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Old May 18th, 2010, 03:43 PM   #1 (permalink)
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Default Improve your Call Quality

Original post was by EJHART at ##Droidincredible over on freenode.net .

I claim NO credit for this. Just letting you all know.
I can confirm it made a huge different for me.
  1. Go to Phone and Dial ##778
  2. Choose Edit Mode
  3. Password is 000000
  4. Go to CDMA Settings
  5. Scroll all the way to bottom
  6. Change Home Page, Home Orig, and Roam Orig from EVRC to EVRC-B
  7. Hit Menu and Commit Changes

Phone reboots and walla no more muffed voice calls!

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Old May 18th, 2010, 04:03 PM   #2 (permalink)
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Thanks for bringing it over!!!
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Old May 18th, 2010, 04:07 PM   #3 (permalink)
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Trying it out now.
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Old May 18th, 2010, 04:08 PM   #4 (permalink)
 
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tried this out.. what does "EVRC-B" even mean?

will post results
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Old May 18th, 2010, 04:12 PM   #5 (permalink)
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Quote:
Originally Posted by lobug View Post
tried this out.. what does "EVRC-B" even mean?

will post results
Enhanced Variable Rate Codec B - Wikipedia, the free encyclopedia
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Old May 18th, 2010, 04:15 PM   #6 (permalink)
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Quote:
Originally Posted by lobug View Post
tried this out.. what does "EVRC-B" even mean?

Its just an additional low bandwidth bitrate (1/4 rate @ 2kbit/s) audio codec not originally available in EVRC:

Enhanced Variable Rate Codec B - Wikipedia, the free encyclopedia


For a comparison, Vonage bitrates are:

Low quality audio = 30kbit/s
Med quality audio = 60kbit/s
High quality audio = 90kbit/s

It will basically allow for an additional level of call quality for respective signal strength...fills a void so to speak.
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Old May 18th, 2010, 04:26 PM   #7 (permalink)
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##778 seems to do nothing on my phone.
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Old May 18th, 2010, 04:29 PM   #8 (permalink)
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Are you tapping CALL after entering it?
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Old May 18th, 2010, 04:35 PM   #9 (permalink)
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Quote:
Originally Posted by mrchambo View Post
Are you tapping CALL after entering it?
Yes. Wonder if it has something to do with call confirm.
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Old May 18th, 2010, 06:11 PM   #10 (permalink)
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Originally Posted by Twiz View Post
Yes. Wonder if it has something to do with call confirm.

It does. I had to remove call confirm to access the menu, then it worked fine.

Although I didn't perform the "fix" above - just wanted to view the menu...
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Old May 18th, 2010, 09:02 PM   #11 (permalink)
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Originally Posted by teufeltexan View Post
It does. I had to remove call confirm to access the menu, then it worked fine.

Although I didn't perform the "fix" above - just wanted to view the menu...
Disabled call confirm and it worked. Performed the fix and it seems like its a bit better. Still not happy with the weak service i have at my house.
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Old May 18th, 2010, 09:14 PM   #12 (permalink)
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Be warned if you are in or end up in an area that doesn't support it, you may have some issues...
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Old May 18th, 2010, 09:18 PM   #13 (permalink)
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Quote:
Originally Posted by Twiz View Post
Disabled call confirm and it worked. Performed the fix and it seems like its a bit better. Still not happy with the weak service i have at my house.
I'm curious..what is you average signal strength at your house? Not the bars, the actual strength in dBm (menu-settings-about phone-network). If your dBm is -90 or higher on a regular basis, then this might help: Cell Phone Antennas and Cell Phone Boosters at Wilson Electronics
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Old May 18th, 2010, 09:26 PM   #14 (permalink)
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Sweet find, thanks for bringing it over. I will have to give this a shot and report back
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Old May 18th, 2010, 09:40 PM   #15 (permalink)
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seemed to help a bit; will make alot of calls tomorrow, and see what people think..
lots of complaints up to this point about voice quality when I call other mobile phones..

