Database Users

[Q] SM900F Baseband Question/Problems

Hello ,
I bought a SM900F from UK a while ago and it was unlocked. I was capable of using 4G network there easily with no problems, but recently I have come to Dubai and am not able to hop on the 4G network . I have checked all the settings and made sure I had the 4G sim/ 4G data bundle and so on , but still same problem.
As per Wiki : Etisalat United Arab Emirates 1800 3 FDD September 2011 [500]
Etisalat United Arab Emirates 2600 7 FDD September 2011 [520]
My operator provides 4G on 1800 and 2600 Frequencies which are supported by SM900F. Just to clarify , this unit had never been locked .
So now im sitting here confused on what I need to do to get my 4G working , Im always connected to H and H+ .
Thanks in Advance ,
Nylem

Try to ask operator to give you his APN settings!
Settings - more networks - mobile networks - ap

Thanks for the reply ,
I have done that but still no hope

Nylem said:
what I need to do to get my 4G working , Im always connected to H and H+ .
Click to expand...
Click to collapse
Your phone should support those LTE bands.
Confirm that the band /frequency information isn't outdated.
Are you in an area where the carrier doesn't have LTE coverage?
Open a support ticket to investigate if the carrier has provisioned your account /SIM correctly for LTE.
Look at the various online forums and find out if others are getting LTE in your location.
Set what the LTE signal strength is in the S5 service menu.
Set a preference for LTE in the service menu.
Possibly you are getting 4G, bit the onscreen icon is just incorrect?
Try updating or changing your 900F modem.
.

fffft said:
Your phone should support those LTE bands.
Confirm that the band /frequency information isn't outdated.
Are you in an area where the carrier doesn't have LTE coverage?
Open a support ticket to investigate if the carrier has provisioned your account /SIM correctly for LTE.
Look at the various online forums and find out if others are getting LTE in your location.
Set what the LTE signal strength is in the S5 service menu.
Set a preference for LTE in the service menu.
Possibly you are getting 4G, bit the onscreen icon is just incorrect?
Try updating or changing your 900F modem.
.
Click to expand...
Click to collapse
Thanks for the swift response mate ,
1) Band/Frequency are all compatible with the phone
2) The whole city is LTE covered ( specially mine that I live in the center ) .
3) Already working on a ticket with the carrier , but they say problem is from my side
1) I set the LTE Signal , Lost all connection
2) I put bearer as LTE , Lost all connection
3) Could be a possibility
Can you kindly forward me or show me the path to where I can change my 900F modem to a more international one , Thanks a bunch !
<3

Nylem said:
Could be a possibility
Click to expand...
Click to collapse
Something is probably misconfigured or misprovisioned. But regardless, the issue will only be solved by paying attention to details and a process of elimination (of the possible causes).
The most productive single thing that you could do at this point would be to borrow a known working LTE SIM from a neighbour and see if works in your handset. Whatever the result, it would narrow down the possible culprits.
Also, don't assume that the frequencies are correct. Confirm with the carrier that they haven't changed or added new LTE bands.
Make the effort to find out what forums your carriers' customers usually frequent and look at recent posts there for seredipitious insights that you won't find elsewhere.
Don't dismiss the icon idea out of hand. Are your speeds indicative of an LTE connection?
You don't need a more "international" modem. Just a more current 900F one. Or less commonly, an alternate or older modem if your current one has a bug. Do a forum search for threads about changing modems. There are a lot of them. Don't fixate on this - it's one of the least likely possibilities.
Also consider updating to Android 4.4.3 or 4.4.4 which is said to address some connectivity bugs.
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[Q] Force Nexus 4 onto a specific frequency for testing?

Hello, I am currently living in Toronto and would like to test the network coverage for WCDMA 850MHz only, because the phone I'm buying only supports WCDMA 850/2100 (my carrier uses 850/1900).
I tried using *#*#4636#*#* but this only gives me the option to switch between Japanese, USA and cellular bands and does not allow me to distinguish between individual bands.
I've tried googling this and no help has come up yet.
I'm currently on Purity 4.4.4 and Hell's Core.

I have the same issue. Traveling in India, and my US-bought Nexus 4 seems stuck on US frequencies. My coverage and signal strength are terrible and the phone can't hold a connection. I want to switch it to Indian frequencies.
I tried using an app called Radio Switcher which is just a friendlier way of accessing the hidden menu. However, under Select Radio Band, it only shows USA and Japanese bands, not Euro or Asia.
Running CyanogenMod 10.2.0-mako.

Problem with 1900 Mhz Band (GSM and UMTS)

I recently own a X829 variant with 16S stock rom. Use dual sim feature and this is all I can get in data usage (voice works ok do):
SIM 1: 4G 2600 mhz OK, 3G and 2G 1900 mhz NOT WORKING
SIM 2: 4G 2600 mhz OK, 3G and 2G 850 mhz OK
The phone detects 1900 mhz band (either 2G or 3G) and I can use it for calls, but it cannot use it for data. I want to use the data plan of SIM 1 because I have much better data plan.
If 1900 mhz were not supported (Information says it is), even voice call wouldnt work, right?
Maybe I will need a unlock band feature provided by this user?: https://forum.xda-developers.com/le-max-2/how-to/guide-unlock-bands-leeco-le-max-2-fix-t3439154
Best regards to all

Your using T-Mobile in the states? ( location and available bands might be a factor)
Sounds like maybe just a settings issue. If you remove one sim, can you connect to these bands?
I'm using at&t in the states and specifically use one sim for data, and second for calls/texts, but can only use ONE at 4g at a time.... Can't have both at LTE connection.

