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[Q] No Edge, 3g or 4g

Last week I stopped being able to use the internet, marketplace and streaming service on my Galaxy S 4g unless I'm on wi-fi. Today I realized it appears as if I'm no longer getting edge, 3g or 4g service. I have bars, but nothing next to it telling me what network I'm on.
My phone is rooted to stock with bloat removed and has been for months. Any ideas on how to fix this?

Try toggling airplane mode. Might help to remove your SIM card & ensure the contacts are clean then reseat it.
Sent from my SGH-T959V using XDA App

I'm having the same issue after moving CM7 => MIUI.
I've moved back to stock ROM XXJVT, but still not able to connect to 2G/3G. Anyone help.....
Btw, I'm sure the APN settings are correct and packet data is checked.

omer9 said:
I'm having the same issue after moving CM7 => MIUI.
I've moved back to stock ROM XXJVT, but still not able to connect to 2G/3G. Anyone help.....
Btw, I'm sure the APN settings are correct and packet data is checked.
Click to expand...
Click to collapse
You are in the wrong forum.
Sent from my Nexus One using XDA App

patientx1013 said:
Last week I stopped being able to use the internet, marketplace and streaming service on my Galaxy S 4g unless I'm on wi-fi. Today I realized it appears as if I'm no longer getting edge, 3g or 4g service. I have bars, but nothing next to it telling me what network I'm on.
My phone is rooted to stock with bloat removed and has been for months. Any ideas on how to fix this?
Click to expand...
Click to collapse
Follow these steps.
Settings,wireless and network,mobile networks,accesspoint names,and then check t-mobile us.
Sent from my SGH-T989 using XDA Premium App

try taking the battery out for 10min

I guess I figured it out. But it doesn't seem very logical, but hey it works.
I changed the url of my provider from "live.vodafone.com" to "live .vodafone.com" (watch the space between live and .vodafone) and all of a sudden E/G/H appeared in the status bar.

Still, double check the APN settings, make sure everything is entered in right (proxy, username, authentication type, etc). Were you able to send pictures still? You need to make sure it's not a hardware problem.

Possible fix to data connection issues

As with many skyrocket users, there seems to be trouble connecting to the AT&T data network for an extended time. the 4g icon indicates its connected but won't send or receive data unless packet data is disconnected and re enabled. After some hours of research and calls to customer service, I've found what could be a potential fix.
By dialing the ussd code ( *#*#4636#*#*) a menu comes up and gives you the options of
phone information
battery information
Usage statistics
And wifi information.
Under the phone information menu, an option for data network preferences appears at the bottom of the screen. By changing third setting, the connection issues should be solved...
however...
I can't seem to get any of the selections to stay. meaning, are I select my preference and exit, when I return to the screen its at its original setting. I believe it may change and stay if I rout which I haven't due to my phone being an AT&T company phone so if any rooted skyrockets would like to volunteer and test out my theory, we would all be greatly appreciated.
Sent from my SAMSUNG-SGH-I727 using XDA Premium App

You are basically disabling the LTE radio (network) but it is temporary (for testing purposes). I think using a non-LTE APN will do the same thing and you can change it back when you are ready. Someone that knows more can correct me if I am wrong.

I used that method originally however I ran into the same issues. I was using the CINGULAR.WAP apn.
If anyone knows of another apn that I can test I would appreciate it
Sent from my SAMSUNG-SGH-I727 using XDA Premium App

OK so this is what worked for me
For apn name i put AT&T and for apn type I put just : Phone and left everything else blank and even input the mms setting found online for at&t and that's got me hspa data so far
Sent from my SAMSUNG-SGH-I727 using xda premium

yes you have to add the other APNs for this to work. If you only have the PTA APN, it will only lock onto LTE if in a LTE area.
Now if you are rooted and running a ROM where you can change the network within the normal options area, you have to set the APN first then change to H+. It may fail the first time but try it again and eventually it will downshift to H+.

shansmi said:
yes you have to add the other APNs for this to work. If you only have the PTA APN, it will only lock onto LTE if in a LTE area.
Now if you are rooted and running a ROM where you can change the network within the normal options area, you have to set the APN first then change to H+. It may fail the first time but try it again and eventually it will downshift to H+.
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Click to collapse
will this method still connect to lte? Not that it matters to me since I don't live in an lte zone but just out of curiosity
Sent from my SAMSUNG-SGH-I727 using XDA Premium App

I kept trying my method and it worked. So far no disconnect or data stall outs to report reaching day 3 now
Sent from my SAMSUNG-SGH-I727 using XDA Premium App

i m have unlocked skyrocket, currently in india using a 3g/4g sim card. i went through the *#*#INFO#*#* menu and selected "WCDMA Preferred" then i turned radio OFF and ON back again. since then it is set to "WCDMA Preferred" only and i m unable to change it.. Is it because i have only 3g available in india..?? also will I be able to change to "GSM/WCDMA/LTE AUTO" when i come back to United States???