thanks for the tip!
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Old May 18th, 2010, 11:56 PM   #16 (permalink)
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A little skeptical about this... Does it drain battery faster or hurt service in certain areas or incur additional charges? Why wouldn't verizon have this enabled?
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Old May 19th, 2010, 12:12 AM   #17 (permalink)
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i just did this trick, testing it tomorrow
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Old May 19th, 2010, 12:30 AM   #18 (permalink)
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I'm curious about this.
Will have to try it tomorrow.
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Old May 19th, 2010, 08:15 AM   #19 (permalink)
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Quote:
Originally Posted by disciplined View Post
A little skeptical about this... Does it drain battery faster or hurt service in certain areas or incur additional charges? Why wouldn't verizon have this enabled?

It only adds the 1/4 rate codec, set at 2kbit/s, to the existing Full, half, and 1/8 rate codecs. Given that the "Full rate" is 8kbit/s, its not really an improvement, so much as you get to use the 1/4 rate instead of the 1/8 rate, in a marginal signal area. In that instance, it would be an improvement. It may smooth things out as the radio may not have to struggle to get the signal from 1/8 to 1/2 rate, and can just settle in the middle at the 1/4 rate.
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Old May 19th, 2010, 08:22 AM   #20 (permalink)
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Originally Posted by disciplined View Post
A little skeptical about this... Does it drain battery faster or hurt service in certain areas or incur additional charges? Why wouldn't verizon have this enabled?
I assume they didn't enable this out of the box because it isn't a standard yet. Probably to pass FCC they had to force revision A out of the box.
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Old May 19th, 2010, 09:21 AM   #21 (permalink)
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just did it.. .the jury is still out ...we will see..
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Old May 19th, 2010, 10:17 AM   #22 (permalink)
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Quote:
Originally Posted by CaptJager View Post
Original post was by EJHART at ##Droidincredible over on freenode.net .

I claim NO credit for this. Just letting you all know.
I can confirm it made a huge different for me.
  1. Go to Phone and Dial ##778
  2. Choose Edit Mode
  3. Password is 000000
  4. Go to CDMA Settings
  5. Scroll all the way to bottom
  6. Change Home Page, Home Orig, and Roam Orig from EVRC to EVRC-B
  7. Hit Menu and Commit Changes
Phone reboots and walla no more muffed voice calls!
Found this mod elsewhere on the forum yesterday and did it.. Seems to have made a dramatic improvement to my INC call quality...
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Old May 19th, 2010, 12:22 PM   #23 (permalink)
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Quote:
Originally Posted by albiewan View Post
I'm curious..what is you average signal strength at your house? Not the bars, the actual strength in dBm (menu-settings-about phone-network). If your dBm is -90 or higher on a regular basis, then this might help: Cell Phone Antennas and Cell Phone Boosters at Wilson Electronics

-85 to -92 usually. Texting and such is fine. The call quality isnt that good, but then again i have a land line for calls. My daughter has the verizon network booster cause she lost calls all the time but now has great service.
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Old May 19th, 2010, 12:42 PM   #24 (permalink)
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Quote:
Originally Posted by DonDraper View Post
Be warned if you are in or end up in an area that doesn't support it, you may have some issues...
Can anyone explain or confirm this?

I would like to do this but hate changing system settings that make things worse in the long-run.

I also don't notice too poor of a signal but hate knowing that it COULD be better!
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Old May 19th, 2010, 01:56 PM   #25 (permalink)
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I only really have issues talking to people who are using MetroPCS and Boost Mobile phones, other than that I'm fine. I did this last night and just got off the phone with my MetroPCS friend and the call really did sound much better. Now I'm really close to a tower at the moment so that could have been it too. I'll talk to her when I'm at home tonight and not that close to the tower and see how things sound.
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Old May 19th, 2010, 03:09 PM   #26 (permalink)
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Talking Do You Have Poor Muffled/Underwater Sounding Call Quality? SOLUTION INSIDE!!!!

