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Every time I flash a custom rom I lose 3g.

Every time I flash a rom I lose 3g. I've tried all the touch wiz roms like wanam and pyrana and everything works except 3g. It goes down to 1x. I still have data just not the 3g speed. Any ideas?
Sent from my SPH-L720 using xda premium

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shaggsdclown said:
Every time I flash a rom I lose 3g. I've tried all the touch wiz roms like wanam and pyrana and everything works except 3g. It goes down to 1x. I still have data just not the 3g speed. Any ideas?
Sent from my SPH-L720 using xda premium
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hi to help you out here goes,
its more than likely that when your flashing roms this changes your baseband (ie modem/radio)
to fix this you will need to remember what the original baseband was prior to flashing custom roms (ie when it was stock rom)
if you cant remember try phoning your providor who should be able to tell you.
then simply find the corresponding modem here on xda and wheather its a cwm file (.zip) or odin file (.tar.md5) flash that and 3g should be restored.
however which network are you on and do you have a sg4 (reason being is that its an lte phone built for faster web speed so if your seeing a (dc or 4g) all is well.
also you may have your settings incorrect in wireless and network/more/mobile networks

Yeah I'm on the sprint network and have the 9505. So it's capable of 4g lte but that's not available here yet. It is in Detroit and when I've been closer to there I've seen it switch to 4g but it's always on 3g down here in Ohio. I think it's kernel related as I was messing around with the stock rom and different mods like transparent status bar and different toggle icons and I figured I might as well flash wanams new version of the Adam kernel 1.4 and I lost my data connection. On the stock rom. I restoredit and it was back.
Sent from my SPH-L720 using xda premium

No LTE after flashing cm 10.1

I've noticed that my phone is no longer able to connect to the LTE towers that are available to me.
I also noticed that my phone uses "1x" when LTE towers are available (so that's fun)
3g and 2g work just fine but LTE refuses to work
Here is what I've tried:
Reinstall the rom
Do a clean install of the rom
Play around with the apn and network mode
Restart my phone
Update the firmware
Update to the latest nightly
What I'm going to do:
Install the stock rom
And/or install the Google play edition rom
Any ideas why LTE isn't working? And does it work on anyone else's phone?
Sent from my SPH-L720 using xda app-developers app

stealer0517 said:
I've noticed that my phone is no longer able to connect to the LTE towers that are available to me.
I also noticed that my phone uses "1x" when LTE towers are available (so that's fun)
3g and 2g work just fine but LTE refuses to work
Here is what I've tried:
Reinstall the rom
Do a clean install of the rom
Play around with the apn and network mode
Restart my phone
Update the firmware
Update to the latest nightly
What I'm going to do:
Install the stock rom
And/or install the Google play edition rom
Any ideas why LTE isn't working? And does it work on anyone else's phone?
Sent from my SPH-L720 using xda app-developers app
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Click to collapse
I remember when i would flash CM10 and any CM10 based roms on my sprint Note 2 LTE wouldnt work it was broke on CM10 based roms well any non TW roms one thing that sometimes would fix the issue is reflashing a TW rom updating prl and profile then going right to cm10 but it would lose lte after a reboot for me still.

Also try a different kernel. Works for me when I only have 3g in an LTE area
Sent from my SPH-L720 using xda premium

Dial *#*#4636#*#* tap phone info and make sure your phone is in LTE/CDMA auto prl mode. Like this.
Sent from my SPH-L720 using xda premium

[Q] (Q) 4g or H+ with Three in UK

Hi,
I have LG G2 D802 Kitkat. I have rooted the phone and intalled xposed modules as well as G2 Tweakbox. However I have relised I not getting H+ or 4g (im on Three in UK) because my G2 has D80220a-AME-XX. What stock version should flash to get 4g and will my data and apps stay or will they be wiped. Please someone could they answer this question.

desiresiscool said:
Hi,
I have LG G2 D802 Kitkat. I have rooted the phone and intalled xposed modules as well as G2 Tweakbox. However I have relised I not getting H+ or 4g (im on Three in UK) because my G2 has D80220a-AME-XX. What stock version should flash to get 4g and will my data and apps stay or will they be wiped. Please someone could they answer this question.
Click to expand...
Click to collapse
This is the official lg server and will download your region's rom. You'll have lte if your carrier supports it. Flashing a kdz will wipe your data though.

Art Vanderlay said:
This is the official lg server and will download your region's rom. You'll have lte if your carrier supports it. Flashing a kdz will wipe your data though.
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Which EUR-XX rom should I choose, the site is not giving any download

desiresiscool said:
Which EUR-XX rom should I choose, the site is not giving any download
Click to expand...
Click to collapse
If you cant find it there just use this. It's an unbranded uk d80220c rom. Flash tools here.

desiresiscool said:
Hi,
I have LG G2 D802 Kitkat. I have rooted the phone and intalled xposed modules as well as G2 Tweakbox. However I have relised I not getting H+ or 4g (im on Three in UK) because my G2 has D80220a-AME-XX. What stock version should flash to get 4g and will my data and apps stay or will they be wiped. Please someone could they answer this question.
Click to expand...
Click to collapse
I am on Three as well. To get 4g you have to be in one of the 4g areas and there are not many of them at the moment. I also bought an LG G2 which came with an AME-XX ROM, however I still got H+ connection (there was no 4g in my area anyway). I then flashed the Optimus G3 ROM and still got H+ signal but when I went into a 4g area I got 4g connection too.
If I were you, I would just flash the Optimus G3 ROM (or the Cloudy G3 ROM).
You can try flashing it without wiping and it may work (make a full NANDROID backup first). Alternatively, backup your app using an app such as Titanium backup and then restore them all (with the data) after flashing the new ROM.

