Develop Bugs

Help! No lte after flashing!

After flashing cm10 m2 on a galaxy s3, the phone no longer has lte on it and has been constantly switching between hspa and 3g. I've tried changing APN setting but that didnt help.
Someone please help me get lte back on this phone thanks!
Sent from my Nexus 4 using xda app-developers app

Did you try using your data connection? Usually it'll drop back from LTE when you're not using it to save battery.

OP, please read this: Click me!
Worked for me each time I flashed a different AOSP ROM and I'm in an area of spotty LTE coverage.

I am still having issues with this despite that other link. It was working fine right before the flash... Any other ideas as to how to get my data back. .. What "Network Mode" should I be in? I have 2 choices that look the same...Neither of them are working though...
P.S. I have no Data at ALL... Is that normal. I am using CM10 and flashed with GooManager

Do you still have your IMEI?

3G download problem. HELP!!!!!

I have suddenly been having problems with my 3g. I look at the symbol in the status bar and it will upload but it will not download. It's almost like the code is stuck in a loop. It will randomly start to work again for awhile and then act up later. I have wiped dalvik, cache, and I even reflashed my ROM (FREE GS3). I updated profile and PRL. That was even a problem because I would get an error since it wouldn't download. Before I flash back to stock and call sprint, does anybody have any ideas? One other note. I have driven through LTE areas and both downloads and uploads work with no problem.
Sent from my SPH-L710 using xda app-developers app

Have you tried going back to complete stock unroofed.
Sent from my SPH-L710 using Tapatalk 2

Not yet. I'm trying to see what else I can do first
Sent from my SPH-L710 using xda app-developers app

Before reflashing call Sprint and see if they are doing tower improvements, this can cause that when they are working in things

I'm going to flash stock and unroot to see if that helps. I work 75 miles from my house and have experienced the problem at homd and at work so I'm pretty sure it's not a tower issue.
Sent from my SPH-L710 using xda app-developers app

ReppinTheSouth said:
I'm going to flash stock and unroot to see if that helps. I work 75 miles from my house and have experienced the problem at homd and at work so I'm pretty sure it's not a tower issue.
Sent from my SPH-L710 using xda app-developers app
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Click to collapse
Try updating PRL and Profile then restart the phone? That may help, I mean if it does then you just saved like an hour of resetting and restoring. If it doesn't then you just wasted maybe 2 minutes.

porshce2 said:
Try updating PRL and Profile then restart the phone? That may help, I mean if it does then you just saved like an hour of resetting and restoring. If it doesn't then you just wasted maybe 2 minutes.
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Click to collapse
I've tried this with the exception of rebooting my phone right afterwards. I just updated my PRL but I could not update my profile. I got an error. I'm running out of options
I appreciate everybody's help though.

ReppinTheSouth said:
I've tried this with the exception of rebooting my phone right afterwards. I just updated my PRL but I could not update my profile. I got an error. I'm running out of options
I appreciate everybody's help though.
Click to expand...
Click to collapse
This happens to my wife all the time on her evo lte, trying again 15 to 20 minutes later usually fixes it so she can update profile and prl
Sprint GS3 FAQ THREAD

Happens to me when I shut off data for any length of time....I just reboot...and it works fine

I called Sprint and they couldn't fix it. I switched the network mode to CDMA from CDMA/LTE and it worked flawlessly. I don't know what that means but something told me my LTE and 3G weren't playing nicely. Whenever I go through a 4G area, it works to perfection. Then I get back in a 3G area and back to the same old thing.
I forgot to mention I flashed to stock unrooted and it seemed to function better but the problem still existed.

ReppinTheSouth said:
I called Sprint and they couldn't fix it. I switched the network mode to CDMA from CDMA/LTE and it worked flawlessly. I don't know what that means but something told me my LTE and 3G weren't playing nicely. Whenever I go through a 4G area, it works to perfection. Then I get back in a 3G area and back to the same old thing.
I forgot to mention I flashed to stock unrooted and it seemed to function better but the problem still existed.
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Click to collapse
I have the same problem I have no idea what to do. I have a custom ROM the only way I get it to work is when I toggle Data on and off really fast. I didn't try the CDMA only though. Either way it's no excuse why our phone's are acting like this.

