4G LTE issue not working - Xperia SP Q&A, Help & Troubleshooting

I've got a big problem with my 4G connection... I have WIND (IT) as carrier
When I activate 4G mode, the icon appears on the notification bar, but the connection doesn't work.
I have CM11 and I tried different ROMs, also tried to relock bootloader and return to stock FW, but nothing changed
The APN is correct and it works perfectly with 3G connection

I have the same problem. 3G and LTE are not working. The signal in status bar is showing that there is signal but technically there isn't.
I talked to my network carrier, the told me to change my sim card but the problem remains.

acceleron said:
I have the same problem. 3G and LTE are not working. The signal in status bar is showing that there is signal but technically there isn't.
I talked to my network carrier, the told me to change my sim card but the problem remains.
Click to expand...
Click to collapse
Any devices are only capable of connecting to a specific set of bands. Please make sure the place of yours / carrier supports and make use of the bands that XSP supports.
This should be a rare case, since XSP supports a handful of 4G LTE bands. Therefore, this reply of mine is a useless post. Lol
You might want to check your APN to see if it is correct.

Everything with the APN is correct. The problem is with the phone.
Even after flashing sony official stock rom the problem continues...

acceleron said:
Everything with the APN is correct. The problem is with the phone.
Even after flashing sony official stock rom the problem continues...
Click to expand...
Click to collapse
Well then i have no idea at all

I think it's hardware problem.

