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[Q] HELP! Lost 3G, Edge only

I was just exploring my phone and I went onto the hidden menu:
*#*#4636#*#*
From here, I changed the network thingy from GSM/CDMA auto (PRL) to GSM only just to see what it was about. All of a sudden my data connection went from 3G to edge. So then I changed it back to GSM/CDMA auto (PRL) and there isn't a change. I have turned off my phone and restarted but still only get Edge connection. The area I live in has a very strong 3G signal all the time. Is there any solution on how to get my 3G back? Im on stock rom 2.3.4 rooted. I also have the I9020A version from Rogers. Any help would be much appreciated.
*PS I really don't want to do a factory reset

Have you tried mark and unmark "2g only" in network settings?
Sent from my Nexus S using XDA App

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

[Q] Network mode cannot set to 3G

Just got my Nexus 5 today.
However, in Wireless&networks / Mobile networks / Network Mode, I can only set it as 2G or LTE but not 3G.
I am currently on b-mobile in Japan and my Nexus 4 works fine on the network.
Wondering is it some sort of bug of KitKat or is it somewhat related to the SIM card I am using...

seanyseansean said:
Probably the sim card. Mine gives me the option, but another n5 on a different network (o2/UK) doesn't.
Click to expand...
Click to collapse
hmm, in my case, I can see the 3G option, just that whenever I select the 3G option, the system would automatically reset it when I navigate to other page.
Is that also the case on your N5 with O2/UK sim card?
On the other hand, I will test my N5 on different sim card tomorrow.

I have the same issue. If I select 4g, the dot stays when I go back, but I only get a full bar 2g connection. If I select 3g and go back, no dot is there but I only get a 2g connection.
Sometimes this was solved in previous handsets by going into the service menu and selecting 3g/2g from there.

MarkMcLovin said:
I have the same issue. If I select 4g, the dot stays when I go back, but I only get a full bar 2g connection. If I select 3g and go back, no dot is there but I only get a 2g connection.
Sometimes this was solved in previous handsets by going into the service menu and selecting 3g/2g from there.
Click to expand...
Click to collapse
I also tried forcing the N5 to use 3G only (by going into the test menu with "*#*#4636#*#*" code) but it still does not work...

OK, so I tried the SIM cards from my colleges, and my N5 can connect to 3G without problem.
It's weird that my SIM card works perfectly well on N4 but NOT N5...
Did not experience such SIM card computability issue before...

httimchen said:
I also tried forcing the N5 to use 3G only (by going into the test menu with "*#*#4636#*#*" code) but it still does not work...
Click to expand...
Click to collapse
Works for me now. Went into that test menu and selected GSM/CDMA auto PRL and I now have 3g. Didn't have to reboot.

3G cannot set for Virgin UK Sim
MarkMcLovin said:
Works for me now. Went into that test menu and selected GSM/CDMA auto PRL and I now have 3g. Didn't have to reboot.
Click to expand...
Click to collapse
I am also having the same problem, purchased the Nexus 5 from carphonewarehouse, can set on 4G or 2G, but when i set to 3G and comeback, it resets. Is that a SIM card problem? I tried to go on testing mode and apply GSM/CDMA auto PRL, that also not working. Is that a KitKat bug?

Same problem on Orange/EE in the UK. I can see the 3G option but phone won't let me change to 3G. Option never sticks. Just stays on 2G. Any ideas? Is this a known bug?
Thanks 101

101_North said:
Same problem on Orange/EE in the UK. I can see the 3G option but phone won't let me change to 3G. Option never sticks. Just stays on 2G. Any ideas? Is this a known bug?
Thanks 101
Click to expand...
Click to collapse
i think it's not a bug.i think it's a hardware problem. i'm having it with vodafone italy.

Same here on T-Mobile Austria :/
Already changed SIM card, without success. Maybe provider related issues?

unexist said:
Same here on T-Mobile Austria :/
Already changed SIM card, without success. Maybe provider related issues?
Click to expand...
Click to collapse
I'm on straight talk TT&T with a new SIM card, but sometimes the network mode doesn't stick. No idea why...

replaced a new 3G SIM, no luck
Just replaced a new 3G SIM Card didn't work the 3G option for me - Chunghwa Telecom Taiwan.
But I can select 2G, and dial number to make a phone call, so the SIM slot seem works fine, maybe just configuration issue?!
And, also I find a very annoying defect of my Nexus 5 32G(White), when hard-reset or flash to Factory Image, my Nexus 5 32G white goes crazy!! it just keep stuck and loop at Google Logo (not even show the 4 circle animation), and won't boot at all!
And I finally find a way to make it boot, by keep trying repeat flash factory, erasing userdata, erasing cache etc. is every had this issue?

EE/T-Mobile (uk) and I can't select 3g either, well I can but it doesn't stick.

I have a similar problem, except I can only select 3G / 4G, and not 2G because the 2G option isn't even displayed!! So infuriating. It still works through the *#*#4636#*#* menu, if I select GSM only then it does indeed go to 2G.
Is it possible that the SIM is somehow telling the phone OS it can't do 2G only? This didn't happen with my old carrier (same phone, only just switched). I have a feeling it's caused by the same thing that makes my phone number show up as 'unknown' now, too.

I have the same issue, I tried two different SIM, on is a Straight Talk sim that is set up to use the ATT network and used a T-Mobile sim card, both were unable to keep 3G as a setting.

