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[Q] No 3G on Latest Miui

Hi all,
I'm new to the Nexus S 4G root scene. I just flashed Miui yesterday, and I am getting no 3G. I couldn't find anyone else that was having this issue.
Everything else works, and I get 1x data, but not 3G. It's not the location because stock gets me full 3G service in the same location.
I flashed this kernel: http://www.peteralfonso.com/2011/08/download-nexus-s-263514-kernel.html?spref=tw
but it didn't fix anything.
Thanks for your help
Edit: After going out with my phone, I realized I do in fact have 3G reception, but it's very poor and constantly switches between 3G and 1x. I normally have very good reception with stock Android in my area. It doesn't stay connected to 3G for more than a few seconds at a time and switches back and forth between 3G and 1x

Have you set up the phone to use 3G at all?
Go to Settings, and find Mobile Network settings, and there should be one box that says something like 2g only.
You probably know what to do from there on.

dario3040 said:
Have you set up the phone to use 3G at all?
Go to Settings, and find Mobile Network settings, and there should be one box that says something like 2g only.
You probably know what to do from there on.
Click to expand...
Click to collapse
Under "Mobile Network Settings" there is no option for that. Only "Data Enabled" which is turned to "on"

Mikooster said:
Under "Mobile Network Settings" there is no option for that. Only "Data Enabled" which is turned to "on"
Click to expand...
Click to collapse
It says: Network type selection.

dario3040 said:
It says: Network type selection.
Click to expand...
Click to collapse
Thanks for your help.
Maybe I'm just being dumb, but it's not there.
Settings > System > Mobile Network Settings
there are 4 choices:
Data Enabled (on), Always receive MMS (on), Data roaming (off), and System Select (automatic)

After going out with my phone, I realized I do in fact have 3G reception, but it's very poor and constantly switches between 3G and 1x. I normally have very good reception with stock Android in my area

How to Fix AT&T Data Throttle Your 4G - Your Data Usage is Among The Top 5% Of Users

How to Fix AT&T Data Throttle Your 4G - Your Data Usage is Among The Top 5% Of Users
There is a nice little APN fix. Just change the APN to Phone and force your phone to use HSPA in your phone's settings. I have instructions with a screenshot...
http://www.traemcneely.com/2011/12/...rottle-4g-data-anti-throttling-trick-for-att/

How do you perform the first step on the skyrocket?
1. Go to Settings > Wireless and Network > Mobile Networks > Click Network Mode and force your phone to use GSM/HSPA (Auto mode).
I don't see "network mode".

Click Access Point Name..
I am now getting 512k vs 150k.
Sent from my SAMSUNG-SGH-I727 using Tapatalk

Found another trick.
I named the access point the same ATT pta, then I put Phone under the APN setting.
Put your phone into GSM/HSPA (auto mode) let it connect to the network,
then go back and put it as HSPA only.....I'm getting 1-2g+ bypassing the throttle using HSPA+ works like a charm.

Att Throttle Samsung Skyrocket
i did all when i click on Mobile networks i see access point names and network operators and use packet data. When i click on network operators is says Default setup doesnt allow me to do anything. Please help

Same here. Don't see 'network.mode' selection. Please help. Does it have to be rooted?
Sent from my SAMSUNG-SGH-I727 using XDA App

I understand there are alot of threds pertaing to this throttling issue. I was given a warning text from att about a week ago now when ever i run my speed test i am only getting around 50kbs thats crazy. I live in pittsburgh which is not an LTE area yet am i screwed? or is there a work around for me????????

there is no network mode on a stock rom.. i posted workarounds on another thread which I started but can't find link now on my phone.. check my profile for my posts
Sent from my SAMSUNG-SGH-I727 using xda premium

*#*#4635#*#*

ajdrausal said:
*#*#4635#*#*
Click to expand...
Click to collapse
*#*#4636#*#*
---------- Post added at 11:36 PM ---------- Previous post was at 11:17 PM ----------
I am still not sure where/how to pick "GSM/HSPA (Auto mode)" on stock rom. Thats not an option.
What I have are:
WCDMA preferred - The GSM phone is capable of using both 2G and 3G data communication and when signal strength is low 3G is favored more.
GSM only - The GSM phone is capable of using only 2G data communication. When the 2G signal is too low you get nothing at all.
WCDMA only - The GSM phone is capable of using only 3G data communication. When the 3G signal is too low you get nothing at all.
GSM auto (PRL) - The GSM phone is capable of using both 2G and 3G data communication and when signal strength is low 2G is favored more. This one is a bit confusing to me since PRL is associated mostly with CDMA technology and not GSM technology.
CDMA auto (PRL) - The CDMA phone is capable of using both 2G and 3G data communication and when signal strength is low 2G is favored more.
CDMA only - The CDMA phone is capable of using only 2G data communication. When the 2G signal is too low you get nothing at all.
EvDo only - The CDMA phone is capable of using only 3G data communication. When the 3G signal is too low you get nothing at all.
GSM/CDMA auto (PRL) - Some phones are equipped with both GSM and CDMA capabilities. This setting appears to just have the phone attempt to stay connected to the data communication type that works the best. (Maybe the Samsung Galaxy S will take advantage of this???)
Unknown - If none of the above fit or the phone is acting weird as far as connecting to the carrier, you will see your preferred network type is set to this
(Cut n paste from another thread, dont know if these are applicable to Skyrocket/LTE)