There was a DATA_HANDOFF.ZIP floating around somewhere....it was made for AOSP but if you make a backup and flash it, it might do some good

I had the same problem. In your phone key pad enter ##72786#. Its going to do hands free activation, prl update, profile update, firmware update (at that point you can cancel)
Sent from my SPH-L710 using xda premium

ReppinTheSouth said:
I called Sprint and they couldn't fix it. I switched the network mode to CDMA from CDMA/LTE and it worked flawlessly. I don't know what that means but something told me my LTE and 3G weren't playing nicely. Whenever I go through a 4G area, it works to perfection. Then I get back in a 3G area and back to the same old thing.
I forgot to mention I flashed to stock unrooted and it seemed to function better but the problem still existed.
Click to expand...
Click to collapse
Same thing started happening to me a couple weeks ago. Tried everything. Only "fix" was setting network to CDMA only. Frustrating.
Sent from my SPH-L710 using xda app-developers app

no 4g after flashing a couple new roms?

i flashed cm10 and only got edge service, and i know i get 4g in my area. then i went to cm10.1 still with edge. i then went back to the stock rom and still on edge (stock had 4g before i flashed cm10) any ideas on how to fix it?
Sent from my SGH-T999 using Tapatalk 2

prettyflybrownguy said:
i flashed cm10 and only got edge service, and i know i get 4g in my area. then i went to cm10.1 still with edge. i then went back to the stock rom and still on edge (stock had 4g before i flashed cm10) any ideas on how to fix it?
Sent from my SGH-T999 using Tapatalk 2
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Dumb question but have you checked your network settings. If you backed up your stock rom restore it and see if you get 4g again

http://forum.xda-developers.com/showthread.php?t=1801997
Just make sure you follow all THREE steps. People have a habit of completing one step of injecting the IMEI and thinking that's all you need to do.
Sent from my Galaxy Nexus using xda premium

Checked EVERYTHING.
Sent from my myTouch_4G_Slide using Tapatalk 2

I really don't understand how to do that.. :/
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prettyflybrownguy said:
I really don't understand how to do that.. :/
Sent from my myTouch_4G_Slide using Tapatalk 2[/QUOTE
Hmm ok check your apn its under mobile networks it should have tmobile with the box checked if not then that could be your problem. Worst case scenario if you know odin use it to flash back to stock
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My apn is set to T-Mobile. But I lost my imei btw.
Sent from my myTouch_4G_Slide using Tapatalk 2

prettyflybrownguy said:
I really don't understand how to do that.. :/
Sent from my myTouch_4G_Slide using Tapatalk 2
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Trust me bro, you can. Just follow through slowly and you'll fine. To make life easier, go back to Touch Wiz and just take it line by line.
You were capable of rooting and flashing, you can pull this off.
Sent from my Galaxy Nexus using xda premium

Thanks for the motivation, I'm gonna do it tomorrow.
Sent from my myTouch_4G_Slide using Tapatalk 2

Also lost 4G
After rooting and flashing Dev-3.22.1540.1-Stock-Rooted-DE-ODEX.zip ROM I lost 4G. The best I could manage is 3G. Now I flashed latest Viper ROM, but still no 4G.
Any idea why?
(I checked APN, it's something else).

ivuzmek said:
After rooting and flashing Dev-3.22.1540.1-Stock-Rooted-DE-ODEX.zip ROM I lost 4G. The best I could manage is 3G. Now I flashed latest Viper ROM, but still no 4G.
Any idea why?
(I checked APN, it's something else).
Click to expand...
Click to collapse
Imei intact?
Sent from my SGH-T999 using Tapatalk

I'm having the same issue. When I go back to my orginial rooted backed up CWM KK 4.4.2 3G works perfect. Flashed a new ROM APN, IME and even checked *#*#info#*#* all are good. I just can't get 3G.
Any ideas?

