Database Users

[Q] Unsolvable problem with SAMSUNG GALAXY S5's 3G.

Hi,
I am from Bulgaria and I bought a ATT locked SAMSUNG GALAXY S5(SAMSUNG-SM-G900A) from a friend.
At first wasn't able to use my Bulgarian sim card(operator : M-Tel) but then I paid for unlocking code and 5 days later I unlocked my phone.
I put the card into the slot and started the phone. The signal bar was showing full but I was unable to make calls or send messages because of "Not registered on network" message. After an hour of reading the internet I found this code *#*#4636#*#* and then went to "Device Information" and on "Network type I change" it to "GSM only". ( I used the code because in the menu I dont have "Network type" option).
However now I can only connect to GSM network which is the problem because my mobile data is only EDGE NOT 3G. Here I need your help of solving this.
The available option of "Network Mode" are as fallows:
WCDMA prefered
GSM only
WCDMA only
GSM auto(PRL)
CDMA auto(PRL)
CDMA only
EvDo only
GSM/CDMA auto(PRL)
LTE/CDMA auto(PRL)
LTE/GSM auto(PRL)
LTE/GSM/CDMA auto (PRL)
LTE only
Unknown
There isn't LTE network in Bulgaria so I am asking how to use 3G on the phone. Should I root it(not pretty sure how to do it) or something else?
I posted my question in Bulgarian android forum and one guy told me to switch to WCDMA prefered but when I do and try to connect the operator M-tel it says Unable to connect.
So thats my problem with the Samsung phone so I would be very happy if someone knows how to fix this and help me.
Cheers!
Ivaylo

1. WCDMA only
2. Manually register to your Network by Settings [Settings>More Networks>Mobile Networks>Network operarors]
3. WCDMA prefered
Sent from my SM-G900F using XDA Free mobile app

trettet said:
1. WCDMA only
2. Manually register to your Network by Settings [Settings>More Networks>Mobile Networks>Network operarors]
3. WCDMA prefered
Sent from my SM-G900F using XDA Free mobile app
Click to expand...
Click to collapse
Selected network(Mtel) not available. Can not connect to the network. Only connects on GSM only.

Solution
patrona_pln said:
Selected network(Mtel) not available. Can not connect to the network. Only connects on GSM only.
Click to expand...
Click to collapse
Just call your service provider and ask them to activate 3G......I had the same problem, they solved it.

I called the operator today and they told me that other user also complain about their newest models of Samsung brought from USA and it's a software problem and to check for a software update. This didn't sound like a good news. Any ideas? Or i should just wait for something to happen.

No LTE Option On Mobile Network Setting

Hello all, i got Note 4 LTE N910G, but in my mobile noetwork option i only got WCDMA Only, GSM Only and WCDMA/GSM. Need help here. I try *#2263# (service mode) to apply all band but it didnt work.

jusho said:
Hello all, i got Note 4 LTE N910G, but in my mobile noetwork option i only got WCDMA Only, GSM Only and WCDMA/GSM. Need help here. I try *#2263# (service mode) to apply all band but it didnt work.
Click to expand...
Click to collapse
call *#0011# and go to service mode after that press three dot upper right of screen select back
after that again press dots and select Keyinput and type Q0211214 in Key input
wait until go to band selection
select all bands and restart ur phone

alpha_330 said:
call *#0011# and go to service mode after that press three dot upper right of screen select back
after that again press dots and select Keyinput and type Q0211214 in Key input
wait until go to band selection
select all bands and restart ur phone
Click to expand...
Click to collapse
Still no LTE option

Are you sure you have bought Samsung Note4?
Sent from my SM-N910V using XDA Free mobile app

Does your mobile operator has LTE? Usually you don't see LTE option when your network doesn't support LTE.

jusho said:
Still no LTE option
Click to expand...
Click to collapse
Try this way (ROOT is required):
- Install ES File Explorer, open the menu and enable Root Explorer option.
- Locate the file /data/property/persist.radio.lteon
- Open that file, and change its content from false to true
- Reboot the phone.

Hey Jusho,
I'm having the exact same issue with your issue, no LTE option with TELKOMSEL. Have you fixed your issue? If so, how?
Did you purchase 910G in Singapore?
I went to Singapore recently and was able to go to Samsung Service Center... we tried a couple of things :
- Use M1 USIM card in MY Note 4==> LTE option appears
- Put my TELKOMSEL USIM in THEIR Note 4 ==> LTE option disappear from THEIR phone
- Put OPTUS (Australia) USIM in MY NOTE 4 ==> LTE option appears
Today, I went to Grapari and asked them to replace the USIM and tried with the local Samsung Store :
- Put TELKOMSEL USIM in their Samsung EDGE ==> LTE appears
Any idea?