AT&T Samsung Galaxy SII SGT-I727 data issues fixed ...
I broke my old HTC Inspire. I purchased a Samsung Galaxy SII SGH-I727 off of the eBay as a replacement.
When I moved the SIM card over everything was fine, except I had no data, even though I have a valid data plan. I still had wireless at home, but my data plan did not work when out on the street.
I called AT&T, told them the issue, and that I suspected that it had something to do with "LTE". They made some internal changes, which sounded like they activated LTE service for me. Data plan now working perfectly.

ejgallant said:
I broke my old HTC Inspire. I purchased a Samsung Galaxy SII SGH-I727 off of the eBay as a replacement.
When I moved the SIM card over everything was fine, except I had no data, even though I have a valid data plan. I still had wireless at home, but my data plan did not work when out on the street.
I called AT&T, told them the issue, and that I suspected that it had something to do with "LTE". They made some internal changes, which sounded like they activated LTE service for me. Data plan now working perfectly.
Click to expand...
Click to collapse
The inspire didn't have lte did it?
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2

[Q] Unlocking Question

I have requested my unlock code from T-Mobile. I have my Straight Talk SIM card ready to go. Now, my question is:
Does having Root and/or custom roms affect the process of unlocking a device?
I just want to make sure ahead of time so I can make the process as smooth as possible. Thanks in advance!

I believe you just need to be on a stock ROM, then it'll always be "activated" no matter what you flash.

So root makes no difference?

Doesn't make a difference.
Sent from my LG-P999 using XDA

OK thanks!!!

You must unlock in stock, but once you do, you are free to root away.
Sent from my LG-P999 using Tapatalk 2

Being rooted and running a custom rom doesn't matter... I have unlocked two of mine one running Weapons and the other running Hellfire Sandwich 1.7 (dirty) and they both unlocked fine
Sent from my $40 Sensation XE with Beats Audio

Well I ended up having to flash a stock rom to get it to work, but my phone is unlocked. which led me to a weird question:
I put my friends Straight Talk sim card in my phone to be sure it was working, and the phone had service and data on it right away. I was able to make phone calls, surf the web, send texts (I didn't test out the MMS). I thought adjust the APN settings was a must for all that stuff to work...? I didn't change a thing. But then it got me curious as to what my APN settings actually were. But when I went to click on the APN button under settings>mobile networks, I get the horrible "Unfortunately the process com.android.phone has stopped" error. I haven't seen that since I stopped using Wifi calling. Now it looks like I can't change my APN if the need arises. Anyone know of a loop hole to this?

Does 3g/hspa work for you sorry to change subject but can't find info on this subject I'm thinking of moving to this phone from the thrill 4G but in afraid my straight talk Sim won't connect 3g since it's TMobile phone and straight talk is Att towers to best of my knowledge
Sent from my LG-P920 using XDA

Straight talk runs on a variety of frequencies from its parent companies depending on what device you have. AT&T devices are equipped for Straight Talk's 3G network because they operate on the frequencies. T-Mobile devices operate slightly differently. However, adjusting the APN settings correctly to transmit date via AT&T's service is supposed to to more or less resolve the issue. Unfortunately I can't seem to do that. It may be something to do with the rom I'm using, but I'm not sure. I'll have to text it out.

that would be awesome I'll keep checking back to see your results
Sent from my LG-P920 using XDA

If straight Talk uses Att's 3g frequencies then you won have 3g on this phone. This phone does not have the proper radio frequency for it.
Edit: look at my answer in your other post.
Sent from my LG-P999 using XDA

verizon 4g radio

hi has anyonr else eperiance this same issue. whenever I go to an area that has little signal or turn the wifi off and on my phone resets to 3g. I have to keep going into the apn settings and change it from EHRPD to 4GLTE and then restart my phone. I cant change any of the settings oe delete extra APN's so I posted a screenshot and im hoping someone can help me out. Thanks
Sent from my SCH-I535 using xda app-developers app

plasmasnakeusa said:
hi has anyonr else eperiance this same issue. whenever I go to an area that has little signal or turn the wifi off and on my phone resets to 3g. I have to keep going into the apn settings and change it from EHRPD to 4GLTE and then restart my phone. I cant change any of the settings oe delete extra APN's so I posted a screenshot and im hoping someone can help me out. Thanks
Sent from my SCH-I535 using xda app-developers app
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not that it helps much, but this is an issue seeming to affect alot of us. I havent been able to correct it yet however. If I find anything out I'll post it.

