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captivate 3G not working

I installed Froyo 2.2 a week ago on my Captivate. Also rooted my phone and fixed it to accept non-market apps.Now my 3G stopped working. I tried to reset my phone by turn my phone on holding vol button down and holding power button.The reset did not work. The phone would come on as normal. Can't restore phone or use the internet. Can anyone help me restore my phone and 3G?

Which ROM did you flash? Sounds like you flashed one of those EU ROMs that lacks 850MHz support. If this is the case, you will have to re-flash to a ROM that has the proper AT&T 3G support.

I used I897UCJI6-OCD-REV02-Low. Don't know enough to know if it is att supported. Can you tell or suggest a better one.

Have you checked under settings, wireless and network, mobile networks, apn; that you have at&t network settings? Also check if there is an option to disable data on the rom you installed and that it is not disabled

patillo5 said:
I used I897UCJI6-OCD-REV02-Low. Don't know enough to know if it is att supported. Can you tell or suggest a better one.
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Click to collapse
That's the leaked AT&T ROM. IIRC, first time you fire up the ROM, you will be prompt to chose a data connection mode. You may accidentally chose wi-fi only mode. You will need to got to Settings to turn on cellular data connection or press and hold power button and select to turn on cell data connection.

You are right it is the leak version. I use the 3G data connection the first 4 or 5 days I had the ROM. Yesterday it stop working all of a sudden. I tried to change the setting but it will not let me. How do I reinstall Froyo or change back to the stock 2.1? Is there a more stable ROM? Been reading but need a little help.

Download Odin3 one-click, connect the phone on Download mode and hit Start. Wait a few minutes and you are back on stock
PD: My favorite roms are Assonance and Axura, they are the ones that i find more stable. Cognition and Perception are also popular. And there is a whole bunch of other custom roms as well that i have not tried yet...

Thank You. You have been very helpful. I use odin and hit master clear. Fixed my problem. went back to froyo2.2 new. I think I will try something new. Again Thanks

Roaming on CM7??

Flashed CM7 the other day (thanks again for the help Carmon!) and love it. Only issue I am having so far is...I've been unable to roam. I live in a fringe area, and normally roam on Verizon towers at home. I attempted *228 several times (while on US Cellular), and the recorded message (voice) states that the update was successful, but the message on my screen says "activation unsuccessful". I am able to make and receive calls and send messages, etc...but the phone will not roam. I have networks set to automatic, and national data roaming enabled. Any ideas?? Anyone??

The screen always says unsuccessful, it's a known glitch. Try setting roam options to home only or whatever, sometimes they get mixed up in the process of building and fixing other stuff.
Sent from my MIUI SCH-i500

sageDieu said:
The screen always says unsuccessful, it's a known glitch. Try setting roam options to home only or whatever, sometimes they get mixed up in the process of building and fixing other stuff.
Sent from my MIUI SCH-i500
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Appreciate your response! I've tried every setting. Home only gives me US Cellular signal. When set to "Affiliated Networks", the setting will not remain there, it resets itself to Home only. When set to "Automatic", it catches US Cellular signal, but does not roam when there is no US Cell signal.
Surprised nobody else has this problem...

It may be a issue in which we need to go all the way back to stock and do the ADW fix.

Yeah possibly... scarmon do you have that to post? Ive never had to do it and I never copied it down...
Sent from my MIUI SCH-i500

I know how to do it but not sure on the names for everything until I'm in there. Let me see if I can find the thread with the.video on it. If not the OP can IM me. He has my Gtalk and I can walk him through it if needed.

Step by steps found here
http://forum.xda-developers.com/showpost.php?p=12776933&postcount=4

scarmon25 said:
Step by steps found here
http://forum.xda-developers.com/showpost.php?p=12776933&postcount=4
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Click to collapse
Seems that fix is for phones that are always roaming. Is it known to work for the problem I'm having also (no roaming)??

Just got done flashing back to stock and completing the ADW fix. Flashed back to CM7...still no roaming. Tried every setting and every combination of settings with NO luck.

rthibeault said:
Just got done flashing back to stock and completing the ADW fix. Flashed back to CM7...still no roaming. Tried every setting and every combination of settings with NO luck.
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That's really odd... are you sure you're in a roaming area? The phone wont roam if you have uscc signal.
Sent from my MIUI SCH-i500

I am in a roaming area...as I mentioned above, I live in a fringe area, and my phone (usually) constantly switches between US Cell and Verizon. Now, it does not switch...it just goes from US Cell to NO service.
On another note, since I re-flashed, I am not receiving sms. And when I send sms, they are blank???

