LTE in DoCoMo does not work. - Galaxy S 4 Mini General

I got this (i9190) mobile for my kid, and it fits kids hand perfectly. But I can not make it connecting to LTE in Japanese DoCoMo. It is set in Auto mode, looks like LTE should be supported there (it is present in the APN config, and it was working in Europe).
The sim card is OCN mobile (DoCoMo subsidiary), "new contract"(made in 2022)
SIM type: voice + LTE.
The mobile works with voice and SMS. but data connection does not work. According to setup-info network is always in HSDPA mode.
I tried the same settings on Galaxy A3, and it worked perfectly; the mobile was in LTE mode from the beginning.
I may be mistaken, but before getting OCN/Docomo SIM, I tried my old Softbank LTE sim for iPhone 5 in this S4-mini, and it seemed working with "jpspir" APN fine.
Both mobiles are non-locked, brought from Europe.
Is there a way to make it work with LTE? Like making it more flexible in selecting data modes, making LTE preferred, or blocking HSDPA?
In the service menu (*#0011#) I found LTE_ONLY, and something like CDMA_...LTE_ONLY modes.. but it looks like it should disable the main UMTS voice mode. Now it is in GSM_WCDMA_ONLY, which may be the problem. But I do not know which is correct.
So, I appreciate if you have any guess on the problem

Really, I came to thinking that that LTE in APN, and in the service menu are just some rudiments left from the main platform, not available in the equipped Qualcom baseband chip.