After a few weeks of suffering through very poor muffled underwater sounding conversations over my Inc I found a solution that really works!

Do the following:

1. Go to phone and Dial ##778
2. Choose Edit Mode
3. Password is 000000
4. Go to CDMA Settings
5. Scroll to bottom
6. Change all three of these "Home Page" "Home Orig" "Roam Orig" from EVRC to EVRC-B
7. Hit Menu and Commit Changes

Phone will reboot and your done!


EVRC-B is a superior voice codec which yields substantially better voice quality. More info - Enhanced Variable Rate Codec B - Wikipedia, the free encyclopedia



ENJOY!


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Old May 19th, 2010, 03:14 PM   #27 (permalink)
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Quote:
Originally Posted by DavidinGA View Post
After a few weeks of suffering through very poor muffled underwater sounding conversations over my Inc I found a solution that really works!

Do the following:

1. Go to phone and Dial ##778
2. Choose Edit Mode
3. Password is 000000
4. Go to CDMA Settings
5. Scroll to bottom
6. Change all three of these "Home Page" "Home Orig" "Roam Orig" from EVRC to EVRC-B
7. Hit Menu and Commit Changes

Phone will reboot and your done!


EVRC-B is a superior voice codec which yields substantially better voice quality. More info - Enhanced Variable Rate Codec B - Wikipedia, the free encyclopedia



ENJOY!

Interesting, there must be some reason they choose EVRC by default. Anybody else try this? I don't want to do this unless others verify there's no downside.
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Old May 19th, 2010, 03:16 PM   #28 (permalink)
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Quote:
Originally Posted by DavidinGA View Post
...EVRC-B is a superior voice codec which yields substantially better voice quality. More info - Enhanced Variable Rate Codec B - Wikipedia, the free encyclopedia



ENJOY!

How is it superior when it only adds the 2kbit/s codec to EVRC's already existing 8kbit/s, 4kbit/s, and 0.8kbit/s rates?
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Old May 19th, 2010, 03:18 PM   #29 (permalink)
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Quote:
Originally Posted by colnago View Post
How is it superior when it only adds the 2kbit/s codec to EVRC's already existing 8kbit/s, 4kbit/s, and 0.8kbit/s rates?
So in other words in low signal areas it may not as sound as bad since it can drop to 2kbit/s instead of all the way down to 0.8kbit/s.
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Old May 19th, 2010, 03:19 PM   #30 (permalink)
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My sound quality is perfect on my Incredible. Not sure what problem you are referring to...
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Old May 19th, 2010, 03:19 PM   #31 (permalink)
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Quote:
Originally Posted by mobilehavoc View Post
Interesting, there must be some reason they choose EVRC by default. Anybody else try this? I don't want to do this unless others verify there's no downside.
EVRC is more widely available than the newer EVRC-B and so it was shipped in EVRC mode to avoid any issues with the few who might not have EVRC-B coverage in there area. If you should find that you do not have EVRC-B in your area; after you make the switch you will get a recorded message when you attempt to place a call. If that turns out to be the case for you all you have to do is go back into the menu and change it back to EVRC. The odds of you not having EVRC-B are extremely slim I would think though...
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Old May 19th, 2010, 03:23 PM   #32 (permalink)
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I read this in another forum. Some said they get much better quality after they switched while others didn't. I think if you're suffering from poor call quality, it's worth a try. If it doesn't work you can always switch back
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Old May 19th, 2010, 03:24 PM   #33 (permalink)
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Quote:
Originally Posted by mobilehavoc View Post
So in other words in low signal areas it may not as sound as bad since it can drop to 2kbit/s instead of all the way down to 0.8kbit/s.