Just put on airplane mode and turn it back off. Boom your done.
Sent from my SCH-I535 using xda premium

Is that an app you use to change those settings or is that buried somewhere?
Sent from my SCH-I535 using xda app-developers app

I just checked as I haven't seen it yet either. Settings, More settings, mobile network, access point names
Kind of cool. Mine showed the first option chosen but it hope between 3G and 4G as usual. Choosing LTE made no difference for me. I have virtually no 4g signal where I love
Sent from my SCH-I535

xceebeex said:
Is that an app you use to change those settings or is that buried somewhere?
Sent from my SCH-I535 using xda app-developers app
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Click to collapse
Airplane mode is a feature of the phone and turns off all radios. You can hold the power button and choose airplane mode or use the quick toggle in the notification window. Since it sounds like you may be in an area with weak 4G, you can also use an app called Phone Info to set it to CDMA auto (PRL) under Device Information. You can also change it back to LTE/CDMA/EvDO if you want it to switch as normal.

With the Verizon S3, is there the need to do *228 (or *22899) ? I did this every so often on my old HTC Incredible.

frankybeenz said:
With the Verizon S3, is there the need to do *228 (or *22899) ? I did this every so often on my old HTC Incredible.
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Click to collapse
Doesn't work on LTE devices. A reboot essentially does the same thing. Some have recommended pulling the battery with the phone on, removing the sim card for about 30sec and then putting everything back in.

Thanks, I know what airplane mode is, wasn't sure where the APN setting was. I will look in to phone info though.
Sent from my SCH-I535 using xda app-developers app

Are you guys also experiencing the "No Sim Card" and "No Network Connection" issues?
Or is this an entirely different issue?

When this phone goes to 3g, it does seem extra bad on how long it takes to switch back to 4g. i have areas where i live where it goes to 3g when going in between hill (less than a 50 foot stretch) and it will not go back to 4g for over 10 minutes if i dont manually do it. Not to mention my LTE never goes above 10 mbps on the best days

Somewhat related...If you use Anycut to create a shortcut to IOTHiddenMenu, enter the ##DATA# Menu, edit. Under "Advanced", there is an LTE toggle, under "Other" > "HDR/1X" you can set the phone mode, and then under "Other" > "LTE APN Settings" you can somewhat modify the APN settings, reset and discard. If it asks for a password, it's 000000.

I gave these a try. I'm trying to find a way for my phone to favor 4G when there's a 4G signal, no matter how weak.
Yesterday I did a test, 3G with 3 bars vs 4G with 0 to 1 and 4G had consistently faster download speeds and shorter ping times. The upload varied from similar to 3G to slower.
Sent from my SCH-I535

Josolanes said:
I gave these a try. I'm trying to find a way for my phone to favor 4G when there's a 4G signal, no matter how weak.
Yesterday I did a test, 3G with 3 bars vs 4G with 0 to 1 and 4G had consistently faster download speeds and shorter ping times. The upload varied from similar to 3G to slower.
Sent from my SCH-I535
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Click to collapse
probably easier said than done. The phone info app can force LTE but you lose voice and text.

Ya I found that out yesterday when testing speeds. I went to send a text then make a call and no luck
Otherwise 4G service where I live could be excellent at one spot then a mile away no service. If I had excellent 4G consistently I'd consider GoSMS which I believe has the option for data text and also a separate VoIP app
Ah well hopefully something will be figured out eventually. With a strong 4G signal 4G is considerably faster and more consistent than my 20mbps home broadband
Sent from my SCH-I535

send it back
I've had similar issues with my network. I had no 4G in 4G areas, but mainly my wifi would disconnect randomly and 3G also dropped to 1X a lot. I ended up having to send it back and get another one. So far no issues. Also the new ones have an "Updated" sticker on them. I think it was just a software update they applied, but I never got the OTA on my old phone.