Related

Roaming

Hi,
Have a big problem in that whenever I put a rom on my new Tilt 2 (which I am running on the new HSPA Bell network). My phone thinks it is roaming.
This is a real pain and I can't seem to find away around the problem.
Please can somebody think of something I might be missing?
Thanks!!
pcuz said:
Hi,
Have a big problem in that whenever I put a rom on my new Tilt 2 (which I am running on the new HSPA Bell network). My phone thinks it is roaming.
This is a real pain and I can't seem to find away around the problem.
Please can somebody think of something I might be missing?
Thanks!!
Click to expand...
Click to collapse
Test a few radios and see what happens
smokestack76 said:
Test a few radios and see what happens
Click to expand...
Click to collapse
Ok will give that a try. Do I have to change th rilphone.dll as well?
No i never have and they flash just fine
smokestack76 said:
No i never have and they flash just fine
Click to expand...
Click to collapse
Thanks I will give it a go and let you know how I get on.
pcuz said:
Thanks I will give it a go and let you know how I get on.
Click to expand...
Click to collapse
Ok so tried a bunch of different radios but still get the same problem.
Any ideas folks??
pcuz said:
Hi,
Have a big problem in that whenever I put a rom on my new Tilt 2 (which I am running on the new HSPA Bell network). My phone thinks it is roaming.
This is a real pain and I can't seem to find away around the problem.
Please can somebody think of something I might be missing?
Thanks!!
Click to expand...
Click to collapse
Are you sure its roaming and not mistaken the icon for something else? Also, if you are indeed roaming, which network is it? AFAIK, in ON, there's only 2 HSPA network Rogers/Fido or Bell/Telus. Who is your provider?
mikron15 said:
Are you sure its roaming and not mistaken the icon for something else? Also, if you are indeed roaming, which network is it? AFAIK, in ON, there's only 2 HSPA network Rogers/Fido or Bell/Telus. Who is your provider?
Click to expand...
Click to collapse
So I have the icon telling me that I am roaming and all the application warn me before they download data that I am roaming as well (which is a right pain!!).
I am on the new Bell HSPA network.
Any ideas?
roaming..
ok .. this is my experience about this problem ..
first my home base is Netherlands ! and im using Telfort network on my nokia .. buat the last 3 year .. Telfort using KPN Network .. if you turn ON the phone .. it will display Telfort .. but a few second it will change to KPN ...
maybe.. your operator also using another network...
if I put my Telfort sim to TP2 it will display Telfort but with with ROAMING icon !!!
cheers
indra9110
indra9110 said:
ok .. this is my experience about this problem ..
first my home base is Netherlands ! and im using Telfort network on my nokia .. buat the last 3 year .. Telfort using KPN Network .. if you turn ON the phone .. it will display Telfort .. but a few second it will change to KPN ...
maybe.. your operator also using another network...
if I put my Telfort sim to TP2 it will display Telfort but with with ROAMING icon !!!
cheers
indra9110
Click to expand...
Click to collapse
Bell have their own network here so I dont think that could be the problem. I also have a Omnia 2 and an Iphone 3Gs that dont have this problem.
Also just tried to manually join the Rogers network and as I thought it would not let me connect.
It is only on the tilt2 after I flashed a new ROM onto it.
Thanks for the idea though.
Anybody else?
pcuz said:
Bell have their own network here so I dont think that could be the problem. I also have a Omnia 2 and an Iphone 3Gs that dont have this problem.
It is only on the tilt2 after I flashed a new ROM onto it.
Thanks for the idea though.
Anybody else?
Click to expand...
Click to collapse
EDIT: read this first and then try the following suggestion
Try setting in the TP2 band selection to only HSPA and see what happens. Since bell has no GSM, and if your phone is set to 2G mode only, it's falling back on Rogers/Fido, hence, the roaming.
Start>>Settings>>Personal>>Phone>> Goto "Band" tab>>Set the GSM/UMTS band to "GSM (1900+850) + UMTS(1900+850).
Play around with the Network type by switching to GSM only or CDMA or leave it on Auto.
FYI Rogers/Fido and Bell/Telus HSPA network runs on 850/1900 band.
Food for thought....
Also another thing to consider, considering that Bell/Telus HSPA network is new, I thought i read somewhere you have to get your device "added" to their new HSPA system. Right now, only new sign-up's gets on the new HSPA network. In other words, your phone is trying to get on Bell HSPA network, but Bell rejects it since it's not in their system, so your phone hop's onto next on the list, either roaming on Rogers HSPA or Rogers GSM.
P.S: You might find better response over here
mikron15 said:
EDIT: read this first and then try the following suggestion
Try setting in the TP2 band selection to only HSPA and see what happens. Since bell has no GSM, and if your phone is set to 2G mode only, it's falling back on Rogers/Fido, hence, the roaming.
Start>>Settings>>Personal>>Phone>> Goto "Band" tab>>Set the GSM/UMTS band to "GSM (1900+850) + UMTS(1900+850).
Play around with the Network type by switching to GSM only or CDMA or leave it on Auto.
FYI Rogers/Fido and Bell/Telus HSPA network runs on 850/1900 band.
Food for thought....
Also another thing to consider, considering that Bell/Telus HSPA network is new, I thought i read somewhere you have to get your device "added" to their new HSPA system. Right now, only new sign-up's gets on the new HSPA network. In other words, your phone is trying to get on Bell HSPA network, but Bell rejects it since it's not in their system, so your phone hop's onto next on the list, either roaming on Rogers HSPA or Rogers GSM.
P.S: You might find better response over here
Click to expand...
Click to collapse
Thanks for the detailed response.
I dont think I am on the Rogers network as I get the Bell operator logo appear and the phone stays on 3G (as I cant drop to Edge because Bell dont have it on their network).
Also checking my online billing from the past few days I would expect to see some nasty roaming charges which I dont have.
Finally I also have a Jailbroken Iphone and that works on the network fine without any problems.
Its just very weird!!
Just tried to connect to the Rogers network manually and it will not let me connect. So it must be something wierd on the device.
Oh, it does show Bell operator logo. I thought the phone was registering on another entwork other than Bell.
Hmm, since you are not incuring roaming charges, only thing I can think of, is the network list that comes within the ROM classifies Bell as CDMA and not updated to reflect it supports HSPA. So it reads the network id as Bell and network type as HSPA and thinks its roaming? I dunno, i could be wrong lol! ::shrugs::
mikron15 said:
Oh, it does show Bell operator logo. I thought the phone was registering on another entwork other than Bell.
Hmm, since you are not incuring roaming charges, only thing I can think of, is the network list that comes within the ROM classifies Bell as CDMA and not updated to reflect it supports HSPA. So it reads the network id as Bell and network type as HSPA and thinks its roaming? I dunno, i could be wrong lol! ::shrugs::
Click to expand...
Click to collapse
Make sense to me
I guess I can live with it if I need to. Does anybody know of a way to force the device not to flag any messages about roaming?
At least that will make it less annoying.