Right, that is how I understand it, but to say that 0.8 is "substantially" better is a bit of a stretch, especially given that it only occurs at certain scenarios. 8kbit/s is stretching it as it is.
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Old May 19th, 2010, 03:25 PM   #34 (permalink)
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Quote:
Originally Posted by dylo22 View Post
I read this in another forum. Some said they get much better quality after they switched while others didn't. I think if you're suffering from poor call quality, it's worth a try. If it doesn't work you can always switch back

Fair enough, but did they experience better audio quality when stationary, in a marginal signal area?
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Old May 19th, 2010, 03:26 PM   #35 (permalink)
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I live on the canadian border and do not have EVRC-B
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Old May 19th, 2010, 03:29 PM   #36 (permalink)
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Quote:
Originally Posted by mobilehavoc View Post
Interesting, there must be some reason they choose EVRC by default. Anybody else try this? I don't want to do this unless others verify there's no downside.

I'm not A pro or anything but I do have a good memory. The reason it's not defaulted is because it swills the battery. I read it a few times. they say it drinks the battery pretty bad. Maybe their exaggerating but thats the scoop. Verizon picks it to save on juice.
Maybe it's not as bad of a ratio as they say (better quality for not that much battery sacrafice???)
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Old May 19th, 2010, 03:31 PM   #37 (permalink)
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I agree with colnago. There isn't a logical reason for this helping unless you're in a marginal area.

If you want higher quality voice, wouldn't the proper thing to do be to try disabling EVRC and going to 13k only?
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Old May 19th, 2010, 03:32 PM   #38 (permalink)
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Quote:
Originally Posted by colnago View Post
Fair enough, but did they experience better audio quality when stationary, in a marginal signal area?
I have no idea. I have not tried this myself, but here's the link to that forum.
Improve your Call Quality - HUGE DIFFERENCE!
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Old May 19th, 2010, 03:33 PM   #39 (permalink)
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If this really was better it would be defaulted IMO.
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Old May 19th, 2010, 03:42 PM   #40 (permalink)
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Quote:
Originally Posted by jayno20 View Post
If this really was better it would be defaulted IMO.
Except that some people would not be able to get their phones to work out of the box and it would be a media $hit storm for VZW and HTC...
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Old May 19th, 2010, 03:48 PM   #41 (permalink)
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Quote:
Originally Posted by Haelous View Post
I agree with colnago. There isn't a logical reason for this helping unless you're in a marginal area.

If you want higher quality voice, wouldn't the proper thing to do be to try disabling EVRC and going to 13k only?
"I think" it would help with battery "if in a marginal area" as it could settle down on the 2kbit rate "if possible", instead of fighting between the 1/8th and 1/2 rates. I'm basing this purely on my personal experience with the Droid, and the VZ dead zone which is my mom's house. My fully charged battery almost completely drained within 4hrs, in a spot where it struggled to keep 1 bar...phone was also very warm, but normally good for 24hrs under my normal useage.

Agreed that 13k would "sound better", but apparently 13k comes with less robust QoS features...and apperently is not available on the Inc.? Hoping someone with more knowledge can shed some more light on the issue. My antenna mod for my Droid provided substantial gains to dBm values...wondering how audio quality is rated for people with low dBm levels. I'd guessing it would vary since people's perceptions will vary widely. Especially when (2) different people with say -95dBm could have different experiences:

CDMA vs TDMA (section on "In building coverage")
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Old May 19th, 2010, 03:52 PM   #42 (permalink)
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I have no idea. I have not tried this myself, but here's the link to that forum.
Improve your Call Quality - HUGE DIFFERENCE!

Roger that.

This change has been around for a while, but results have never really been consistent...at least not from what I gathered from the Moto Droid forum. As always, is probably greatly dependant on where you dwell, and the quality of your connection.
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Old May 19th, 2010, 03:53 PM   #43 (permalink)
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Another benefit that I have seen myself is that in EVRC-B I don't drop calls like I used to.
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Old May 19th, 2010, 04:17 PM   #44 (permalink)
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Question about all this and I'm curious.