lefos123 said:
I've had similar issues with my network. I had no 4G in 4G areas, but mainly my wifi would disconnect randomly and 3G also dropped to 1X a lot. I ended up having to send it back and get another one. So far no issues. Also the new ones have an "Updated" sticker on them. I think it was just a software update they applied, but I never got the OTA on my old phone.
Click to expand...
Click to collapse
Your new phone came with an already updated firmware version I535VRALG1 instead of the original version I535VRALF2.

lefos123 said:
I've had similar issues with my network. I had no 4G in 4G areas, but mainly my wifi would disconnect randomly and 3G also dropped to 1X a lot. I ended up having to send it back and get another one. So far no issues. Also the new ones have an "Updated" sticker on them. I think it was just a software update they applied, but I never got the OTA on my old phone.
Click to expand...
Click to collapse
I'm having the same issue with my second replacement phone... My first one was replaced for an entirely different issue (loose home button).
Did you get the "No Sim Card" notification and "No Network Connection" message?
I think I might have to return this one as well...

PJnc284 said:
probably easier said than done. The phone info app can force LTE but you lose voice and text.
Click to expand...
Click to collapse
Not sure if anyone will have the same luck I have with the "Phone Info" app, but with it I was able to get my 4g service back and my phone is functioning normally again. Just open the app, select Device Information and scroll down to "Set preferred network type" and select "LTE/CDMA/EvDo" then get out of the app.. 4g should return shortly there after. When I looked at it, my device was set to "GSM/CDMA auto (PRL)"

Nexus 5 D820 not staying on network in Canada EFS problem??

Hello there,
I will try and explain this in the most detail I can.
I own a nexus 5 32gb phone, my wife owns a 16gb nexus 5. I was on prepaid service for the last 2 years with a company that did not offer LTE. I have switched to FIDO and they do have LTE. Her phone works great, texts send/recieve, mms, data all works as it should. My phone does not. it connects then shows LTE but cant do anything not even phone calls, sometimes a reboot works for a time other times not at all.
In comparing the 2 I realized I may have changed something long ago on mine and that is why it wont work right. If I go to the hidden settings page on both phones the difference I notice is that her phone shows ping google.com and mine shows ping google.co.uk.
For some reason I remember changing something that perhaps had to do with the radio way back to boost my service at the time. I have no idea how to change this back as the efs shows the uk ping. I assume this is why I cant have a proper working phone but maybe someone can work that out.
FYI, I have flashed every google version I could find and the same thing happens, tried flashing radios same thing. select USA band in hidden 4636 menu and it wont stay on data.
I am at a standstill now and need help. I hope this explains the problem and someone who knows can help me.
If I put my sim in wife phone it works as it should with no problems, I tired my sim in a phone at FIDO store and it works exactly like it should too so I know it is the phone.
I know the efs is specific for every device and there is no one size fits all for it, but is there a way to return it to true default? If not is there a way to rebuild it?
My phone at the moment is causing me grief I hope the community can figure this one out. I am willing to try anything at all, custom roms, efs wipe whatever makes this work
I have done wiping, roms etc before, it's been awhile but I am ok with doing any procedure you recommend
Thank you for your time, if you need more info, screenshots, etc let me know
data, signal, calls, sms wont stay on, loose signal all over

I think you might have messed with your apn. Go to settings, wireless and networks, more, cellular network settings, access point names. Make sure what's in there is setup the same as your wife's phone.
Sent from my Nexus 9 using XDA Free mobile app

jd1639 said:
I think you might have messed with your apn. Go to settings, wireless and networks, more, cellular network settings, access point names. Make sure what's in there is setup the same as your wife's phone.
Sent from my Nexus 9 using XDA Free mobile app
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Click to collapse
APN is fine, same as hers. Actually not now since i changed to 3g. But in testing the LTE it was the same

I have reverted to 3G and data seems better, at least stable. Getting lots of service drops though and sms are delayed sometimes dont come at all

jd1639 said:
I think you might have messed with your apn. Go to settings, wireless and networks, more, cellular network settings, access point names. Make sure what's in there is setup the same as your wife's phone.
Sent from my Nexus 9 using XDA Free mobile app
Click to expand...
Click to collapse
FIXED! After 2 months of trying to figure this out it dawned on me. When prying the volume side of the back cover to fix my chargin port I must have inadvertently dislodged the black cable from the motherboard up top. upon first look it seems to be in place, upon further light inspection I could see it was not all the way on. Reconected it and BOOM full signal, full LTE and no other issues!!
I am so happy, lets party!