3g Issue - UNUSUAL

Basically, my N1 when on stock worked perfectly with 3g, yes sometimes it was a bit patchy but it worked. I am using my old blackberry sim (UK), with the internet converted from bberry internet to normal.
Everything was going fine until I put my brother's orange sim in my phone (UK) [he also has a stock nexus, although at the time i was on 5.0.0.3 CM] to see if it was just his phone which had a 3g issue. I never managed to pick up 3g while his sim was in my phone, even though 2 blackberry bolds sitting next to it with orange sims in had perfect 3g.
ANYWAY THATS NOT THE ISSUE.
After replacing my sim in my phone, Ive never since had 3g, ever, even on routes I know the signal is immense.
What I want to know is 1) what would swapping sims have done to the phone, 2) what I can do to possibly reverse it so I can enjoy my 3g again
CM .6
Desire CAM + OC/UV
Cheers
I haven't had this same problem but if I were you I would go to your carrier and get a replacement SIM card. The last time I had a weird issue like this I replaced my SIM and all of a sudden I got pure 3G signals everywhere where I hadn't before. If you get the new SIM and it still doesn't work, try wiping and install a completely different ROM (perferably stock) and see what happens.
Hope this helps!
Sellitus said:
I haven't had this same problem but if I were you I would go to your carrier and get a replacement SIM card. The last time I had a weird issue like this I replaced my SIM and all of a sudden I got pure 3G signals everywhere where I hadn't before. If you get the new SIM and it still doesn't work, try wiping and install a completely different ROM (perferably stock) and see what happens.
Hope this helps!
Click to expand...
Click to collapse
But before I put my brothers sim in my phone, my sim worked perfectly fine, so I was thinking it was more likely to be phone than my sim?
Anyone have any ideas?
his sim seems to have disabled 3g somehow in your phone, though I've never heard me that before. have you gone into the info menu and seen if your 3g is still enabled? *#*#4636#*#* on your dialpad.
WHOOPs, yeah I had it off [while we were testing etc] and sort of forgot :/ Which setting is it meant to be on, GSM/CDMA auto?
you want it to be on WCDMA Preferred.
I've set it correctly now, and am getting 'H'. I didn't actually realise that it is a type of 3g network, however I am SURE It used to say '3g'. UK O2 if it makes a difference.
well H stands for HSDPA which is what some ROMs show. so have you flashed to a different custom ROM? either way you are getting correct high speed network, so no worries. my nexus only says 3G even when i'm on HSDPA.
RogerPodacter said:
well H stands for HSDPA which is what some ROMs show. so have you flashed to a different custom ROM? either way you are getting correct high speed network, so no worries. my nexus only says 3G even when i'm on HSDPA.
Click to expand...
Click to collapse
Yeah, CM 5.0.6, although I did see a real 3g today *strokes phone* goooood boy

