Database Users

no 3g icon or internet on my nexus s

hello everyone, my nexus s 4g is flashed to boost, i been using it for 3 months without problems but in the last 2 weeks the internet was working too slow and i did a hard reset to the phone with the dial code (*#*#786#*#*)
after the hard reset the phone didn't have service because the msid and phone # changed, i went into cdma workshop and restore the msid and phone # and the phone was working again, i can make and receive calls and send and receive texts
but now my problem is that the phone don't show the 3g icon and doesn't connect to internet
i will appreciate if somebody can help me get the 3g working again
thanks

This may sound stupid, but s mobile data enabled in settings -> wireless & network settings -> mobile networks ?
If it is, then have you tried enabling airplane mode and then disabling it? There are times when my NxS drops 3G connection for no apparent reason and this is one way I can get it back.
I saw this posted in the radio guide as way to "retrieve 3G data connection"
Code:
1. Go to Dialer. Dial *#*#4636#*#*
2. Go to Phone information. Choose the preferred network to
"GSM Auto PRL" or "CDMA Auto PRL" or whatever you have.
3. Scroll down, deactivate and activate Phone Radio.
4. Press Menu button.
5. Select Phone frequency, then choose your country.
6. In the previous menu push the Home button to go back to Homescreen.
7. Reboot.
(By Brainmaster)
Click to expand...
Click to collapse

Cant access Netwok Settings

Model: P8
Country: UK
Network Vodafone
When I click on "mobile Networks" button, the screen freezes/goes slightly dark for a second and then just returns back to the same menu,
I tried downloading a couple of apps which take you directly to the network settings menu but they react the same way, freeze/go slightly dark for a second and then back to the main screen.
I'm only trying to enable the roaming, so if there are any other ways to just enable the roaming that would be great
Tried:
Resetting phone
it is up to date and not rooted
Removing sim card and wiping
resetting phone again
checking with vodafone that roaming is allowed on my plan

Did you manage to solve this?
Were the resets you tried hard/factory resets?
If still not solved, here's something simple to try (bit of a long shot)...
I notice the same roaming settings on the P8 are available from two 'different' menu settings:
1. Settings > Data traffic management > Mobile network settings
2. Settings > More > Mobile network
If the above is no good, have you tried posting in the Vodafone forums?

Sprint Users, I need some help

Anyone here using this phone in the US on Sprint?
I was poking around in some settings, flashed a new kernel, and now my phone only boots into 3G mode
Looking for the following info from someone on sprint:
*#*#4636#*#* > Phone Info:
Set Preferred Network Type: ????
Settings > Wireless & Networks (More) > Cellular Networks >
Screenshot please?
I'm trying to find what I broke.
Thanks!

Karlinski said:
Anyone here using this phone in the US on Sprint?
I was poking around in some settings, flashed a new kernel, and now my phone only boots into 3G mode
Looking for the following info from someone on sprint:
*#*#4636#*#* > Phone Info:
Set Preferred Network Type: ????
Settings > Wireless & Networks (More) > Cellular Networks >
Screenshot please?
I'm trying to find what I broke.
Thanks!
Click to expand...
Click to collapse
dialer code is either ##72786# or #*#*72786#*#* network should be lte

Yes. So, I am only seeing 1x and 3g. The global and LTE/WHATEVER options are good from my settings. I have to do the dialer code that I entered in the op, and change that setting in there to get LTE again.

Resolved the issue. Had to reset my phone and start from scratch.
I was unable to get it into global mode, so, the restart was the only way

Network 4G/3G setting and preferred network type in *#*#4636#*#*

My Mi A1 has complete wrong 4G/3G setting.
When I go to Settings -> Network&Internet -> Mobile network -> Preferred network type
The default is 4G, and I go to phone and dial *#*#4636#*#* -> Phone information, and found the value of drop down menu is "TD-SCDMA/CDMA/UMTS".
If I set Mobile network->Preferred network type to 3G, and do the same dialing *#*#4636#*#* -> Phone information, and I fount the value is now "LTE/TD-SCDMA/WCDMA"...
What the......?
Does your phone have the same problem like mine?

Yeah I have the same setting but it's already on LTE and by switching it, I lose my LTE! I guess the options are wrong rest everything is internally okay

taiwan#1 said:
My Mi A1 has complete wrong 4G/3G setting.
When I go to Settings -> Network&Internet -> Mobile network -> Preferred network type
The default is 4G, and I go to phone and dial *#*#4636#*#* -> Phone information, and found the value of drop down menu is "TD-SCDMA/CDMA/UMTS".
If I set Mobile network->Preferred network type to 3G, and do the same dialing *#*#4636#*#* -> Phone information, and I fount the value is now "LTE/TD-SCDMA/WCDMA"...
What the......?
Does your phone have the same problem like mine?
Click to expand...
Click to collapse
My OP5 & Essential both use TD-SCDMA/CDMA/UMTS as the default value in the #4636# menu and I use a GSM carrier (T-Mobile). I don't think the value is wrong. Both of those phones default to the 4G LTE signal with that setting in #4636#. That's also the specific setting T-Mobile tech support told me to use to get the best signal.

