Database Info

A possible (temporary) fix to 3G toggle...

Saw this on the AT&T forums, not sure if it works though.
Originally Posted by BecomingxInsane
I found out that if you go into the dialer and type in *#*#197328640#*#* that it will take you into a menu that will allow you to change it. From the main menu of the ServiceMode screen, select DEBUG SCREEN, then PHONE CONTROL at the bottom, then UE STATE CONTROL. From there select CHANGE RAT TO WCDMA to enable 3G only, and select CHANGE RAT TO GSM for 2G only.

this doesnt do anything at all .
i live in an area with no 3g coverage.. despite att sending me emails stating its be "coming" since last summer. anyways...
I set the phone to 3g only mode and I still get signal

Thunderbolt not connecting to 3G in non-LTE 4G areas?

After doing a manual root, the Thunderbolt connects to LTE fine but when there is no LTE, the 3G won't connect and the phone doesn't receive data.
Advice?

Try checking to make sure you are not in LTE only mode. Dial *#*#4636#*#*, select phone information, scroll down and go down and make sure you are on the CDMA + LTE/EvDo auto option and not LTE mode.
If that doesn't work, try downloading "reset connections" from the android market and running that app when you enter a 3g area out of 4g range. It may be a handoff issue from 4g to 3g towers.

##778# hit dial, edit mode, password is 000000, modem settings, Rev. A, change to enabled, instead of eHRPD, hit menu, commit changes.
try 3G again.
I assume like me, you are in a section where Verizon's Hybrid Network isn't working, and so you must tell your phone to revert back to their regular 3G network.

We have 4G in Pittsburgh, but there's a spot in Squirrel Hill that I go through on the bus in the morning where I drop to 1x, and I'm fairly certain that there is 3G there. However, there are other areas I've definitely seen 3G. So, it seems a little mixed. We're definitely early adopters of this new network

The fix
Phone ##778, edit mode, 000000, modem parms, REV-A change from ePHRD to enabled, menu, commit, reboot, problem fixed.

seems to have worked for me. I was having a problem with syncing too, hopefully this fixes that as well. Thank you!

madman34 said:
Phone ##778, edit mode, 000000, modem parms, REV-A change from ePHRD to enabled, menu, commit, reboot, problem fixed.
Click to expand...
Click to collapse
Not to familiar with TB verizon, but friend bought his TB and I saw there was 4GLTE on it, and now nothing, no icon not in wireless networks, nada!
What is this "fix" for?

lock your infuse to cdma

Dial *#*#4636#*#* go into phone information scroll down and choose wcdma only and your done default is GSM/WCDMA auto (PRL)

samsungcaptivates said:
Dial *#*#4636#*#* go into phone information scroll down and choose wcdma only and your done default is GSM/WCDMA auto (PRL)
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Click to collapse
please excuse my ignorance, but what would be the purpose of this?

so that it dosent jump around from 3g 2g if its auto and your not using data it automatically defaults to 2g i think to save battery then switches to 3g oir hsdpa 3.5g or what att calls 4g on demand this keeps it locked on wcdma or 4g to my knowledge

samsungcaptivates said:
so that it dosent jump around from 3g 2g if its auto and your not using data it automatically defaults to 2g i think to save battery then switches to 3g oir hsdpa 3.5g or what att calls 4g on demand this keeps it locked on wcdma or 4g to my knowledge
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Click to collapse
seems like it reverts back to auto after a reboot

This makes the phone work on Verizon, right?

MikeyMike01 said:
This makes the phone work on Verizon, right?
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Click to collapse
See that's what I thought too. ATT = GSM, Verizon/Sprint = CDMA.

kwaalude said:
seems like it reverts back to auto after a reboot
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Click to collapse
Mine goes back to auto as soon as I back out of the menu. Am I doing something wrong by using the back button?

wouldn't this, by locking it, render the phone useless when traveling out of area that support that network?

MikeyMike01 said:
This makes the phone work on Verizon, right?
Click to expand...
Click to collapse
roflmao 10char

vbanh said:
Mine goes back to auto as soon as I back out of the menu. Am I doing something wrong by using the back button?
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Mine does the same thing. did you figure out how to do it? I have been trying but I couldn't do it

I found this here in the forum someone posted and it worked for me thanks for him.
champoux said:
Here's an alternate method I puzzled out (and then afterward discovered it was already posted in thread 751237. It's a bit faster and has the advantage of surviving flight mode; still gets reset upon restart.
Dial *#*#2263#*#* (mnemonic: *#*#BAND#*#*).
This brings up the Band selection menu which you can also access from the above method by dialing *#*#197328640#*#* then going into DEBUG SCREEN > PHONE CONTROL > NETWORK CONTROL.
Select [3] GSM BAND
Select [1] GSM ALL
Select "Select GSM All Bands"
Menu key > END
To switch back, go to *#*#2263#*#* and select [1] AUTOMATIC > Select GSM &WCDMA All Bands > Menu key > END.
Something else I'm trying out is switching the acquisition order so when it is in "dual" mode, it'll try GSM first. Even so, it will still switch to 3g if there's enough signal. Seems to help keep it on 2G though, when it would otherwise cling to a faint 3g signal with 0-1 bars.
To do that, go into the NETWORK CONTROL menu (see above) then
Select [4] AQUISITION ORDER (yes they misspelled it)
Select [2] GSM->UMTS
Select "Select ACQ_ORDER_GSM_FIRST" (at least they abbreviated it correctly)
Menu key > END
This option does not get reset upon phone restart.
Click to expand...
Click to collapse

I did this and now my sms or text messaging don't work help

I had this happen too, but I didn't use the above method. Don't know what happened, but when I checked message settings, I had no number under "Message Center" did a quick google search and found an ATT number "+13123149810"...now it works again.