When I first got my phone, if you go to Menu>Settings>About Phone>Network. My phone used to say just CDMA. For the past few weeks (it may have been since Verizon fixed my Voice Mail problem). It states CDMA-EvDo rev. A.

Is this normal? Should my phone be this way? I've not changed any settings at all.

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Old May 19th, 2010, 04:29 PM   #45 (permalink)
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Ive tried this and it hasnt helped. If there was a difference, its unnoticeable.

I know plenty of you have said you have no issues with call quality, but there are those that do.

My call quality isnt consistently bad, but during a conversation with someone, the sound I hear will go to a muffled sound periodically, though usually not constant.
I dont understand this. Ive got another Verizon phone, a basic one I use for work, and I dont have these issues at all. Ive come over to Verizon from ATT, didnt have that issue with them either. I dont think its Verizon's problem, but its the phone's problem.

I absolutely love this phone. But two big issues so far do erk me a bit. Battery, and the inconsistent call quality. I really do hope its something that can be addressed with a simple software update. I want to keep this phone.
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Old May 19th, 2010, 04:30 PM   #46 (permalink)
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Is there any benefit to NOT doing this modification?
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Old May 19th, 2010, 04:38 PM   #47 (permalink)
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Is there any benefit to NOT doing this modification?
My concern would be coverage. Even if I were able to have this modification work here at home, there are apparently other locations where my phone would not work. I go cycling often out in the boonies. If I forget how to switch things back I'd be without a functioning phone.
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Old May 19th, 2010, 04:41 PM   #48 (permalink)
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...I absolutely love this phone. But two big issues so far do erk me a bit. Battery, and the inconsistent call quality. I really do hope its something that can be addressed with a simple software update. I want to keep this phone.
Problem is, you may still suffer from a "crowded tower" at any given time. I also came from AT&T, using various Motorola phones, and my first call on VZ was to voice mail, with the Moto Droid, with a marginal signal. Audio quality was pretty bad, worse than the voice mail server I manage, prior to switching it from G.729 to G.711. Subsequent calls did sound better however, but my issue was that there were several spots in my town, where I would completely lose signal.

FWIW, there are 4-5 Verizon outlets within 5miles in any direction in my town (DC/Balt corridor...VZ 3G map is solid red?). Initial reports here seemed to confirm that the Incredible had lower dBm levels than the Droid, when in the same location. I saw this in both stores down the street from my house.

Personally, based on what people are reporting here, I just think the phone may not be the greatest when dealing with a weak signal, or at least a weak signal that doesn't have a clear line of sight.
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Old May 19th, 2010, 05:13 PM   #49 (permalink)
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This did not do the trick for me. Bottom line is that HTC needs to continue working on a fix and release ASAP. I sure hope its not something thats going to take months. I love this phone. Coming over from Windows Mobile/ATT, I am glad I switched. However, this is starting to put a damper on my enjoyment of the phone. It is just getting annoying trying to talk to someone when it goes in and out or gets muffled. The main purpose of a cell phone is to talk...for "some" people, and when there is quality issues there, well that should be unacceptable.
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Old May 19th, 2010, 05:18 PM   #50 (permalink)
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Originally Posted by Marlboro View Post
This did not do the trick for me. Bottom line is that HTC needs to continue working on a fix and release ASAP. I sure hope its not something thats going to take months. I love this phone. Coming over from Windows Mobile/ATT, I am glad I switched. However, this is starting to put a damper on my enjoyment of the phone. It is just getting annoying trying to talk to someone when it goes in and out or gets muffled. The main purpose of a cell phone is to talk...for "some" people, and when there is quality issues there, well that should be unacceptable.
Does this problem seem to be with everyone you talk to or just some? Does it always sound muffled no matter the location you call from?
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