[Q] no 4g or lte on stock or custom rom

So I've had this phone for almost a week now and I used to he able to get 4g LTE. But ever since I rooted it, I no longer get more than 3g. I now have bananacakes Holiraider 1.6 but I still don't get any higher than 3g. So my question is how do I get 4g and 4g lte. Oh and if anyone is using that custom Rom, is it possible to get faster than 1512? In his thread it shows you can clock it to 1566. Thanks a bunch I'm kinda new to this!
try dialing *#*#4636#*#* and see what your modem is set to, it should be GSM/WCDMA/LTE auto
you also may have an APN issue, verifiy that your APN is correct, perhaps contact your carrier for the correct APN settings for you phone and plan.
Well I'm now running a custom ROM. The apn is the same as other users and it does say the above. And yes I am in a 4G LTE area
Sent from my HTC Raider X710e using XDA App
Try doing the above and change to LTE only.
Then once you have 4G change it back. It should stay on 4G. I had to do this to get 4G on official rom.
Ok I just tried that but it wouldn't let me to switch it to LTE only. When I did, it switched it back to GSM/WCDMA/LTE auto. I'm just gonna relock my phone and set it back to the original stock rom and format my phone (yes I have the apps and stuff backed up). Because my actual mobile connection fluctuates on and off as well
the phone should be locked into the GSM/WCDMA/LTE setting. If you try to change it from that setting it just returns back. The phone will get instructions from the carrier's base station to tell it whether to be on LTE or just 4G/3G. Using *#*#4636#*#* under phone information, what is listed as the Network type?
bangorang said:
Ok I just tried that but it wouldn't let me to switch it to LTE only. When I did, it switched it back to GSM/WCDMA/LTE auto. I'm just gonna relock my phone and set it back to the original stock rom and format my phone (yes I have the apps and stuff backed up). Because my actual mobile connection fluctuates on and off as well
Click to expand...
Click to collapse
It is locked in GSM/WCDM/LTE auto.
above that option it should tell you the network type. it is about half way between the "run ping test" button and the "Set Preferred Network type" option. Need to know what it says there.
Oh ok I see what you mean, it says HSDPA
make sure that you are in a active LTE area. toggle the radio off and on. the network type should change to LTE if it is available. remember that if you make a phone call your phone will drop back to just 4g/3g and it might take a second for it to switch back to LTE.
I live in Los Angeles so I'm like in the center of the LTE center in Southern California. But for some reason my phone won't get anything higher than 3G, and my actual cellphone reception toggles on and off randomly too.
It worked before. For the first 3 days atleast. And now all of the sudden it wouldn't work, so I rooted it and installed a custom ROM
Try one of WildChilds custom ROMS. LTE works on both and they're tailored to US users.
Sent from my HTC PH39100 using xda premium
if the problem arised before you rooted and rom'd the phone I doubt the rom is the problem. there is always the chance that you have a bad radio.
rft3ch said:
if the problem arised before you rooted and rom'd the phone I doubt the rom is the problem. there is always the chance that you have a bad radio.
Click to expand...
Click to collapse
That's what I'm thinking... What would I do about this?
i would verify your sim with another 4gLTE phone and vice versa.
Hrm... So it could be a Sim card problem eh? Unfortunately there are no other LTE devices for me to get a hold of... Would this be the only way?
it could be. i hope you have pulled battery/sim and then rebooted already. you can verify your phone with a known good sim and verify your sim with a known good phone. I would try your local at&t store. they might be able to help.
bangorang said:
Hrm... So it could be a Sim card problem eh? Unfortunately there are no other LTE devices for me to get a hold of... Would this be the only way?
Click to expand...
Click to collapse
rft3ch said:
