.

Step 1: Once you have the MSL # go to you dial pad and press ##3282#.
Step 2: You will get a window that says EPST, hit the Edit Mode. This will prompt you for your password. Type in your MSL number there and hit OK.
Step 3: Now your are in the EPST, Go to the Advanced menu.
Step 4: Scroll down till you see Vocoder. Enable this if it not by pressing on it and slecting enable.
Step 5: Below Vocoder is the EVRC-B, do the same thing if it is not enabled.
Step 6:Next setting is the Home Orig and Roam Orig. You want to change these to EVRC-B.
Step 7: Press your menu button, Commit Modifications will appear. Press it to save the changes. This will automatically reboot your phone.

Once it is back up, people should notice a better call quality from you.




Written pretty ****ty huh? lol
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31st July 2011, 05:11 PM |#2  
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I've heard not all of the towers use all of the codecs.. but I'd think that wouldn't be a problem unless roaming or in rural areas.

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ranger61878
31st July 2011, 05:36 PM |#3  
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This has been posted for weeks...just sayin.
31st July 2011, 07:44 PM |#4  
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Already in the stickied FAQ at the top of this forum. You should request this be deleted.
31st July 2011, 10:13 PM |#5  
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Dont mind all the other ignorants thanks for your help youve helped me thanks again


Quote:
Originally Posted by southern87

This is my first how to here so I know it will sucks but oh well lol.

I saw someone post on general forums about voice quality. For what reason this isn't set to default i don't know.

What this does is enables and changes your Voice codec(unless its called something else) to EVRC-B.

Requirements: Need your MSL #

To get your MSL # you can either call sprint and play dumb(I say i need to reprogram my phone) or since we have root download MSL Reader off the market.

Step 1: Once you have the MSL # go to you dial pad and press ##3282#.
Step 2: You will get a window that says EPST, hit the Edit Mode. This will prompt you for your password. Type in your MSL number there and hit OK.
Step 3: Now your are in the EPST, Go to the Advanced menu.
Step 4: Scroll down till you see Vocoder. Enable this if it not by pressing on it and slecting enable.
Step 5: Below Vocoder is the EVRC-B, do the same thing if it is not enabled.
Step 6:Next setting is the Home Orig and Roam Orig. You want to change these to EVRC-B.
Step 7: Press your menu button, Commit Modifications will appear. Press it to save the changes. This will automatically reboot your phone.

Once it is back up, people should notice a better call quality from you.




Written pretty ****ty huh? lol

7th August 2011, 06:07 AM |#6  
polarized's Avatar
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EDIT: I got it to work
Last edited by polarized; 7th August 2011 at 06:21 AM. Reason: error
7th August 2011, 09:55 AM |#7  
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I did this on my EVO 4G... I don't think it made any difference whatsoever.
7th August 2011, 12:07 PM |#8  
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Tried this on Synergy's latest nightly. It didn't automatically reboot the phone, but I lost signal completely. I'm manually rebooting now, I'm praying that it works properly.

What are the default values, in case I need to change it back?
7th August 2011, 12:23 PM |#9  
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Have tried this before and completely lost signal. YMMV.

I am trying to figure out the completely unnecessary use of profanity at the end of your post though. Try to have some class when posting in a forum read by all age groups. Read the Forum Rules regarding use of language which may be offensive to others.
7th August 2011, 12:26 PM |#10  
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I ended up booting just fine, got my signal back as well. I guess Synergy just wasn't interested in getting rebooted :P

I'll see if it works, it's about 4 in the morning for me, so I can't really call anyone.
7th August 2011, 01:02 PM |#11  
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Quote:
Originally Posted by LiquidSolstice

Tried this on Synergy's latest nightly. It didn't automatically reboot the phone, but I lost signal completely. I'm manually rebooting now, I'm praying that it works properly.

What are the default values, in case I need to change it back?

Default Settings:
Quote:

Step 5: Below Vocoder is the EVRC, do the same thing if it is not enabled.
Step 6:Next setting is the Home Orig and Roam Orig. You want to change these to EVRC.

http://forum.xda-developers.com/show....php?t=1140578

Quote:

Improve CDMA Call Sound Quality via a Codec Change.

A few instances of this Codec change have popped up on XDA, PPCG, and even androidforums. For this reason, I'm unable to give credit to the original source. I have gathered as much data into one place around the subject. There are a few important things to note. This adjustment changes the Codec used to compress the voices of you and your caller across the Cell Network using EVRC-B which is an updated revision to the current CDMA standard EVRC. It has been noted in a few places, that making this change CAN effect your ability to make outbound calls in some roaming situations, including over Network extenders like the AirRave. As always, YMMV and I STRONGLY recommend that you both test this change in your normal use environments as well as keep a general idea of these instructions handy in the event you need to revert to the default settings in an emergency. As always, YOU and YOU ALONE are FULLY responsible for changes to any handset in which these and any modifications are made.

1. With MSL in hand, go to the Phone app and dial ##3282#
2. Click Edit Mode
3. Your "Password" is your Phone's MSL, enter it here.
4. Click Advanced
5. Scroll down the list and note the entries for EVRC-B, Home Orig, and Roam Orig.
6. Change EVRC-B to "Enable"
7. Change Home Orig and Roam Orig to "EVRC-B"
8. Hit Menu, and select "Commit Modifications"
9. Your phone will prompt you to click ok to restart or it will restart automatically.


To reverse the changes, repeat all of the above steps except change the following.
6. Change EVRC-B to "Disable"
7. Change Home Orig and Roam Orig to "EVRC"

Click to learn more about EVRC and EVRC-B

If you have an Airave... this is no good. EVRC-B = No connection.

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