Related

Disable GSM, use LTE/WCDMA only

I tried searching however could not find anything. Perhaps I may be using the wrong wording.
What I am trying to accomplish is to disable the GSM mode. What I find is the phone likes to jump to the GSM network and with that the internet connection just doesn't move at all. If I force the phone to WCDMA mode it work just fine standing in the same spot, so the phone is still picking GSM over WCDMA even when there is a good signal for WCDMA.
Current modes:
LTE/WCDMA/GSM (auto connect)
WCDMA/GSM (auto connect)
WCDMA Only
GMS only
Is it possible to have a LTE/WCDMA option?
MrDerrickC said:
I tried searching however could not find anything. Perhaps I may be using the wrong wording.
What I am trying to accomplish is to disable the GSM mode. What I find is the phone likes to jump to the GSM network and with that the internet connection just doesn't move at all. If I force the phone to WCDMA mode it work just fine standing in the same spot, so the phone is still picking GSM over WCDMA even when there is a good signal for WCDMA.
Current modes:
LTE/WCDMA/GSM (auto connect)
WCDMA/GSM (auto connect)
WCDMA Only
GMS only
Is it possible to have a LTE/WCDMA option?
Click to expand...
Click to collapse
I miss this option. The Xperia Z had this mode, I loved it. It was reachable via the common code *#*#4636#*#*. But this code doesn't work on the GT-I9505 with stock Samsung ROMs. But even with custom ROM, and working code. This special mode is missing. There are 2 switches for "LTE only" and "WCDMA only" but not both
Try this:
https://play.google.com/store/apps/details?id=com.tapbase.LTEswitcher&hl=de
MrSpiceGuy said:
Try this:
https://play.google.com/store/apps/details?id=com.tapbase.LTEswitcher&hl=de
Click to expand...
Click to collapse
App doesn't seem to work, when I hit "Select Radio Band" it comes up with "Set GSM/UMTS Band" and nothing else.
MrDerrickC said:
App doesn't seem to work, when I hit "Select Radio Band" it comes up with "Set GSM/UMTS Band" and nothing else.
Click to expand...
Click to collapse
You have to use "prefered network type" as seen here
https://lh5.ggpht.com/y1CQbSg9Wf8J3q3klA3GNi_IgVtluML2jwhW38ldPpExSPTQ_SEu6iWJa3kRNaiSfcg
This should work
Here is my screenshot. It only has "LTE/CDMA", which only allows me to use LTE. There is no "LTE/WCDMA" option.
Perhaps, this might be an idea for rom creators?
also interested in this.
yes, please add this function LTE/WCDMA only into ROM CYANOGENMOD.
because LTE/GSM auto (PRL) connect to 2G/3G/4G, and i'm not interested for 2G.
Did anyone ever find a solution to this?
fergietime said:
Did anyone ever find a solution to this?
Click to expand...
Click to collapse
Solution please ! I have the same problem also
True. I am able to use the following:
LTE/GSM (prl)
WCDMA (prl)
GSM Only (prl)
I am unable to use LTE/WCDMA/GSM
I am using XXUGNG8 modem, and I am unable to use 2G (network won't connect).
3G works in most cases, but it is still dropping. Only technology which works correctly is LTE...stable and fast.
I am unable to switch the network band to any other one. I tried it with service menu tool, but it does not work either (allows me to change to defined items above, and reverts back to LTE/GSM if I'll select anything else).
Is there a way to add support for more network modes? I am confident that my issues are not related to HW, as both bootloader, GSM modem and LTE modem are all of the same version - XXUGNG8, and I do have very good reception for whole band. I am just unable to switch over to 2G, and 3G is still dropping.
I live in Prague, Czech Republic, and I own GT-9505i variant
Any solutions guys?
any solution to this date? im interested in the same thing.
I finally found a solution that works on my Samsung Galaxy S5. Enter code *#2263# into your dialer. An option menu will open with "LTE/WCDMA Mode" only as an option. Works like a charm!
Wrong posted.
Hi,
Sorry to bump this but I have the same issue. I have a Galaxy S4 and it is very weird with its network selection.
The default setting is LTE/GSM auto, which I believe is LTE combined with the GSM Auto mode that everyone knows about - this being, prefer 2G instead of 3G in weak signal areas.
I have the following options:
LTE Only
LTE/GSM Auto
GSM Auto
WCDMA Only
GSM Only
WCDMA Preferred
Plus a load of other stuff about CDMA and EvDo (I'm sure that the GT-I9505 doesn't support CDMA or EvDo?).
The problem I am having is as follows:
Immediately when I got the S4, I realized that it was preferring GSM over WCDMA/HSPA. This was confirmed when compared with a Samsung Galaxy Ace Plus, on the same network, in the same location, and the Ace Plus (S7500) was choosing 3G, whilst the S4 chose 2G. Doing a bit of Googling led me to find the WCDMA setting, and after choosing that, the S4 chose 3G.
So all was good for the last 2 years, using WCDMA Only mode on my S4, as my mobile operator (Virgin Mobile) didn't have 4G access. Losing LTE wasn't a problem.
However, now I have switched to the EE network, I now face a problem. As mentioned above, there is the WCDMA Only mode, and the LTE Only mode - meaning that I am unable to have both 3G (WCDMA) and 4G (LTE) without also having GSM, and there is no way that I want to ever use GSM again, especially since that EDGE/GPRS are barely usable as data connections, GSM has sub-standard voice quality, and the S4 is choosing GSM over WCDMA.
A couple of examples, once on my way home, the S4 dropped from 4G to 2G and completely ignored 3G - despite being right next to a 3G mast operated by EE (albeit on the old Orange code). On WCDMA mode, the phone always connects to the Orange 3G mast. Thankfully, a bit later on, it did pick up 4G again, but if I was streaming Tunein Radio, that would have been a disaster (it would have dropped the stream).
A bit later on, on the same journey, the phone also went to 2G, from 4G - despite being in a reasonable signal area for 3G. Why didn't the phone choose 3G? I'd had enough by then and switched to WCDMA Only mode; result? 28% 3G signal (3 bars)!
It's also happened on my local mast, until a few weeks ago. The S4 was choosing 4G from a more distant mast (strength 50%), instead of 3G from the local mast (strength 60%). When I went downstairs, to the kitchen, the signal strength dropped and the phone went straight to GPRS! GPRS is likely to give about 30kbps max, so I don't know why the phone was doing this - although about 20-30 seconds later, it did then go to the 3G from the local mast.
I can't use LTE Only mode as (a) the 4G rollout isn't complete, and (b) the S4 does not support Voice Over LTE (VOLTE), meaning that in 4G only mode, I have no way of accepting or receiving calls.
I need a 3G/4G mode (LTE/WCDMA) on my S4, that doesn't use 2G at all, because 3G/4G signals are present virtually everywhere on the EE network, and it would stop the S4's crazy behavior.
Any suggestions to remedy this would be appreciated. I am not rooted, though if someone knew how to root the phone for me, it could be a possibility, as it is out of warranty.