http://forum.xda-developers.com/showthread.php?t=1342111

Thanks for the pointer to the thread but my whole point is that I dont see those options and for some reason my network mode changes dont stick.
So if I disable packet network, switch the APN, change the network mode and then enable the network again, I see that it has gone back to GSM?WCDMA/LTE auto mode again.
So for some reason my network mode changes dont stick. Also, I am on stock rom, could that be the reason!

activemind said:
Thanks for the pointer to the thread but my whole point is that I dont see those options and for some reason my network mode changes dont stick.
So if I disable packet network, switch the APN, change the network mode and then enable the network again, I see that it has gone back to GSM?WCDMA/LTE auto mode again.
So for some reason my network mode changes dont stick. Also, I am on stock rom, could that be the reason!
Click to expand...
Click to collapse
Custom ROMS give you the options you are looking for.

I am confused ! If the stock radio is *locked* to use LTE if available, why are some people reporting to lock onto HSPA+ network with stock ROM. Are they exploiting some bug?
I have tried various things but I cant switch my radio to anything except GSM/WCDMA/LTE auto mode. It seems to come back to that mode.
Do I need a reboot after changing the mode.
I am using *#*4636#*#* to switch the mode.

Switching APN 's worked like a charm ;o)

TE TOQUE said:
Switching APN 's worked like a charm ;o)
Click to expand...
Click to collapse
Over a year since last post and you decide to necro for no good reason smh.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2

[FIXED] - [Q] [JellyBean] How to switch on 4G?

I recently installed the JellyBean ROM for my A2 and changed few settings in the power manager after which I am unable to get 4G connectivity. I always see Edge in the status bar. I've tried re-trace my steps in the power manager but havent been able to turn on 4G yet.
Any guidance on how I could get my 4G back ?
----- UPDATE ----
I had to flash the same ROM again onto my phone and now its functioning properly. Still don't know the root cause but will report again if I see it happen again.
Thanks
Dhanvi

kapiladhanvi said:
I recently installed the JellyBean ROM for my A2 and changed few settings in the power manager after which I am unable to get 4G connectivity. I always see Edge in the status bar. I've tried re-trace my steps in the power manager but havent been able to turn on 4G yet.
Any guidance on how I could get my 4G back ?
Thanks
Dhanvi
Click to expand...
Click to collapse
Which JellyBean ROM? Please remember to be very specific as to the conditions surrounding the problem you're having!
I'd first try to go into Settings/ Below Data Usage tap 'More...'/ Mobile Networks
and make sure that 'Use only 2G networks' isn't checked.
Also, which carrier are you on? (I know most are on AT&T, but I'm on Straight Talk so I ask)

Alperon said:
Which JellyBean ROM? Please remember to be very specific as to the conditions surrounding the problem you're having!
I'd first try to go into Settings/ Below Data Usage tap 'More...'/ Mobile Networks
and make sure that 'Use only 2G networks' isn't checked.
Also, which carrier are you on? (I know most are on AT&T, but I'm on Straight Talk so I ask)
Click to expand...
Click to collapse
Thanks for your reply. I'm on the "MagicMod-Jellybean-Experimental" Atrix ROM on ATT.
The "Always use 2G" is unchecked which means that it should use 4G when available. Which bought me to the next section where I could search for network providers. When I searched for networks, most of the times my phone fails to find ATT in the list of available networks. I do have 4 bars on my phone though. I dont see the network provider name in the status bar so I dont know where it is connected currently.
My current hypothesis is that my phone is unable to connect/register to the ATT network and so I dont get 4G speeds.
Does that make sense?
Dhanvi

kapiladhanvi said:
Thanks for your reply. I'm on the "MagicMod-Jellybean-Experimental" Atrix ROM on ATT.
The "Always use 2G" is unchecked which means that it should use 4G when available. Which bought me to the next section where I could search for network providers. When I searched for networks, most of the times my phone fails to find ATT in the list of available networks. I do have 4 bars on my phone though. I dont see the network provider name in the status bar so I dont know where it is connected currently.
My current hypothesis is that my phone is unable to connect/register to the ATT network and so I dont get 4G speeds.
Does that make sense?
Dhanvi
Click to expand...
Click to collapse
Just so you know A small H by your signal bar means 4g. I am on AT&T and all I have to do is uncheck those boxes and reboot and data and MMS works fine
From my locked down superchargedV6 1.425ghz A "What tha duce?"