I'm afraid not, I'm from Chile so I'm using local providers:
SIM1: Entel
SIM2: Movistar
I already test switching SIMs trays, I know I cannot use tray 2 for 4G/data. but it's funny I can only use 4G in both SIMCards in tray 1, but not 3G/2G in Entel carrier.
So If I use SIM1 in tray 1 only I get 4G, wich is good, but as I move far from city and 4G is not available, it will switch to 3G/2G (it appears in phone tray) and data will not be available anymore.

Install official Chinese s23. From the official leeco page. That will upgrade radio firmware and fingerprint firmware, from there, then you can flash any other custom ROM or stay with s23. Which is stable and good. Also full date wipe is recommended.

DooMaster said:
I'm afraid not, I'm from Chile so I'm using local providers:
SIM1: Entel
SIM2: Movistar
I already test switching SIMs trays, I know I cannot use tray 2 for 4G/data. but it's funny I can only use 4G in both SIMCards in tray 1, but not 3G/2G in Entel carrier.
So If I use SIM1 in tray 1 only I get 4G, wich is good, but as I move far from city and 4G is not available, it will switch to 3G/2G (it appears in phone tray) and data will not be available anymore.
Click to expand...
Click to collapse
I'm not familiar with those carriers, but google says all those bands should be supported. My only other suggestion would be to upgrade the firmware like already suggested.
16s on x829 was made for the states, not sure if that's what's holding you back,
Remember to backup, save your data and modem files.

Ok, so I tried Indian 16s, and a (slighthy) moddified chinese 23s without success, same issue: can call in 2G/3G 1900 Mhz Band but data doesnt work in that band.

Frequency bands question

Hi.
I want to buy an LG V20 h910 Unlocked, but I need Band 3 & 7 for my home network and possibly (when roaming on holiday) Band 20.
Various websites list at least Band 3 & 7 as being supported.
However, on the LG USA website, it says:
"LTE Bands 2/4/5/12/29/30, Roaming 1/3/7/20, and CA"
Will it work on my network, given that I will be using Band 3/7 in my home network, not just when roaming?
Thanks in advance

Unlock Bands is already possible

I have a ta-1083 with bands b7 and b28 blocked, I've searched in several places on google and still could not find something that can release these bands,
Has anyone with this problem been able to solve this problem?
I like the device, but it's already boring with this situation
Thank you all

No way. It's not going to happen. Quit wasting your time and buy another phone that has the bands you need.

Thanks for the answer, and this is very sad to read

6.1 plus supports all the bands. You can use this code *#*#4636#*#* to change bands and it works.

gopu5 said:
6.1 plus supports all the bands. You can use this code *#*#4636#*#* to change bands and it works.
Click to expand...
Click to collapse
Yes, it runs on 4g, but in bands like b5 and b3, but these are not standard here in Brazil, the network with the largest coverage is b7 that runs at 2600mhz,
So it fluctuates a lot between bands and often loses the signal altogether
I've changed a lot in these settings, but it doesn't solve 100%

JavaDroid_ said:
Yes, it runs on 4g, but in bands like b5 and b3, but these are not standard here in Brazil, the network with the largest coverage is b7 that runs at 2600mhz,
So it fluctuates a lot between bands and often loses the signal altogether
I've changed a lot in these settings, but it doesn't solve 100%
Click to expand...
Click to collapse
LTE only option you can choose

gopu5 said:
6.1 plus supports all the bands. You can use this code *#*#4636#*#* to change bands and it works.
Click to expand...
Click to collapse
No, you don't know what a band is. You can't use the test menu to add additional LTE bands. Kindly refrain from posting this idiocy here.

I know what is LTE Bands. 6.1 Plus supports all the bands but the fact it is configured in such a way the user can't change it hence the network switches bands automatically.
The LTE Only option configure the network to the 4G but yes you don't have the option to lock a particular frequency unlike other stock Android devices.
I dont know about other countries but here in India I use Jio 4G with 6.1 Plus my phone locks into 850Mhz , 1800Mhz & 2300Mhz (Jio supports it) simultaneously depending upon the conditions in my location.
The Android one might have disabled advanced band locking (FDD & TDD) feature. I'm not talking idiocy here.

gopu5 said:
I know what is LTE Bands. 6.1 Plus supports all the bands but the fact it is configured in such a way the user can't change it hence the network switches bands automatically.
The LTE Only option configure the network to the 4G but yes you don't have the option to lock a particular frequency unlike other stock Android devices.
I dont know about other countries but here in India I use Jio 4G with 6.1 Plus my phone locks into 850Mhz , 1800Mhz & 2300Mhz (Jio supports it) simultaneously depending upon the conditions in my location.
The Android one might have disabled advanced band locking (FDD & TDD) feature. I'm not talking idiocy here.
Click to expand...
Click to collapse
You are not talking about the same thing. The OP of this thread wanted to unlock bands that this phone doesn't normally support. We're not talking about "band locking".

Oh yeah this doesn't supports 2600Mhz