prowsterz said:
I am on Three as well. To get 4g you have to be in one of the 4g areas and there are not many of them at the moment. I also bought an LG G2 which came with an AME-XX ROM, however I still got H+ connection (there was no 4g in my area anyway). I then flashed the Optimus G3 ROM and still got H+ signal but when I went into a 4g area I got 4g connection too.
If I were you, I would just flash the Optimus G3 ROM (or the Cloudy G3 ROM).
You can try flashing it without wiping and it may work (make a full NANDROID backup first). Alternatively, backup your app using an app such as Titanium backup and then restore them all (with the data) after flashing the new ROM.
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Click to collapse
Thanks for your advice I'll try to do something about it

Before I flash I was wanting to ask what is ro.build.target_country for uk with three network

desiresiscool said:
Before I flash I was wanting to ask what is ro.build.target_country for uk with three network
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Click to collapse
I don't know. I've found that you don't actually change it as it works anyway. So for me it is ro.build.target_coountry=COM

[Q] 3G dont work on Cloudy3G (VS980)

Phone is LG VS980 (Verizone G2)
If i install from VS98024A to CloudyG3 1.3 (without full wipe) 3G is enabled, but i have to many crash in programs (SMS dont work,Gallery, Camera Gallery,RemoteControll and others).
If i do wipe Davlik Cache, cache, system and data i have stable CloudyG3 1.3 without crashing, but a cant use EVDO. 3G dont start. Data Icons is on, phone write "Data Enabled" but EVDO hasnt.
Try write EVDO setting in mangust 1.09b, DFS, QPST - zero rezults
Anybody has some idea?
PS: Sorry for bad english

Hey,
You will need to do a clean install (full wipe). You should not install CloudyG3 on top of the stock VS980 ROM.
Regarding the 3G issue, you will need to do the following:
Enable roaming (Verizon doesn't bill you for roaming in North America).
Edit your build.prop to include these:
ro.build.target_country=US
ro.build.target_operator=vzw
ro.carrier=vzw
There are apps in Google Play store that can be used to edit your build.prop. I personally use this app called "BuildProp Editor".
Sent from my LG G2 running CloudyG3.

xstahsie said:
Hey,
You will need to do a clean install (full wipe). You should not install CloudyG3 on top of the stock VS980 ROM.
Regarding the 3G issue, you will need to do the following:
Enable roaming (Verizon doesn't bill you for roaming in North America).
Edit your build.prop to include these:
ro.build.target_country=US
ro.build.target_operator=vzw
ro.carrier=vzw
There are apps in Google Play store that can be used to edit your build.prop. I personally use this app called "BuildProp Editor".
Sent from my LG G2 running CloudyG3.
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Its not working for me :crying:

MFKilla said:
Its not working for me :crying:
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What do you mean? Can you elaborate? Which part is not working for you? Where are you stuck at?
Sent from my LG G2 running CloudyG3.

MFKilla said:
Its not working for me :crying:
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Click to collapse
did you flash the radio? or modem?

Try to
- Delete LteConfigs.apk and LteConfigs.odex in system\app then reboot.
If that doesn't work then try this.
- Follow this guide: http://forum.xda-developers.com/show...postcount=1688

[Q] Boost flashed no 3G when on custom ROM

My S4 is flashed to Boost Mobile. Whenever I install a custom ROM I get no 3G or 3G appears for no more than 2 seconds then its 1X. I nandroid backuped to stock and same problem so then I installed a Stock Deodexed NG2 Refitted ROM and right when this ROM boots Boost ID pops up it installs apps and puts it to my boost homescreen setting and my 3G and everything works fine. APN settings are the same when I switch ROMs so I have no idea what the problem is. I want to install a custom ROM like NegaLite but I am stuck at this point.

Have you tried using an app like apn backup and restore?
What are your apn settings on aosp? Are you on the latest modem firmware?
Sent from my SPH-L720 using XDA Free mobile app

koivth said:
Have you tried using an app like apn backup and restore?
What are your apn settings on aosp? Are you on the latest modem firmware?
Sent from my SPH-L720 using XDA Free mobile app
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Click to collapse
Right now I am on NG2 4.4.2 Stock deodexed NG2 Refitted ROM. This is the only ROM that my 3G works. My 3G worked on stocked rooted then I went to Negalite didn't work. So I nandroid to my stock rooted and 3G didn't work anymore so I tried this ROM i currently am on and it works.
My apn settings are all Sprint APNs and everything works fine and when I flash a ROM my APns are still the same but 3g is ****. I tried using APN backup and restore on this ROM it lets me disable ICS Check but when I install a different ROM that doesn't work so I can't use it. I even tried moving it to the system. I appreciate your reply

i7vSa7vi7y said:
Right now I am on NG2 4.4.2 Stock deodexed NG2 Refitted ROM. This is the only ROM that my 3G works. My 3G worked on stocked rooted then I went to Negalite didn't work. So I nandroid to my stock rooted and 3G didn't work anymore so I tried this ROM i currently am on and it works.
My apn settings are all Sprint APNs and everything works fine and when I flash a ROM my APns are still the same but 3g is ****. I tried using APN backup and restore on this ROM it lets me disable ICS Check but when I install a different ROM that doesn't work so I can't use it. I even tried moving it to the system. I appreciate your reply
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Click to collapse
Are you sure it's true 3g on the refitted ROM. Sometimes it shows 3g but its really 1x. You can check under about phone status. 3g normally works for me as soon as I flash..no need to add apns. I only have to edit mmsc in APN settings to get MMS.

That's what usually happens to me. I installed Sac's ROM and everything works and I actually really like this ROM so I'm going to stay on here. I'm still trying to figure out how to remove this data stat notifiation or something on the top right and also how would I remove a NO SIM notification since I'm on Boost now I don't need a SIM