daavvis said:
Just so you know A small H by your signal bar means 4g. I am on AT&T and all I have to do is uncheck those boxes and reboot and data and MMS works fine
From my locked down superchargedV6 1.425ghz A "What tha duce?"
Click to expand...
Click to collapse
Yep. I'm aware that a H is 4G. I see an 'E' next to the signal bar. I did have an 'H' right after I installed my ROM but since today I'm only seeing 'E' .
I'll try flashing the CM10 ROM and check if that fixes my issue. If not, I'll copy over an apns-config.xml from an ICS install and replace my current one with that just in case.

try changing network mode by an awesome app called "Network" by phillip
in market .... it is simple & best option

shardul.phatak said:
try changing network mode by an awesome app called "Network" by phillip
in market .... it is simple & best option
Click to expand...
Click to collapse
Thanks for the tip. I'll try that. Looks like a reflash (of the same ROM) solved the problem for me though. Its back to 'H' for me. I still haven't tried to flash CM10.
Thanks for your help guys.

[Q] 4G LTE, signal bar....

I have an interesting problem : On my XT925 ( XenonHD rom), I have no signal bar at all while connected to a 4G network(0 db). I can still make call and the signal bar actually appears when I call, but as soon as I hang up the bars go back to 0. While I switch to a 3G or H+ network, I can see my signal bar.
I have no 4G connection problem, data works fine.
I guess its no really a problem... I just wish I could see my signal strength in 4G.
Anyone as ever came across something like that ?

atessier said:
I have an interesting problem : On my XT925 ( XenonHD rom), I have no signal bar at all while connected to a 4G network(0 db). I can still make call and the signal bar actually appears when I call, but as soon as I hang up the bars go back to 0. While I switch to a 3G or H+ network, I can see my signal bar.
I have no 4G connection problem, data works fine.
I guess its no really a problem... I just wish I could see my signal strength in 4G.
Anyone as ever came across something like that ?
Click to expand...
Click to collapse
I read that in the change logs of a few ROMs that the 4G signal strength display is a little wonky. If you needed to see the actual signal strength you could you into Settings -> About Phone -> Status. Alternatively, you could change the status bar setting to show numerical signal strength at all times instead of bars.

no luck...
bananapeapod said:
I read that in the change logs of a few ROMs that the 4G signal strength display is a little wonky. If you needed to see the actual signal strength you could you into Settings -> About Phone -> Status. Alternatively, you could change the status bar setting to show numerical signal strength at all times instead of bars.
Click to expand...
Click to collapse
Not working....when I switch to numerical display for the signal strength I get 0 dBm. As soon as I call out or receive a call it goes to -90dBm, stays up for 30 sec. and then goes back to 0.....
On a different note, the satus says that Im connected to LTE while the bar indicator read 4G.

atessier said:
Not working....when I switch to numerical display for the signal strength I get 0 dBm. As soon as I call out or receive a call it goes to -90dBm, stays up for 30 sec. and then goes back to 0.....
On a different note, the satus says that Im connected to LTE while the bar indicator read 4G.
Click to expand...
Click to collapse
Having the same issue with 4.2/4.3 roms. Thought it might have to do with network. Tried a few different settings, but no fix yet, and I'm not sure all calls come through. Data connection is no problem though. 4G /LTE are inter-changeable. Hopefully there's a fix it somewhere.

[Q] Any fix for this roaming bug?

The issue is that while roaming and data enabled on roaming, Nexus 5 (stock 4.4.4r2) just shows the roaming "R" icon instead of showing E, H, H+ or LTE icons for data.
This seems to be a well known bug: https://code.google.com/p/android/issues/detail?id=71339 , but no proper solution seems to exist. Does anyone have any idea how to get rid of this "R" icon without flashing any 3rd party ROM, tried Mahdi under MultiROM, it's the same issue there under it's default settings. I'm rooted and running ART.

madarchod said:
The issue is that while roaming and data enabled on roaming, Nexus 5 (stock 4.4.4r2) just shows the roaming "R" icon instead of showing E, H, H+ or LTE icons for data.
This seems to be a well known bug: https://code.google.com/p/android/issues/detail?id=71339 , but no proper solution seems to exist. Does anyone have any idea how to get rid of this "R" icon without flashing any 3rd party ROM, tried Mahdi under MultiROM, it's the same issue there under it's default settings. I'm rooted and running ART.
Click to expand...
Click to collapse
if u r in roaming and network is 2g it will show R
if network is 3g it will be 3g,H,H+ or LTE

jdprocks said:
if u r in roaming and network is 2g it will show R
if network is 3g it will be 3g,H,H+ or LTE
Click to expand...
Click to collapse
well network is 3g, connection speed reflects 3g, but it still shows only "R"..

anyone? any patch available for this bug?