When you went back to stock did you flash the EH09 Build or did you flash EE19.

Edit. Didn't mean to double post

I did a full flash back to stock Froyo since I had the files already...
Everything is working except sms...

[Q] 4G Connection Issues (Haven't Lost WiMax Keys)

Hello. After lots of rooting, ROM flashing, and all that good stuff, somewhere in the process I did something that must be keeping me from using 4G. When I turn on my 4G antenna, in settings it just says I'm "Disconnected" and when I scan for service, it scans for maybe five seconds and goes back to disconnected. In the settings, all three fields for 4G network information (Network provider, Signal strength, and IP address), are blank.
I used wimax_mtd and ls /data/misc/wimax/ to make sure I still had my keys, and I do, they match what's written on the back of the phone exactly. I tried this with no luck.
Anyone know what is causing the problem? I'm running a fully rooted gingerbread.

Whitellama said:
Hello. After lots of rooting, ROM flashing, and all that good stuff, somewhere in the process I did something that must be keeping me from using 4G. When I turn on my 4G antenna, in settings it just says I'm "Disconnected" and when I scan for service, it scans for maybe five seconds and goes back to disconnected. In the settings, all three fields for 4G network information (Network provider, Signal strength, and IP address), are blank.
I used wimax_mtd and ls /data/misc/wimax/ to make sure I still had my keys, and I do, they match what's written on the back of the phone exactly. I tried this with no luck.
Anyone know what is causing the problem? I'm running a fully rooted gingerbread.
Click to expand...
Click to collapse
What rom/version? What provider? What troubleshooting steps have you taken?

Sprint. The ROM is just a rooted version of Gingerbread (2.3.3). The software number is 2.76.651.4. Troubleshooting? I don't even know what you're asking there. I have my keys, I've confirmed that. I tried one thing from the thread I linked. I can't connect. What else am I supposed to try?

Whitellama said:
Sprint. The ROM is just a rooted version of Gingerbread (2.3.3). The software number is 2.76.651.4. Troubleshooting? I don't even know what you're asking there. I have my keys, I've confirmed that. I tried one thing from the thread I linked. I can't connect. What else am I supposed to try?
Click to expand...
Click to collapse
Flash the new radio/wimax radio, update profile/prl/twice/reboot twice, tweak ##DATA# settings.
Read the Wiki here:
http://forum.xda-developers.com/wiki/index.php?title=HTC_Speedy
And search around the forum.

Whitellama said:
Hello. After lots of rooting, ROM flashing, and all that good stuff, somewhere in the process I did something that must be keeping me from using 4G. When I turn on my 4G antenna, in settings it just says I'm "Disconnected" and when I scan for service, it scans for maybe five seconds and goes back to disconnected. In the settings, all three fields for 4G network information (Network provider, Signal strength, and IP address), are blank.
I used wimax_mtd and ls /data/misc/wimax/ to make sure I still had my keys, and I do, they match what's written on the back of the phone exactly. I tried this with no luck.
Anyone know what is causing the problem? I'm running a fully rooted gingerbread.
Click to expand...
Click to collapse
Unless your actually connected Network provider, Signal strength, and IP addresswill appear blank when you look in settings. If you've confirmed you have your keys, and are in a 4G zone. Then you can try a simple trick that sometimes works. Put the phone in Airplane mode for a few minutes. Then take it out of Airplane mode, and try to connect to 4G. If that doesn't work then go ahead and update the radios as VICODAN said. That should solve the issue.

Still no luck
I just tried all of those steps, besides the airplane mode one, with no luck, but I'm trying the airplane mode idea right now, and if that doesn't work, I'll elaborate.
EDIT:
Okay, no luck.
So I went through and flashed the newest radio and the wimax radio, and in the process I realized that I didn't actually have the newest radios beforehand. (I also learned that I hadn't yet formatted my microSD card to FAT32, so it's good that I realized that too. ) After that, I went into System Uupdates and updated Profile and PLR, then I rebooted, and I did it again, and I rebooted. You said to do it twice, so that's why, but you said twice twice so I wasn't sure which part to do twice. (Wow, that was a mouthful.)
After all of that, I tried the airplane more thing, with no success. I've connected to 4G in the past here, and the spring website even says my area has 4G coverage, so I know that's not the issue.
Also, about the tweaking ##DATA# settings, I mentioned that I tweaked it according to the link I put in the original post, but is there anything else I should try?
Thanks for the suggestions so far.