Hey guys, I had that same problem on my galaxy S4 before. I used a Straightalk sim card running on Tmobile. I called straighttalk and they replaced the sim card and everything worked.
Call your providers and ask them to change your sim for LTE compatibility. That is if your providers support it, and your phone supports the LTE bands.
Good luck

xdm9mm said:
Hey guys, I had that same problem on my galaxy S4 before. I used a Straightalk sim card running on Tmobile. I called straighttalk and they replaced the sim card and everything worked.
Call your providers and ask them to change your sim for LTE compatibility. That is if your providers support it, and your phone supports the LTE bands.
Good luck
Click to expand...
Click to collapse
I did mention that I have replaced with the new USIM (4G card) and LTE option won't appear. And yes, my provider supports LTE Band B8/900 Mhz

bankir said:
I did mention that I have replaced with the new USIM (4G card) and LTE option won't appear. And yes, my provider supports LTE Band B8/900 Mhz
Click to expand...
Click to collapse
sorry missed that part as I was reading fast. Anyway, have you tried to set the APN settings manually?

4G not connecting

Hi,
i experience a problem on note 4 where despite LTE/WCDMA/GSM (auto connect) is selected, the phone reports only H+ instead of 4G. is there any suggestion on how to make it connect to 4G?
some hints:
- the phone is running stock rom , not rooted.
- no issue with 4G coverage. other phones in the same area are registered on 4G network just fine.
- same carrier between phones.
waiting for your input and thank you for your time.
Thnx

subfire91 said:
Hi,
i experience a problem on note 4 where despite LTE/WCDMA/GSM (auto connect) is selected, the phone reports only H+ instead of 4G. is there any suggestion on how to make it connect to 4G?
some hints:
- the phone is running stock rom , not rooted.
- no issue with 4G coverage. other phones in the same area are registered on 4G network just fine.
- same carrier between phones.
waiting for your input and thank you for your time.
Thnx
Click to expand...
Click to collapse
Your SIM card is already a 4G SIM Card?
My phone could get a 4G in the 4G area, but I don't have the option LTE/WCDMA/GSM (Auto Connect).
But in a non 4G area.. it changes to H+

subfire91 said:
Hi,
i experience a problem on note 4 where despite LTE/WCDMA/GSM (auto connect) is selected, the phone reports only H+ instead of 4G. is there any suggestion on how to make it connect to 4G?
some hints:
- the phone is running stock rom , not rooted.
- no issue with 4G coverage. other phones in the same area are registered on 4G network just fine.
- same carrier between phones.
waiting for your input and thank you for your time.
Thnx
Click to expand...
Click to collapse
i have that prob also
what you need to do is that :
go to app " sim menu "
in sim menu you have roaming services get in ther and go to select mode then go from manual to auto matic /
naw you will see that ther is no signal but dont worry its clibrate whis your carier the signal will be back in 10 sec
then go to see that you will have the lte/4g .
if its not working do it agen it shold work

OSKARAMIR said:
i have that prob also
what you need to do is that :
go to app " sim menu "
in sim menu you have roaming services get in ther and go to select mode then go from manual to auto matic /
naw you will see that ther is no signal but dont worry its clibrate whis your carier the signal will be back in 10 sec
then go to see that you will have the lte/4g .
if its not working do it agen it shold work
Click to expand...
Click to collapse
how i go in to sim menu ?

Its an app that you have in

What note 4 version do you have?

Check your APN

Hey, Did you solve this problem? Please tell me how! Thanks

[GUIDE] [FIX] Unstable 4G/3G Network On OxygenOS [No Root]

If you use a OnePlus device specifically a OnePlus 3/3T then there's a really high probability that you've been effected by the unstable network problems(Data network automatically switching to 2G or 3G when the 4G signal becomes a little weak even though the device is capable of receiving the signal) caused when the signal strength is very poor. Even if you select 4G/3G only in the settings the signal becomes 2G.
If you are getting affected by this issue then you can solve this just by installing an app from the play store.
STEPS-
1. Install the app " JOnePlus Tools".
2. Open it and then click on "More Settings" icon on the top right corner.
3. After that click on phone info.
4. In phone info select drop down menu and choose the option, "LTE only" or " WCDMA only" according to your need.
5. Done.
I've been testing it for a few hours now and and haven't faced the issue.
If you are still not able to understand what to do then watch this video, everything done step by step.

But if you choose LTE only when there is not LTE the mobile signal is lost right?

vip57 said:
But if you choose LTE only when there is not LTE the mobile signal is lost right?
Click to expand...
Click to collapse
Yes.