it could be. i hope you have pulled battery/sim and then rebooted already. you can verify your phone with a known good sim and verify your sim with a known good phone. I would try your local at&t store. they might be able to help.
Click to expand...
Click to collapse
I have done it many times . Yeah I'm actually going to head over to the at&t store in a few minutes, I'll keep you posted. Thank you so much for your help! rft3ch!
I will be replacing my phone. I replaced the sim card and that wasn't the problem . The rep said that someone else came in with the same problem as well.

Cell signal keeps reverting to 3G

Hi,
So I'm having an issue keeping an LTE signal. I use straight talk with at&t and I can get LTE if I turn the radio on/off, but it will always switch itself over to 3G at some point in the same location. There are apps that can force it to do LTE only which works, but I can't make or receive voice calls over LTE.
Does anyone know how to fix this? This never happened on other phones on the same network. In my specific location I get 2-3 bars of LTE and 4 bars if switched to 3G. I guess it wants to keep using the better signal.
Also at home where I have full signal LTE and H+, it will choose H+ over LTE.
Had same problem. Switched sim slot to the other. 4g again. Try IT?
Did you try different APN settings? I'm guessing you already checked the preferred network option.
Sent from my MIX using Tapatalk
APN settings are good and I can get LTE if I flip the radio on and off...it just always wants to revert back to 3G at some point. Same thing happens in sim card slot 1 or 2
pacattack81 said:
Hi,
So I'm having an issue keeping an LTE signal. I use straight talk with at&t and I can get LTE if I turn the radio on/off, but it will always switch itself over to 3G at some point in the same location. There are apps that can force it to do LTE only which works, but I can't make or receive voice calls over LTE.
Does anyone know how to fix this? This never happened on other phones on the same network. In my specific location I get 2-3 bars of LTE and 4 bars if switched to 3G. I guess it wants to keep using the better signal.
Click to expand...
Click to collapse
Which rom are you on? I remember there's a specific rom that has a bad modem file. Trying updating to the latest version.
Maybe you can solve it by going to APN settings and set APN protocol -> IPv4 and APN roaming protocol -> IPv4 . That worked for me. I had the same issue.
Or try IPv4/IPv6. That's network related and maybe IPv4/IPv6 is correct for you.
I have to set it every time I flash EU or EPIC rom.
Good luck.
did you ever figure this out?
I'm having a similar problem on a Note 4 Global. Only it switches to 3G for a voice call and never switches back.
dennygreen said:
did you ever figure this out?
I'm having a similar problem on a Note 4 Global. Only it switches to 3G for a voice call and never switches back.
Click to expand...
Click to collapse
Firmware update?
james1089 said:
Firmware update?
Click to expand...
Click to collapse
I've updated it, and it's all the same. Once in a great while it will switch over to LTE on its own, but 99% of the time it will just sit on H+ forever even though I know the LTE is fine wherever I go.
I guess this is just how it's going to be.
I finally fixed this by wiping everything in twrp and flashing a newer version of the global stable rom. LTE works fine now, and it doesn't stick on H+ when I make a call anymore.
dennygreen said:
I finally fixed this by wiping everything in twrp and flashing a newer version of the global stable rom. LTE works fine now, and it doesn't stick on H+ when I make a call anymore.
Click to expand...
Click to collapse
That's interesting. I guess Xiaomi fixed the bug in one of the releases. I wonder why you had to wipe everything though. What if we try to flash the latest modem. Is there a link to that? Would that work?
Would modem be the same as firmware? There's a thread on here that has those. None of them did anything for me.
My LTE problem is isn't fixed after all I guess. Once it loses LTE, it still never reconnects to it on its own and goes to H/H+ forever.
I guess the only thing that I've fixed is that it actually switches back to LTE after a phone call.