switch between 2G and 3G

Hi I have a L720 and made him sprint sim unlock, I'm using it in Argentina with the "claro" position the company APN and it works, sign up both 2G and 3G and the mobile internet works fine. however my question is this, in the menu of this phone does not let me change mode, GSM / UMTS network can not choose one or the other, I can only make it automatic, it is not a stock ROM that lets me choose 2G or 3G. can this be changed? or stays like this forever? I need to use that in my area 2G 3G works very poorly and do not come calling me ..
from already thank you very much.

LTE does not show up as option with specific Operator (MVNO)

I have a SGS5 (SM-G900F) downgraded to Kitkat. (4.4.2)
I can use LTE with one operator A (4G shows in statusbar, speedtest measures above 50Mbits).
I bought a sim for operator B but I cannot switch to LTE mode in Mobile Data Settings -> Mobile Networks -> Network Mode. Any option with LTE is simply not available.
I tested the sim for operator B on an iPhone 6 plus, it works just fine.
I have found some guide for secret codes and walked through it to force LTE. It works, but it does not switch to 3G automatically when I receive a call (it does this with the card of operator A)
So I know that my phone does support both operators frequency bands, I can force it to work, but I want to have the convenience of automatic switching on a phone call.
Is there a list somewhere in the software that has flags for networks to enable and disable LTE options in the menu ? Can I edit this ? Where is it ?
Will updating my Android version fix this ? ( I would really prefer to avoid this, since I use SnoopSnitch )
Operator A is: Vodafone (DE), A1 (AT)
Operator B is: HoT (AT)->MVNO for T-Mobile (AT)

s7 edge is having trouble with TMobile's LTE mobile data

So I recently purchased s7 edge g935fd from Taiwan. The phone was working fine there in Taiwan. When I came back to the States, however, the phone seems to have trouble connecting TMobile's LTE mobile data. The LTE goes on and off , no matter where I am. The phone still says that it is connected to LTE even when the data is not loading. I tried to reset the APN setting but no avail. I also tried that sim card on my old ASUS Zenphone 2 and the LTE worked fine so it is probably not the sim card's fault. The weird thing is that I can still call, text, and even use 3g network, it's only LTE that is not working properly. Anyone got a solution to this?
check your phone lte band...
*#27663368378#
- UE Settings & Info
- Settings
- Protocol
- NAS
- Network Control
- Band Selection
- LTE Band Selection

ZTE blade a7 prime on at&t service

i just got this phone from visible, of course it comes unlocked but it only has some of the bands needed for lte service on att. i was curious if anyone has tried this phone on att and tell me how good lte is with just a few of the bands
Google camera for zte blade a7 prime
Even I got this phone through visible, but was wondering if gcam can be installed in this?
It is lacking almost all of At&t bands. Most likely you are on band 2.
quote from sd
To whomever is trying to configure the ZTE Blade A7 to work voice/text, use a network app like "Mobile Network Mode" to force it to select different type of network.
1. Go to the app, select "Force Mode"
2. Set Preferred Network Type: either "GSM Auto" or "LTE/UMTS auto"
This should enable you to make voice call or text both incoming & outgoing.
I had success doing this for my CricketWireless. When doing voice call, it switches to 3G mode.
You must setup your regular APN to have 4G LTE enabled.
Click to expand...
Click to collapse
I have mine on T-Mobile and it works perfectly after popping in a different SIM to add the TMOB APN.
But it wouldn't make a great DD, because while TMOB Band 4 support is fine where I am, I know from experience that it's pretty spotty elsewhere.

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