This is rom issues/kernel most likely try to Odin please check your provider as well
Some roms/kernels break the service you may use unfortunately

No more 4g

I flashed a couple modems a while back to see if I could find the best one. I don't have 4g where I live but this weekend I'm staying in an area where I've gotten 4g before. My wife currently shows as connected to 4g but I can only get 1-2 bars 3g. I flashed a different modem to see if that was the problem and when I rebooted I had no imei. I restored my twrp backup of stock and it booted and connected to the network still just 3g though. I restored a twrp backup of carbon rom and again no imei. I restored my stock backup again then factory reset and clean flashed carbon. I can get 3g again but still no 4g.
Any ideas?
Sent from my SPH-L900 using Tapatalk 2

Are you still in that same area getting no 4g or did you go different places that your wife had 4g and you didn't?

Same general area. She has 4g everywhere we've been today but I cant get it at all.

Sounds like it cause u lost your Imei number.
Sent from my SPH-L900 using xda premium

That's what I was wondering. Any way I can find out?
Sent from my SPH-L900 using Tapatalk 2

Unlocked att note 2 reception issues on t mobile

This is my first post on xda. Ive searched high and low for a solution. I get very poor reception on my note despite my friends having full bars. I understand I wont get full speeds, but shouldnt I atleast get consistent enough reception to talk and text? Ive also popped in an att sim in to confirm it wasnt hardware.....consistent full bars. Ive tried t mobile roms (jedi x), modem flashes and factory resets. This is really stumping me so I would be very gratefull for any advice or suggestions.
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I also had my t-mobile sim replaced to confirm it wasnt the sim card. I also popped my friends sim who had full bars on his s3 in my note. He also had little to no reception
Sent from my SAMSUNG-SGH-I317 using xda app-developers app

I have the same issue. I'm wondering if flashing a tmobile modem will fix the issue.

baseddaddyd said:
I also had my t-mobile sim replaced to confirm it wasnt the sim card. I also popped my friends sim who had full bars on his s3 in my note. He also had little to no reception
Sent from my SAMSUNG-SGH-I317 using xda app-developers app
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Click to collapse
If your phone is a AT&T then try this it's the newest modem
release! :thumbup:
http://forum.xda-developers.com/showthread.php?t=2274854
varem said:
I have the same issue. I'm wondering if flashing a tmobile modem will fix the issue.
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Click to collapse
NEVER flash another carrier modem because all you end up with is boot loops!! Fyi
Try the same as^^^^^^^^^^.
Sent from my SAMSUNG-SGH-I317 using Xparent SkyBlue Tapatalk 2

This worked for me....
baseddaddyd said:
This is my first post on xda. Ive searched high and low for a solution. I get very poor reception on my note despite my friends having full bars. I understand I wont get full speeds, but shouldnt I atleast get consistent enough reception to talk and text? Ive also popped in an att sim in to confirm it wasnt hardware.....consistent full bars. Ive tried t mobile roms (jedi x), modem flashes and factory resets. This is really stumping me so I would be very gratefull for any advice or suggestions.
Sent from my SAMSUNG-SGH-I317 using xda app-developers app
Click to expand...
Click to collapse
I was plagued with weak reception, even got AT&T to send me a MicroCell as calls were dropping at home. I tried rom after rom going from Android 4.1.1 to 4.4.2 and they all had bad reception. I read about people putting wires and things in the external antenna port, but decided against that as I also read that LOTS of people damaged their phone doing that and had to replace the phone. Well, I decided to wipe the phone and normally I wipe Dalvic Cache, Cache, System and Data, then install a new rom...but this time I was going to go back to the original recovery and rom and start all over so I wiped the Internal Cache as well this time, BUT I could not find a stock recovery to install, so I went back to 4.1.1...to my surprise, once I rebooted my reception was strong! I then went back to my nandroid backups and loaded various roms...they were all strong!
Point is, make sure if you are having reception problems to wipe the phone completely (remove your SDCard if you don't want to lose what you have on that) then try reinstalling the rom and see if your reception comes back. Mine has been solid since I wiped the Internal Cache with TWRP and this is the longest I have had good reception in a long time. I am back on Android 4.4.2 and my reception is working great again!

Flash your carrier modem people....done...
And that can even mean a 2 year old modem ....but...
It "must" be the carrier you currently use....g
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