Network trouble with A9 Pro (a910f) Either making calls or using 4g

Hello Xda community
i recently bought a9 pro a910f international version from Aliexpress
the first thing i did is updating the software via ota from originally nogut to
also nogut but apparently a small update.
My problem is i can get only 4g/lte but i cant make or receive any calls ???
if i switched from network mode to GSM Only i could make calls but i lose internet.7
i have Lycamobile sim card , i live in Belgium
do you think its fault in software , i already flashed and downgraded and upgraded through
odin and using original firmware without any luck
i think its band issue maybe a9 pro is not compatible with my service provider
but i am not expert there

Help please

Sir you can download other firnware that works on you country and flash via ODIN is easy or just flash other modem but need more instructions

Thank you very much for your reply
I tried 3 original firmwares so far but no use.
You said something about modem ?
I have no idea about that ? Is it not already in the firmware ?

I flashed 2 firmwares: Malaysia and India using 4 files method with odin.
But with no use.
I will try to flash all other regions .
But i think it could be hardware fault?

To make or receive calls on 4G, at least one of these have to be working:
CSFB (circuit switched fall back) from 4G, where CS is not available, to 3G or 2G;
VoLTE/IMS (voice over LTE,4G);
VoIP software...
Below: 4G=LTE, 3G=UMTS/WCDMA, 2G=GSM. Those are 3 RATs, selecting only one is sometimes "RAT lock".
4636 can usually be opened without root.
Set network to 4G/3G/2G in the settings app, not 4G(LTE) only.
Set network to LTE/UMTS auto (PRL) in 4636, should also CS to 2G.
Set network to LTE/WCDMA in 4636. (4G/3G).
Check CSC features for anything related to this, remove or modify if rooted.
Check current CSC, install, open stock recovery.
Install CSC with VoLTE (IMS 'APN') set up for the mobile network operator, if available.
Disable VoLTE provisioned in 4636 if it's not available?
CS could be disabled in the menu, probably not, (*#2683662#, etc) Example, in this example CS is disabled, leaving only PS (data). (Exynos! Likely differs on Snapdragon) UE Setting and Information > Setting > Protocol > NAS > CEMODE Setting > [3]CEMODE0(PSonly/DC)(*), UE Setting and Information > Setting > Protocol > NAS > Network Control > SERVICE DOMAIN > [3] PS ONLY. Edit: it works on GSM.
Ask the mobile virtual network operator about "circuit switched fall back", have the question elevated to the ones higher in position.
Etc.

Bryan48765 said:
To make or receive calls on 4G, at least one of these have to be working:
CSFB (circuit switched fall back) from 4G, where CS is not available, to 3G or 2G;
VoLTE/IMS (voice over LTE,4G);
VoIP software...
Below: 4G=LTE, 3G=UMTS/WCDMA, 2G=GSM. Those are 3 RATs, selecting only one is sometimes "RAT lock".
4636 can usually be opened without root.
Set network to 4G/3G/2G in the settings app, not 4G(LTE) only.
Set network to LTE/UMTS auto (PRL) in 4636, should also CS to 2G.
Set network to LTE/WCDMA in 4636. (4G/3G).
Check CSC features for anything related to this, remove or modify if rooted.
Check current CSC, install, open stock recovery.
Install CSC with VoLTE (IMS 'APN') set up for the mobile network operator, if available.
Disable VoLTE provisioned in 4636 if it's not available?
CS could be disabled in the menu, probably not, (*#2683662#, etc) Example, in this example CS is disabled, leaving only PS (data). (Exynos! Likely differs on Snapdragon) UE Setting and Information > Setting > Protocol > NAS > CEMODE Setting > [3]CEMODE0(PSonly/DC)(*), UE Setting and Information > Setting > Protocol > NAS > Network Control > SERVICE DOMAIN > [3] PS ONLY. Edit: it works on GSM.
Ask the mobile virtual network operator about "circuit switched fall back", have the question elevated to the ones higher in position.
Etc.
Click to expand...
Click to collapse
i am completely lost
what is 4636 ? how can i open it ?
what should i google
you seem quite knowledgeable about this
can you point me to what should i google about please ?

mhd1st said:
i am completely lost
what is 4636 ? how can i open it ?
what should i google
you seem quite knowledgeable about this
can you point me to what should i google about please ?
Click to expand...
Click to collapse
4636 is basically a menu that comes with Android that allows the selection of network modes for SIM 1, including those that are not available in the usual settings. It has a few other features, but it's not relevant to this. On Samsung (Gingerbread, etc) , it was previously launched by *#*#4636*#*# in the phone app, like other devices. In the network mode "LTE only"/"4G only", calls by circuit switched fall back aren't available (can't automatically switch to 3G or 2G). If it's not changeable in the usual settings, look for it there.
How to open it? Well, there are many apps that open 4636, both with, and without root. Not necessarily the menu before it "Testing".
What to Google... anything above?

thank you for your efforts trying to help me
i tried those but still not working
Set network to 4G/3G/2G in the settings app, not 4G(LTE) only.
Set network to LTE/UMTS auto (PRL) in 4636, should also CS to 2G.
Set network to LTE/WCDMA in 4636. (4G/3G).
the first picture is before i try to calling to my phone from another phone
the second picture is after i call the phone from another phone

how to : Check current CSC, install, open stock recovery ?