Whitellama said:
I just tried all of those steps, besides the airplane mode one, with no luck, but I'm trying the airplane mode idea right now, and if that doesn't work, I'll elaborate.
EDIT:
Okay, no luck.
So I went through and flashed the newest radio and the wimax radio, and in the process I realized that I didn't actually have the newest radios beforehand. (I also learned that I hadn't yet formatted my microSD card to FAT32, so it's good that I realized that too. ) After that, I went into System Uupdates and updated Profile and PLR, then I rebooted, and I did it again, and I rebooted. You said to do it twice, so that's why, but you said twice twice so I wasn't sure which part to do twice. (Wow, that was a mouthful.)
After all of that, I tried the airplane more thing, with no success. I've connected to 4G in the past here, and the spring website even says my area has 4G coverage, so I know that's not the issue.
Also, about the tweaking ##DATA# settings, I mentioned that I tweaked it according to the link I put in the original post, but is there anything else I should try?
Thanks for the suggestions so far.
Click to expand...
Click to collapse
Last thing to try is ##rtn#, wipes fone and resets to factory defaults, then do hands free activation.
Also make sure your [email protected] stuff is configured properly. This is also somewhere in ##DATA# settings.
You can also try flashing a different rom like CM7
But before you do that call sprint tech support and tell them to fix it. They might be able to do something on their side.

Okay thanks, I'll call them later today.
Sent from my PG06100 using XDA App

So I called, the woman had me do a few things, and after hitting restore from the menu in ##DATA#, the 4G is behaving differently. Instead of scanning and returning to disconnectec, it now goes to "turning on ..." Then to "turning off ..." And back to on again. It cycles forever, until I manually turn it off.
Sent from my PG06100 using XDA App

Well it sounds like something is still wrong. Try flashing a different Rom to rule that out. If that doesn't work, and having WiMax is a must. Then you may want to think about running an RUU back to 2.2 stock. Then just start the whole root process all over.

[Q] Have no network connection on EaglesBlood ICS?

First off what's weird is that in the Access Point Names it shows Simple Mobile(which I use) and T-Mobile. Usually when I flash a new Rom it only shows T-Mobile.
Secondly it will not let me edit any of these two APNs.
Still no service when I have the little bubble checked on either one. What's going on?

nothing?

I am going to say this even though you probably already tried it, but have you tried doing a full wipe and reinstall? If not this could fix the problem. Are you able to see the percentage of your battery? If it just stays at 100% and never changes you should look in the about phone in the settings and see if it can see the baseband as no baseband no ability to read battery and no working network abilities. If you can't see the baseband then get the app called GetRil and see if you can get a compatible one to get yourself back up and running.
If none of what I said above applies to your situation then you should try a different kernel. I am running EB AOSP 4.0.4 build 2.5 with the Harsh kernel with no problems.

TheKid1 said:
First off what's weird is that in the Access Point Names it shows Simple Mobile(which I use) and T-Mobile. Usually when I flash a new Rom it only shows T-Mobile.
Secondly it will not let me edit any of these two APNs.
Still no service when I have the little bubble checked on either one. What's going on?
Click to expand...
Click to collapse
I have a similiar issue just the variables are slightly reversed ( I am on T-Mobile, don't even know what Simple is, using GB roms, not ICS) Even made a similair thread on here. 2 Things, are you shutting down and then booting up or are you rebooting. I only get my data back when I reboot. I can't shut down and manually restart.
Secondly, when you go into the about phone section, does your mobile data network section say connected or disconnected?

