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No data connection after flashing rom

Hello, i flash 2 roms in total, 1st one was blazingdragon 1.9 and i lost my data connection after flashing it. so then i decided to flash CM7 and i got the same issue... no data connection. i am with FIDO and wen i turn on my data roaming, i connect to data, but when i disable roaming it doesnt connect. I love the rom but w.o data it is nutin. I had xperia x10 before and flashed tons of roms w.o any issues, but this one i cannot manage to fix.
Does anyone have any idea on how to fix this issue? and i havnt use any apn backup app.
I also need a way to get back to my stock rom, the one with FIDO. i also need tips on that.
THANKS!
EDIT: i did manage to get data on fears rom and i did apn save it, and i tried to do apn restore and CM7s rom and no luck it failed
Any new help?

[Q] Need help connecting to data!

Im new to flashing roms, so bare with me. I flashed my first rom last week, using Andromeda3 and Ursa Minor #2 kernel, everything worked great except, i couldnt connect to 3G/H, even though it showed up on notification bar, tried looking for answers, i ended up flashing different modems to no avail. So, i flashed back to stock eclair, used kies mini to upgrade to Froyo 2.2 UCKB1, Data worked. I then flashed UCKB2 rom, data didnt worked) i tried wiping cache and all that, still no data connection, btw, wfi worked. So i flashed back to UCKB1, again, everything worked perfectly. The other day, i flashed Fusion XI and GB bootloaders, i must say i like this rom very much, but again still couldnt connect to 3G/H, everything else worked, although i havent tested the GPS yet, i am getting amazing DL/UL speeds through wifi. Anyway, i searched XDA for any answers i could find and pretty much tried them all, seems like only KB1 3G will work, but any custom rom out there, data hasnt worked even though i see it in notification area, i'd use market and browser, but would say could not connect. Am i doing something wrong/ missing a step?? I really like Fusion XI and dont want to flash back to stock. Any help would be appreciated.
Didnt know where else to post this, seems like other people dont have the data connection issue :/

That's weird.
Try flashing the kb1 modem on fusion.

I did try flashing the KB1 modem, but that too, didnt work. it only works if i go back to stock KB1 for some reason.

where do you live? what Carrier are you with?
have you checked your APN settings?
fill in your location and carrier/ device info in your signature/ xda user information.

I Live in Southeastern Pennsylvania. And currently have AT&T as my carrier. I tried APN settings, but not sure what to set it too, i have used APN Manager from the Market.

Try resetting ur apn settings to default. Then reboot.
Sent by XDA Premium App

how do u reset apn settings?

Settings, wireless and networks, mobile networks, access point names. Now hit the menu key and reset default apn well be on the bottom left...

Ok, tried that, still a no go connecting to data. I just flashed stock 2.1 then 2.2 update through Kies mini, i no longer have data connection even on official stock roms could this be a hardware issue??? gps sucks. ran a gps test using the app from market. other than that, everything else is working. what did i do wrong?

Loss of 3G connection post ICS stunner 4.5

Hey guys,
i recently rooted and flashed my sgn with ICS stunner 4.5 following the instructions found in these forums. Its been successful apart from the lack of any data connection (3g/H+). I can call and text just fine, but even though I've activated all radios on the euphoria settings no luck...
I searched around and know the solution to be flashing a different modem files, but i do not know which one is suitable: i have an international sgn and im in India if that information is useful.
Thanks in advance

I just flashed 5.0 coming from 4.5 and i have network issues too. i can share my internet data conx via wireless tethering but cannot use the same internet on my galaxy note (host device)..i can call.etc but cant browse the internet or even login into my google account. thr signal icon is GREY in colour instead of BLUE.please help.

Maybe stupid question, but worth a shout. APN settings?

my APN settings are correct,everything was working fine while i was on 4.5 but now on 5.0 the 3G/HSPA mobile data is unusable, like i said yea,i can do wireless tethrering FROM the NOTE to other devices BUT i just can't use my mobile data on the note itself..could it be an issue with something obvious im not seeing? please help guys.

I had audio issues with 4.5 and went back to 4.3. But I did not have issues with my data connection with 4.5. I'm currently enjoying 5.0.
The first post in Stunner mentions that 5 is a major upgrade. To me, that means a complete fresh install is required. I re Odin Mobiled the ICS repack, CWM installed the Stunner 5 zip, entered my broadband APN and reinstalled my apps with Titanium. Sofar, no issues and data is working fine, both wifi and 3G/H/H+.

same problem here, 4.5 H+ with good connection. Here its greyed out with no data whatsoever, just wifi.

