4900 ## codes

Thanks for the codes

 

How do you use the codes....I know you type them in, but then what? Do I hit any other buttons? Thanks alot.

 

What is the benefit of these codes? Why use them?

 

A little vocoder info for Sprint phones:

EVRC- Default...more efficient. Newer vocoder introduced to save bandwith over the airwaves.
13K- Higher quality (13K bandwith vs. EVRC at 8k), but makes the "s" sound staticy...you'll see what i mean if you try it.

Under both menus, there are RC1, 3, 4, etc. On EVRC, RC3 gives most efficient battery life because it is designed for areas with fewer users on the tower. RC4 can get you better results if you are in the middle of a big city, but it cuts down battery life because it basically opens more channels to place/receive calls. I don't know what the others do. I have my phone set on EVRC, RC3 because it is acceptable voice quality and good battery life.

Note that the phone cannot order these vocoder settings, but only set preferences. Sprint can, but usually does not, override these settings based on network conditions anytime.

 

Sanyo 4900 1.056SP

I tried switching to the 13K vocoder to see if it had better voice quality and had some difficulties with vision when using the 13K vocoder with the RC5 setting.

On the RC5 setting, I would get Error #2048 "Network Busy. Please Try Again." when trying to log on, and yes, I clicked retry MANY times. And yes, I tried going to settings - Internet - Sign out, and then sign back in, but no help. I tried power cycling the phone, with no effect either. I simply could not log on to vision at all.

Then on the RC2 setting (for 13K vococder, only RC2 and RC5 are options), I had no problems (yet).


So, my question is, is this a common or normal problem, ie vision logon doesn't work with 13k vocoder on RC5 setting?

Also, if I use 13K on RC2, will I experience more network busy messages than with EVRC using RC3 or RC4??? Any additional info on what the RC setting actually does or the specifics of the 13K and EVRC vocoders would be appreciated as well (sprint and sanyo don't exactly publish this info in the quick start guide )



As a side note, I seemed to notice slight vision performance increase (using phone browser) on 13K vocoder, RC2 setting. But, this is purely subjective with no quantitative analysis, so it could just be a perception.

 

It's possible that Sprint doesn't really support RC5. I really didn't think the vocoder has anything to do with the data side of things, but I know anything's possible. I really don't have much knowledge intot the technical side of the vocoder, but I guess if it does affect the data channel then more Vision data could come through 13K. I am very suspicious of my own suspected theory here because again I believe the vocoder only does things for the voice side.

Any Sprint tech reps that can help?

 

The RC settings appear to have something to do with data transfer under cdma2000 support.

Radio Configuration 1 - Required
â?¢ Backwards compatible mode with TIA/EIA-95-B
â?¢ Based on 9,600 bps Traffic
Radio Configuration 2
â?¢ Backwards compatible mode with TIA/EIA-95-B
â?¢ Based on 14,400 bps Traffic
Radio Configurations 3, 4, and 5
â?¢ All use new IS-2000 coding for improved capacity
â?¢ RC3 is based on 9,600 bps and goes up to 153,600 bps
â?¢ RC4 is based on 9,600 bps and goes up to 307,200 bps
â?¢ RC5 is based on 14,400 bps and goes up to 230,400 bps

I assume they would come into play with Vision support, but given the low power of the phone processors I don't imagine you would see much difference in performance no matter how high the transfer rates. Probably would make a difference when used in conjunciton with a laptop.

Does anyone know if there is any truth to the assertion made earlier that RC4 should have fewer dropped calls than RC3?

BTW, anyone who knows more about this should correct me. I do not want to be a source of disinformation.

 

Hi. I tried the life time/data/status code that was posted and it worked. One thing I noticed is that there is one field called Recondit: and mine says YES. Does this mean my phone was re-conditioned, as in re-furbished? Or does everyone's say that. On a different screen, there is a field Preowned: and mine says YES there too. I ask because I got my phone at a Sprint Store and had to pay for it. It would be a bit annoying to say the least to find out they sold me a used phone as new.

thanks

 

my 4900 said

Recondit: No
Preown: No


Sounds like your fears may be right... sorry to hear it.

 

If you paid the same price for your phone as you would for a new 4900, then you have a bone to pick. Nobody can sell you a refurbished product without you knowing it. It should have had a conspicuous label on the box and/or you should have been alerted to it. I would go back to them if you weren't notified verbally or with a label and either complain for a new phone or for service credit (if your phone works, I'd take option 2).

Refurbs aren't inherently bad things because you get peace of mind knowing that, unlike some new phones, somebody physically checked a used phone very carefully to make sure it met the specs of a new phone before allowing it to be sold as a refurb.

 

mine it says "No recond"
so it is fine

 

Any more info?

 

If you paid the same price for your phone as you would for a new 4900, then you have a bone to pick. Nobody can sell you a refurbished product without you knowing it. It should have had a conspicuous label on the box and/or you should have been alerted to it. I would go back to them if you weren't notified verbally or with a label and either complain for a new phone or for service credit (if your phone works, I'd take option 2).

Refurbs aren't inherently bad things because you get peace of mind knowing that, unlike some new phones, somebody physically checked a used phone very carefully to make sure it met the specs of a new phone before allowing it to be sold as a refurb.[/quote]

Hi. thanks for the replies. Sorry for being slow to respond.
I'm not really quite sure what to do as I am miffed they didn't tell me that it wasn't new, but yet the phone works just fine. What kind of credit can I ask for? Do you mean how much I paid for the phone? What if they deny that it's refurbished? I don't know what to tell them.. uh.. I was messing around with these codes I found on a forum...

On another note, I've heard that before about refurbs being better tested. But then again, you never know. With sprint, their new phones get 1 year warranty, and refurbs get 6 mos.

tnt