Did u call the number

Never mind i fixed it.but now in my network type it says umts is that faster then hsdpa and are there any other number sequences i can use to tweak my phone

I'm getting RAT restricted, which I got on my Vibrant but never my Captivate...
How can I change to show the different bands?
Sent from my Samsung Infuse 4G

wcdma and cdma have nothing to do with each other. wcdma is also known as umts, the base part of 3g (and 4g when hspa+). hspa is a protocol that runs on top of this cell technology providing higher data speeds. gprs (known as edge, and some times called gsm) is 2g. you can turn one or another off so the phone does not seek and connect to both services, which could save battery life. even though ive yet to see my phone find less than 3g/4g in houston, i still dont turn it off, just in case.

The Jack of Clubs said:
wcdma and cdma have nothing to do with each other. wcdma is also known as umts, the base part of 3g (and 4g when hspa+). hspa is a protocol that runs on top of this cell technology providing higher data speeds. gprs (known as edge, and some times called gsm) is 2g. you can turn one or another off so the phone does not seek and connect to both services, which could save battery life. even though ive yet to see my phone find less than 3g/4g in houston, i still dont turn it off, just in case.
Click to expand...
Click to collapse
Thanks, John Madden.

[Q] WanHu ROM 2G/3G switching?

So I finally jumped in and got the WanHu ROM installed with M's v5 patch. This thing is really nice now, hopefully it will stay that way even after I reinstall some of my apps.
One thing that I've noticed is that the ability to use only 2G networks is gone. It used to be an option under Settings » Wireless controls » Mobile networks. Any chance that may be coming back?
I know some people would probably think I'm crazy to be asking that, but in my experience the batter life was pretty much double that of what I was getting on 3G, so I'd use that mode sometimes.
Thanks for all the good work on the WanHu ROM.

You can turn off the 3g at Settings >> Wireless networks >> Data Network settings & there is also a 3g widget.

Hi,
At this point you only turn data on or off. You cannot switch from 3g to 2g.
I would like to have this feature to, because the radio at my work is very poor and the battery last much longer in 2g.
Sent from my XT720 using XDA App

switch 2g , 3g, and 2g/3g
if i have to change the default network setting (3, which mean 3g/2g auto), i can from here:
1. from the dialpad dial *#*#4636#*#*
2. from the popued menu, choose Phone Information
3. from "Set preffered network type" You can choose several options including:
"GSM auto (PRL)" (this is usually default and means 3g and failback to 2g, depending on signal
"WCDMA prefered" (this mean 3g and if there is no 3g, then 2g), this settings seems to wotk, but if you exit and return to the same menu it is changed
"WCDMA only" 3g only
"GMS only" 2g only
hope that helps.
p.s. I use Battery monitor application, which has shortcut to the Phone Information menu.

peshovec said:
if i have to change the default network setting (3, which mean 3g/2g auto), i can from here:
1. from the dialpad dial *#*#4636#*#*
2. from the popued menu, choose Phone Information
3. from "Set preffered network type" You can choose several options including:
"GSM auto (PRL)" (this is usually default and means 3g and failback to 2g, depending on signal
"WCDMA prefered" (this mean 3g and if there is no 3g, then 2g), this settings seems to wotk, but if you exit and return to the same menu it is changed
"WCDMA only" 3g only
"GMS only" 2g only
hope that helps.
p.s. I use Battery monitor application, which has shortcut to the Phone Information menu.
Click to expand...
Click to collapse
Thanks for the reply. I was messing around in those menus and could not find a "GSM only" mode on my phone. I will look again, but all I remember were an "auto" mode, a "3g only" mode, and a bunch of CDMA stuff (which doesn't apply to our phones).
But I will look again and try out the battery monitor application program as that would be nicer than typing the key sequence everytime.
And just to expand my (rather small) knowledge of the android OS. The option to select only 2G under Settings » Wireless controls » Mobile networks, is that a framework thing that has to be added?
-J

[Q] Manual 3G Network switch problem

What I am trying to do is have ONLY 3G connection manually, to do this i added a tile in notification bar for 2G to 2G/3G switch, so when i select 2G|3G mode it connects to 3G but after some time it automatically selects 2G (because its 2G|3G, either strong one i guess).
I have also tried selected 3G in network settings, selecting LTE(recommended) also doesn't work.
But I want to be it in 3G mode exclusively even though 2G signal is better.
I have a rooted OPO and can install xposed too, any solution for this will be really helpful !!

Hi
Think you can do this by "dailing" the string *#*#4636#*#* in the dialer app, to bring up the Testing menu. Press "Phone information", then scroll down to "Set prefered network type", there is an option for "WCDMA only".

dazadaza said:
Hi
Think you can do this by "dailing" the string *#*#4636#*#* in the dialer app, to bring up the Testing menu. Press "Phone information", then scroll down to "Set prefered network type", there is an option for "WCDMA only".
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Click to collapse
Perfect.. that exactly what i was looking for !! Thanks..!!