@All - Try this-
Try doing a clean install. Start from flashing the cf-repack LP1 through Mobile Odin keeping all the options in Everroot checked. Reboot and let that rom settle. Then reboot in recovery and then wipe cache and data and then flash ICS Stunner 5.0 and immediately after the LP6 modem (with rebooting) Then wipe cache and dalvik and data again and then reboot.
Hope this helps! Hit thanks if you want

Finally. OK. No matter how many times u reboot, it won't work. U have 2 go to settings and mobile networks and see your access points. I had a different one when I was in 4.5 which gave me perfect access to mobile internet network but the one in 5.0 was completely different, all u have to do is revert back to 4.5 copy the access point APN details and then in 5.0 make a new APN with the exact same details. Hope this helps you. Don't forget to use the thanks button
Sent from my GT-N7000 using XDA

hey guys,to ALL experiencing the same 3G issues/mobile data issues i experienced...this is how i fixed mine.
---> the APN settings i used/had with 4.5 were ''almost'' the same..but i noticed a ''slight'' difference in my APN TYPE. it was changed from ''internet'' to ''default'' (depends on ur network provider though),plus i was using proxy settings while on 4.5 so what i did is NOT to change ANYTHING else in 5.0 APN settings...ONLY deleted the PROXY address and PORT (8080)...saved the updated settings - finito!
so the problem is in APN settings,if you use a proxy as part of the settings just delete the proxy & port,save the settings then u should see the grey signal bar turn blue automatically...i hope this is helpfull to all.

big thanks
king, thanks a lot, your method worked for me very well

abhisahara said:
@All - Try this-
Try doing a clean install. Start from flashing the cf-repack LP1 through Mobile Odin keeping all the options in Everroot checked. Reboot and let that rom settle. Then reboot in recovery and then wipe cache and data and then flash ICS Stunner 5.0 and immediately after the LP6 modem (with rebooting) Then wipe cache and dalvik and data again and then reboot.
Hope this helps! Hit thanks if you want
Click to expand...
Click to collapse
hi friend, sorry for bother you, my phone runs great with ics stunner 5, but have a problem, wifi does not work, i cant find networks list, it seems im only connected by 3g
im doing something wrong? im i so stupid that cant find network list? LOL
sorry for asking, all works great but have that problem
thanx in advance

CM 7 rom change and no 3g+mms

Ladies and gents;
So i changed my rom a few days ago for the CM7.2 thanks to a guide on here, and it really impressed me in terms of performance and the whole package.
Problem is, i can't seem to connect to 3g, and cant seem to create any apn's either, device just doesnt do anything when i click on create new apn!
I have made sure that the baseband is on the right selection and so are my network settings...
I have a motorola milestone that used to be locked to TELUS and is now unlocked and using FIDO

rolley said:
Ladies and gents;
So i changed my rom a few days ago for the CM7.2 thanks to a guide on here, and it really impressed me in terms of performance and the whole package.
Problem is, i can't seem to connect to 3g, and cant seem to create any apn's either, device just doesnt do anything when i click on create new apn!
I have made sure that the baseband is on the right selection and so are my network settings...
I have a motorola milestone that used to be locked to TELUS and is now unlocked and using FIDO
Click to expand...
Click to collapse
BuMP!!
more problems, lock from volume stopped working and home shortcut stopped working also....kidna of acting up, already reset dalvik cache and normal cache,...

rolley said:
BuMP!!
more problems, lock from volume stopped working and home shortcut stopped working also....kidna of acting up, already reset dalvik cache and normal cache,...
Click to expand...
Click to collapse
Its possible that you might have just had a bad installation. Id recommend you backup your data and apps, go into recovery preform a factory reset, wipe all data and cache, and re-install the CM 7.2 ROM. I have had similar problems to what your having in the past when installing new versions of CM and most of the time re-installing the ROM did the trick.

shimp208 said:
Its possible that you might have just had a bad installation. Id recommend you backup your data and apps, go into recovery preform a factory reset, wipe all data and cache, and re-install the CM 7.2 ROM. I have had similar problems to what your having in the past when installing new versions of CM and most of the time re-installing the ROM did the trick.
Click to expand...
Click to collapse
i tried just doing a dalvik reset and all data+cache, it worked for the volume wake and the rest, but still no 3g connection

A simple battery pull may work.
Sent from my SCH-I535 using xda premium

rolley said:
i tried just doing a dalvik reset and all data+cache, it worked for the volume wake and the rest, but still no 3g connection
Click to expand...
Click to collapse
I had the same problem with both 3G and 2G as well. I had to manually add APN in Settings>Wireless and Network>Mobile Network>Access point names
It works fine now, even when switching from 2G to 3G while connection is active. CM7 7.2.2

No Data On Cyanogen or RR

After unlocking and rooting my stock system, it still worked fine, but I wanted more features so I went to a custom rom.
Neither CM12.1 or RR had mobile data for Verizon.
When I flashed by TWRP backup of /system, I had data again.
According to 6Binford, my APN settings are correct.
Thanks!

If you upgraded from something other than the most recent -44 build, I think you need to update the radio. You can find that in the official CM thread for the Turbo.

I've tried flashing radio files but still no data.

I've also noticed this notification every now and then, even though I am in an area where data works perfectly fine on stock ROM, and even though before this pops up I still had no data:
Data roaming
----------------------
You've lost data connectivity because you left your home network with data roaming turned off.