SM-N950N CSC change

So i bought the N950N version from SK (kt branded) is there any way to change the csc to multi? I live in italy so i need the ITV one. Im asking this becuase the mobile data icon stays on 3G while on my S6E+ chamges to H+ (don't have 4G acrivated because of reasons). The speedtest also shows a big differnce in DL from the 2 phones.
Thanks in advance
DeltaHF said:
So i bought the N950N version from SK (kt branded) is there any way to change the csc to multi? I live in italy so i need the ITV one. Im asking this becuase the mobile data icon stays on 3G while on my S6E+ chamges to H+ (don't have 4G acrivated because of reasons). The speedtest also shows a big differnce in DL from the 2 phones.
Thanks in advance
Click to expand...
Click to collapse
I don't think the CSC change would help you as your issue is with the radio which is in CP file. It is not an icon or preinstalled apps as you have described. There was a speed difference so it is most likely a 3G band compatibility issue.
طوني تبولة said:
I don't think the CSC change would help you as your issue is with the radio which is in CP file. It is not an icon or preinstalled apps as you have described. There was a speed difference so it is most likely a 3G band compatibility issue.
Click to expand...
Click to collapse
I see. Fo you know if theres any chance i can flash an unbtnaded version of the no brand version of the firmware from a N950F? Using root pwrmissions too
DeltaHF said:
I see. Fo you know if theres any chance i can flash an unbtnaded version of the no brand version of the firmware from a N950F? Using root pwrmissions too
Click to expand...
Click to collapse
you can flash a 950F ROM, yes. May or may not help though. Do you know which bands for GSM you need?
Kalm_Traveler said:
you can flash a 950F ROM, yes. May or may not help though. Do you know which bands for GSM you need?
Click to expand...
Click to collapse
Thanks for the reply kalm.
The bands are the following, may not be exhaustive though.
2G/3G 900/2100 MHz UMTS, HSDPA, HSUPA, HSPA+, DC-HSPA+
4G 1800/2600 MHz LTE
The rom i was talking about it's the original firmware that can be find on sammobile; can i flash it? Dovi need root permissions in order to flash it?
DeltaHF said:
Thanks for the reply kalm.
The bands are the following, may not be exhaustive though.
2G/3G 900/2100 MHz UMTS, HSDPA, HSUPA, HSPA+, DC-HSPA+
4G 1800/2600 MHz LTE
The rom i was talking about it's the original firmware that can be find on sammobile; can i flash it? Dovi need root permissions in order to flash it?
Click to expand...
Click to collapse
You won't be able to flash a 950F firmware with Odin, but you can install TWRP and flash a ROM in a zip file that way. Root has nothing to do with this method because the entire system is replaced.
Kalm_Traveler said:
You won't be able to flash a 950F firmware with Odin, but you can install TWRP and flash a ROM in a zip file that way. Root has nothing to do with this method because the entire system is replaced.
Click to expand...
Click to collapse
Which means i need ti flash one of the ROMs found in the anfroid develpoment thread, is that correct?
DeltaHF said:
Which means i need ti flash one of the ROMs found in the anfroid develpoment thread, is that correct?
Click to expand...
Click to collapse
Yes you can do that. I was running one for a few days, but now I am trying to figure out how to patch the 950N firmware to enable my provider's wifi calling feature.
Kalm_Traveler said:
Yes you can do that. I was running one for a few days, but now I am trying to figure out how to patch the 950N firmware to enable my provider's wifi calling feature.
Click to expand...
Click to collapse
Yeah i read your thread, hope you'll figure it out :good:
Thanks for your help man
Sorry to bother ypu again, went on device information, under sim status and noticed that it is actually HSPA+. Could this mean that is just the data icon not changing but it actually connects to H+ network?
DeltaHF said:
Sorry to bother ypu again, went on device information, under sim status and noticed that it is actually HSPA+. Could this mean that is just the data icon not changing but it actually connects to H+ network?
Click to expand...
Click to collapse
yes, the icon displayed is based on which CSC is loaded. HSPA is technically a 3G technology, so some companies display it this way. Some companies call HSPA+ 4G, and some call LTE 4G.
Can you download the app LTE Discovery and see which type of network you are connecting to?
Kalm_Traveler said:
yes, the icon displayed is based on which CSC is loaded. HSPA is technically a 3G technology, so some companies display it this way. Some companies call HSPA+ 4G, and some call LTE 4G.
Can you download the app LTE Discovery and see which type of network you are connecting to?
Click to expand...
Click to collapse
Done. Looks like im on HSPA+, still i don't know why the speedest between the N8 and S6E+ are so different
Informations
Hi, I am new on this forum and I reached here searching for the same issue.
I bought a galaxy note 8 SM-N950N, single sim, 64 Gb it’s the korean model.
Since I am italian and soon will go back to Italy, I’d like to know if is it possible to flash a stock italian or at least european rom.
And if you have any suggestion about which one should I use, for the moment I understood that I should flash the twrp and then put a zip file with the rom.
Is it possible to do it also without triggering the knox?
Thanks in advance.
Samsung SM-N950N Flash and use it in UK
HI
I bought Samsung SM-N950N. I cannot get any signal in the UK. it was bought from Korea. Its on KT.
Is it possible to change the software so that can use it in UK?
Please advise me, what are options.
Thanks you
rummann said:
HI
I bought Samsung SM-N950N. I cannot get any signal in the UK. it was bought from Korea. Its on KT.
Is it possible to change the software so that can use it in UK?
Please advise me, what are options.
Thanks you
Click to expand...
Click to collapse
I have a N950N here in the UK and it works no problem. At first my phone wasn't on LTE but I went to general management, and reset my network connections and it picks up LTE fine. Have you managed to figure it out already?
Samsung SM-N950N Flash and use it in UK
Frozenrosen said:
I have a N950N here in the UK and it works no problem. At first my phone wasn't on LTE but I went to general management, and reset my network connections and it picks up LTE fine. Have you managed to figure it out already?
Click to expand...
Click to collapse
How to reset network connection? No signal bar . Insert sim card but doesnt show any signal bar.
rummann said:
How to reset network connection? No signal bar . Insert sim card but doesnt show any signal bar.
Click to expand...
Click to collapse
Go to settings, general management, reset, then reset network settings. You will have to re-enter WiFi passwords though, but hopefully that will fix it for you
Frozenrosen said:
Go to settings, general management, reset, then reset network settings. You will have to re-enter WiFi passwords though, but hopefully that will fix it for you
Click to expand...
Click to collapse
Hi
I have reset the network setting but issue not resolved. No signal bar in network.
How to change CSC ?
Can i flash this phone.
rummann said:
Hi
I have reset the network setting but issue not resolved. No signal bar in network.
How to change CSC ?
Can i flash this phone.
Click to expand...
Click to collapse
That's strange, I don't have a problem and I didn't change the CSC for it. I think there are some threads here on how to change the CSC from a 950N, but you would have to root the phone. I haven't done that so I won't be a help in that. Good luck, and let us know if you get it sorted.

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