My Nexus 5 seems that reluctant to drop from 3g to 2g when 4g is selected i have given up and now just manually select 2g to make sure i have a signal (im out in the sticks a bit). Sat at the PC with 4g selected i get no signal whatsoever, with 2g selected i get an indicated full signal strength.
Why on earth the N5 is so reluctant to dip its toe in the 2g territory when no data is on is beyond me.

S6 lte problem

Hi
I have a samsung galaxy s6(sm-G920F) on 5.1.1 non rooted, the problem i am facing is that the lte stopped working without any reason, i didnt drop it neither i updated anything it just stopped working now i only see the E sign on the network bar, i couldn't find any answer for this so any help is appreciated
thanks in advance..

TalhaArshad96 said:
Hi
I have a samsung galaxy s6(sm-G920F) on 5.1.1 non rooted, the problem i am facing is that the lte stopped working without any reason, i didnt drop it neither i updated anything it just stopped working now i only see the E sign on the network bar, i couldn't find any answer for this so any help is appreciated
thanks in advance..
Click to expand...
Click to collapse
You said your rom is not rooted? That probably means the default network settings for your phone is LTE/3G/2G. That option will look for the best signal you have in your current location, then it will choose that data network i.e., EDGE .
It seems like your 4g/LTE signal is weak on your vicinity Perhaps, if you could force LTE (by rooting and installing Advance Signal Status app from Playstore [Device Info >Set Preferred Network Type > LTE only) you can have at least lte reception. Unless, 4g is not available in your area
Try going outside your house, and find open spot and see if your device was able to detect it.
Just let me know if you still have some concerns. Cheers!

batuzai04123 said:
You said your rom is not rooted? That probably means the default network settings for your phone is LTE/3G/2G. That option will look for the best signal you have in your current location, then it will choose that data network i.e., EDGE .
It seems like your 4g/LTE signal is weak on your vicinity Perhaps, if you could force LTE (by rooting and installing Advance Signal Status app from Playstore [Device Info >Set Preferred Network Type > LTE only) you can have at least lte reception. Unless, 4g is not available in your area
Try going outside your house, and find open spot and see if your device was able to detect it.
Just let me know if you still have some concerns. Cheers!
Click to expand...
Click to collapse
Thanks for ur reply
But if I insert my sim card in some other mobile i can see the lte sign on top :/
So it cant be the problem with the reception
& one of my friend uses the same simcard as mine
But he's able to use lte
I have tried the WCDMA only option
But cant get the lte sign
Please help me :/

batuzai04123 said:
You said your rom is not rooted? That probably means the default network settings for your phone is LTE/3G/2G. That option will look for the best signal you have in your current location, then it will choose that data network i.e., EDGE .
It seems like your 4g/LTE signal is weak on your vicinity Perhaps, if you could force LTE (by rooting and installing Advance Signal Status app from Playstore [Device Info >Set Preferred Network Type > LTE only) you can have at least lte reception. Unless, 4g is not available in your area
Try going outside your house, and find open spot and see if your device was able to detect it.
Just let me know if you still have some concerns. Cheers!
Click to expand...
Click to collapse
Thanks for the reply
But if I insert my simcard in some other mobile
It shows the lte sign on top
So it cant be the reception which is causing troubles :/
I cant even connect to a 3g
It only connects to an EDGE :/

TalhaArshad96 said:
Hi
I have a samsung galaxy s6(sm-G920F) on 5.1.1 non rooted, the problem i am facing is that the lte stopped working without any reason
Click to expand...
Click to collapse
Same problem for me. Same galaxy s6 model and same original android version 5.1.1 (g920fxxu3q0kn)
From a couple of days it doesn't connect on lte. But the big problem is that if I choose lte/3g/2g it doesn't connect neither in 3g. I have to force it to 3g only to let the device connect back to internet.
I don't know why but when I came back home, if I switch back on lte/3g/2g, it connect back again on 3g (no lte in my home area)
I'm not sure if it is involved with transit in/out wifi spot or some kind of lte cells. I will try other tests next days
I fear it could be a bad bug

Please help! No 3G or GSM, can't call, but LTE works fine.

I really need help with my device, I searched all over XDA and no-one seems to have the same issue as me.
Here is some information:
1) Nexus 6P (H1511)
2) 6.0.1 Absolute stock, no rom, no root, no custom recovery. Build number MMB29P.
Recently got a new Nexus 6P and imported to Russia. All of the major bands here are supported. And the phone worked excellent for a few weeks, but then it lost all 3G or GSM connectivity. Just randomly,didn't do anything with it, the only thing I did is move to another city but than I got back, the issue didn't resolve. LTE works perfectly but can't call or receive calls, can receive sms though. Reseting network settings and factory reset changed nothing. Tried manualy set network to WCDMA or GSM with *#*#4636#*#* command, the moment I switch to anything besides LTE the connection is lost. Contacted the provider, no problem on their side, my SIM works good in other phones, my phone with other SIMs - no.
I don't think it is a hardware issue because a few times I managed to get everything working after an hour of switching networks and bands with no particular order in the *#*#4636#*#* testing mode.
After a while I figured that if I set phone to "GSM only" on USA bands in testing mode, but at the same time set it to "LTE prefered" in the normal network settings menu. I am able to set phone to Band mode 7 and set the network back to 2G in network settings keeping it on " GSM only" the whole time and only after this compicated algorithm and after a reboot 2G and 3G starts working. But any reboot after that revertes everything back to only LTE stage. Also if I get everything working but than reset network settings everything stops working again.
I have no idea what caused such an issue, I really hope someone can help.
Sorry couldn't post screenshots because of the "10 posts rule".