Dial *#*#4636#*#* and in "Phone Information => Set Preferred Network Type:" select compatible settings according to your provider

OP3T Cellular Settings 1.1
Kartike said:
If you use a OnePlus device specifically a OnePlus 3/3T then there's a really high probability that you've been effected by the unstable network problems(Data network automatically switching to 2G or 3G when the 4G signal becomes a little weak even though the device is capable of receiving the signal) caused when the signal strength is very poor. Even if you select 4G/3G only in the settings the signal becomes 2G.
If you are getting affected by this issue then you can solve this just by installing an app from the play store.
STEPS-
1. Install the app " JOnePlus Tools".
2. Open it and then click on "More Settings" icon on the top right corner.
3. After that click on phone info.
4. In phone info select drop down menu and choose the option, "LTE only" or " WCDMA only" according to your need.
5. Done.
I've been testing it for a few hours now and and haven't faced the issue.
If you are still not able to understand what to do then watch this video, everything done step by step.
Click to expand...
Click to collapse
Install app OP3T Cellular Settings 1.1

davoudpro said:
Install app OP3T Cellular Settings 1.1
Click to expand...
Click to collapse
Link?

lover said:
Dial *#*#4636#*#* and in "Phone Information => Set Preferred Network Type:" select compatible settings according to your provider
Click to expand...
Click to collapse
Thank you for sharing

Kartike said:
Link?
Click to expand...
Click to collapse
https://labs.xda-developers.com/store/app/com.ebyt.op3tcs

This does not seem to work any more. I think since Android 8.

I tried the OP3T Cellular Settings 1.1 as suggested, but that didn't seem to work on my OnePlus 3T (Android 8.0.0).
However the Dial *#*#4636#*#* and in "Phone Information => Set Preferred Network Type:" as suggested by @lover, and then using LTE only worked perfectly. Thank you!

Bart9 said:
I tried the OP3T Cellular Settings 1.1 as suggested, but that didn't seem to work on my OnePlus 3T (Android 8.0.0).
However the Dial *#*#4636#*#* and in "Phone Information => Set Preferred Network Type:" as suggested by @lover, and then using LTE only worked perfectly. Thank you!
Click to expand...
Click to collapse
I Have Oneplus 3T Us A3000 Model. I am From India
actually here is the main issue is Volte Related, meanwhile 4g is working internet working super but Volte for calling not working. even i switch on Volte in settings but still they did not work for i try everything.
then i search and got the band issue is here i checked my Network provider using Band 3,5,40.
but in my mobile has band 5. so i unlock rest network bands by Qcn File of CN.
successfully unlocked the all my network provider bands.
but still Volte is not working i try my all efforts and things factory reset, custom rom but still Volte not working for me.
2nd issue
even now only 1 sim can work at a time other network gone out and when i try to search network the error comes (error while searching network)
means dual stand by is not working for me. vice versa same when i switch internet on 2nd sim 1st network gone
even i switch 1 sim on 4G and other on 2G.
?please help me out my Oneplus 3T is down

Nokia 6 network selection.

I am using nokia 6 since 3 months. I failed to find network option where i can select 3g only or 4g only network. At my home location network switches every minute, m unable use data, this is annoying. M using idea n airtel on dual sim.
My other phone Xperia Z1 is having that option to select 3g only network... Where it wont loose connectivity.
To post this issue, i switched network twice. Pls help.

karanrk007 said:
I am using nokia 6 since 3 months. I failed to find network option where i can select 3g only or 4g only network. At my home location network switches every minute, m unable use data, this is annoying. M using idea n airtel on dual sim.
My other phone Xperia Z1 is having that option to select 3g only network... Where it wont loose connectivity.
To post this issue, i switched network twice. Pls help.
Click to expand...
Click to collapse
Er, have you tried going to Settings > More > Mobile network > Preferred network type?

crystal_ball said:
Er, have you tried going to Settings > More > Mobile network > Preferred network type?
Click to expand...
Click to collapse
i did that way, but this wont keep network in same mode for longer. my problem is network keep on changing from 3G to 4G, 4G to 2G. my other phone shows these options on phone. m seeking if same will available on Nokia 6View attachment 4319411

karanrk007 said:
i did that way, but this wont keep network in same mode for longer. my problem is network keep on changing from 3G to 4G, 4G to 2G. my other phone shows these options on phone. m seeking if same will available on Nokia 6
Click to expand...
Click to collapse
Try dialling *#*#4636#*#* and select the first entry (Telephone information). You can set your preferred network type there. On my phone there are a lot of options to choose from, including LTE only, WCDMA only, etc.

crystal_ball said:
Try dialling *#*#4636#*#* and select the first entry (Telephone information). You can set your preferred network type there. On my phone there are a lot of options to choose from, including LTE only, WCDMA only, etc.
Click to expand...
Click to collapse
No use....

crystal_ball said:
Try dialling *#*#4636#*#* and select the first entry (Telephone information). You can set your preferred network type there. On my phone there are a lot of options to choose from, including LTE only, WCDMA only, etc.
Click to expand...
Click to collapse
this code dosent work at all, i tired resterting phone 4-5 times. it shows nothing.
i googled codes as well, other codes working but this codes show nothing.

Pls help anyone... Network sucks here.....

I also feels this problem. When I watching youtube The connection is off for 5 seconds after that it's connecting again same problem. But now I just used the *#*#4636#*#* and I selected LTE/wcdma and I think now my problem was solved thanks

Nokia 6 4G 3G & 2G settings
For Nokia 6.
You can change network in simple 4 steps
1) Simply go to settings then press
2) "Network & Internet" then press
3) "Mobile network" then press option
4) "Advance" here you find three options
"4G (recommended)"
"3G"
"2G"
and Slect the network you want
Thanks