Permanent Fix for intermittent data issue on CM9/10/AOSP 4.0+ based ROMs

After months of having this reoccurring issue myself, I FINALLY figured out a solution. It had gotten so bad on mine that wiping the rom won't matter... the only solution was to wait for several minutes/hours until it returned or switch to a Sense-based or a GB rom. This fix should appeal to those who had to return to older roms due this issue driving them insane!
Let's clear up a few things first.. to those having this issue and being able to restore data by going into airplane mode might wanna invest in a new sim card. Best to go into a retail location and pick one out yourself. The newest ones (model number TM9177 or higher) work the best and have the fewest data drop offs. That should fix a lot of users intermittent data issues from returning.
If you still have data issues and already have a newer model sim card (TM9177 or higher) OR have data issues that don't get fixed after a reboot, switching into airplane mode, wiping, normally have to wait a long time for it to return on its own, etc.... then this part will fix it. :highfive:
Go to home, menu, settings, wireless & networks, more, mobile networks, access point names, menu, and FINALLY add a new apn. Chose whatever for name of apn (maybe tmobile alternate, tmobile 2, or whatever), the next line, the actual apn, with be "wap.voicestream.com" (no quotes, duh). Next add this line to MMSC... "http://mms.msg.eng.t-mobile.com/mms/wapenc". Everything else should be left as is. Now hit menu, save apn. This new apn seems to work with all features I've tried... text messaging, full data access, same speed as default epc.tmobile.com apn, tethering, etc. Haven't tried MMS but the settings for that line is there in our alternate apn we just made. Please post results on that if anyone still uses that feature So... that's it. The old apn works nicely and you say GO TO HELL! to the annoying data icon flashing on and off forever!
Be sure to post your results/experiences to confirm but it seems to be gone on 4 other MT4GS CM9/10 users besides my own. I REALLY HOPE y'all are as happy with this fix as much my family, friends, co workers, and I are! Do forget to use the thanks button
Also... you can try "internet.voicestream.com" for an additional apn. I'm not sure if MMS will work on that one even with the MMCS set as "http://mms.msg.eng.t-mobile.com/mms/wapenc" but it's work a try. If anyone wants to check it out is welcome to. Again... post your results. I'm not sure how long tmobile will leave these old apns active but I bet it's longer than anyone will be still using this model lol! Enjoy!

I've been one of the lucky ones not to have had this problem but if this fixes the issue of those that have been, this is one NIIIICE CATCH! GOOD WORK, sino8r!!
I'm very anxious to hear how this works out for everyone!

Intermittent Data 3G 4G Loss Disconnect
Wow, Thanks. I've been fighting with this all day.
I've been running SilverL CM 10.1 for a couple of weeks and today suddenly lost my T-Mobile data connection.
I tried many solutions (I wish I'd found this thread sooner). Wiping Cache, Fix Permissions, Reflashed, different Kernals, different loads. Going back to Gingerbread worked, but I lost the data when I went back to ICS/JB.
There was even another thread that was close with deleting all APNs and creating a new one, but the settings still weren't there.
This took care of it right away.
THANKS !!!!

Problem with t-mobile service, signal
Would u be able to help me with this problem? http://forum.xda-developers.com/showthread.php?t=2203084

Sir You just saved my phone and my sanity thank you so much !!!!!!
---------- Post added at 07:29 PM ---------- Previous post was at 07:00 PM ----------
Ratler5 said:
Sir You just saved my phone and my sanity thank you so much !!!!!!
Click to expand...
Click to collapse
Tested it with 2 diffrent JB roms fixed data problem in about 10 seconds from selectign new APN. Data speeds are back to normal! Will update if anything changes.

After several days even weeks of no issue then suddenly I get data issues again so I go back to mobile networks to find the second APN I created to be deleted... Anyone experience this?
Sent from my MyTouch 4G Slide using xda premium

thanks for the info! i ran across this thread while searching for a new ROM for my mytouch 4g slide, hoping it would fix the issue. once I arrived to the access point names, i noticed that the apn selected was for LTE. I switched to the regular one and now it works great. thanks!

I had this issue while on cm9 releases but it had gone away after I began using unofficial 10.1. Sort of. In certain areas- and I assume with certain towers - my data wouldn't work with some apps (ie., Facebook, Google maps) even though the data icon would show "H" or "3g" locked on and blue consistently. Sure enough, this fixed it right up.
Also, although my phone shows the option for the Tmobile lte APN in the settings, it was not selected by default. Thanks for this!
Sent from my MyTouch 4G Slide using xda app-developers app