S7 dual-sim (G930FD) howto working simultaneus LTE4G / 3g2g on both sim - Samsung Galaxy S7 Guides, News, & Discussion

HI
for starters please excuse me for my English (i use g.t.)
sow i have today a good surprise with my S7 dual-sim (G930FD) with latest nougat firmware
- SIM 1 (DigiMobile Romania) to be in 3g/2g mode and using 3g band (2100 MHz)
- SIM 2 (Vodafone Romania) to be in LTE/3g/2g mode and using LTE band (800 or 1800 MHz)
How to:
1. set 4G on the sim you want, then turn off that sim.
2. then for the other sim set it to 3G/2G
3. then turn on the sim that you turned off
4. if done right you will see SIM1 LTE/3G/2G, SIM2 3G/2G. or SIM1 3G/2G , SIM2 LTE/3G/2G

Seems also work here in Germany with TMobile and O2. Thx for this hint.

welcome

thanks seems to work for me as well

Had some problems with sim 2 (data sim) on lte and sim 1 on 3G (H). Incoming calls on sim 1 are going directly to the mailbox. Sim 2 is working properly.
If both cards are on 3G all is working fine.
Can someone check!?

Related

can't connect to 3g

hey guys i'm having an issue where i can't connect to 3G (GSM)
when i change it to GSM i get bars (no icon & no data) and my phone says just says searching where it should show the carrier, i've tried 2 different sims (wind & bell) both do the same thing
bell sim works on LTE and 4G (WCDMA) but not 3G (GSM)
wind sim works on 4G (WCDMA) and nothing else
anyone have any ideas why 3G (GSM) isn't working for me?

[Q] No LTE in Network setting in N910G (Singapore) - Troubleshooting

Purchased Note 4 from Singapore, Model # : N910G (4G variant). Using it in Indonesia with TELKOMSEL. Bought in Singapore because I wanted LTE. In Indonesia, they are selling N910H, which is only 3G.
Got the USIM Card from TELKOMSEL Indonesia and put it in my Note 4.
There is no LTE Option under Network Mode.. it only shows:
WCDMA / GSM
WCDMA Only
GSM Only
Replaced with M1 Singapore USIM Card and Optus Australia USIM Card, it shows:
LTE/WCDMA/GSM
WCDMA/GSM
WCDMA Only
GSM Only
These options appears even when I put those USIM in Indonesia.
Put my USIM card in another N910G in Singapore (belong to Samsung store), their LTE option disappears
WCDMA / GSM
WCDMA Only
GSM Only
Put my USIM Card in Samsung Galaxy Edge in Samsung Store in jakarta, LTE option is there
LTE/WCDMA/GSM
WCDMA/GSM
WCDMA Only
GSM Only
I used #*2263# and chose SELECT ALL BANDS and just happened to be in 4G area and for the first time, I can see the 4G signal. However, when I went to the network mode, it still does not have LTE option.
Question:
Even though there is no LTE option, does my phone operates in 4G when it gets 4G signal? or the 4G symbol only shows that we are in the 4G area but the phone won't download as fast as 4G because the LTE option is missing and am using the WCDMA / GSM setting?
Isn't it funny that my USIM Card can make the LTE option in another phone disappears?
Try to upgrade
Hi,
Try upgrading your note 4 to lolipop (5).
I had the same problem with you since my device is from Singapore and using in Indonesia when I had 4.4.4 in my note 4.
After I upgrade, the option is showing even I don't use USIM Card.

Problem with 4G signal @ Dutch vodafone 800, 1800, 2600 MHz

Hello,
I have the following problem: I can't get a 4G signal with my provider.
Vodafone Netherlands uses 800, 1800, 2600 MHz for 4G connection.
I have bought my telephone at flosmall . com
It should work, or do I forget something?
Can somebody explain this?
I had the same.
I tried some 4g signals apps to check my connection. This one seemed to fix it: https://play.google.com/store/apps/details?id=com.mcstealthapps3.networksignalsearch
Let me know if it worked for you!
I have trieded with the app but nothing changed.
But still on 3G...
I need to ask this.
Is your SIM card even 4G capable? If its older than 3-4 years it might not be.
I don't know anything about vodafone, but try googling, for one of my providers I actually needed to activate 4G on their website after logging in to my account.
Also. Settings -> Dual SIM & mobile networks. Is network mode set to 4G priority and Celluar data to correct SIM card if you are using dual setup.
Yes the sim card is capable with 4G (was using it on Lumia 950XL).
Have contacted Vodafone about the problem.
But the will only support devices that Vodafone Netherlands will be sell.
Have tried to flash lineage rom, but nothing change about the signal.
(stock Rom was from groschopp)
I also have a Le Pro 3 (x720) on the same network in the Netherlands and I have no issues with 4g.
I am currently using the Grossoshop-Rom (Build-number WAXCNFN5902011181S).
You can download several signal apps in the play-store to see if Band 20 is available to you, this is the one used in my region for 4g Vodafone.
I assume you set the preferred network type to 4G?
It's working now
Have called Vodafone again for some extra information about the frequency band for 4G.
But nobody could help me, there was one person that say i can give you a other simcard type maybe it will help. (I say how will it help if 4G works on a other phone with the same sim card, but let's just test it)
Afterwards the call, visited the shop for a other sim card
Doing the sim in slot 1 nothing changed, same 3G signal.
Was thinking this the last try and do the sim card in slot 2 and after 10 minutes i have LTE signal.
Trying slot 1 again but only 3G. changed back to slot 2 and solved.
Have earlier check slot 2 with me "older" sim card and only 3G was showing up.
I have noticed stock ROMs have better signals than say CM
88Gamer88 said:
It's working now
Have called Vodafone again for some extra information about the frequency band for 4G.
But nobody could help me, there was one person that say i can give you a other simcard type maybe it will help. (I say how will it help if 4G works on a other phone with the same sim card, but let's just test it)
Afterwards the call, visited the shop for a other sim card
Doing the sim in slot 1 nothing changed, same 3G signal.
Was thinking this the last try and do the sim card in slot 2 and after 10 minutes i have LTE signal.
Trying slot 1 again but only 3G. changed back to slot 2 and solved.
Have earlier check slot 2 with me "older" sim card and only 3G was showing up.
Click to expand...
Click to collapse
Same think, only H+ with Dutch Vodafone, put my SIM in slot 2 (hot swap) and immediately it turned on 4G :good:
(stock ROM 23s)
i have same issue in spain with x720 on simyo: no work 4g, only h+
i put on sim2 and nothing change
flammjager said:
i have same issue in spain with x720 on simyo: no work 4g, only h+
i put on sim2 and nothing change
Click to expand...
Click to collapse
You need to enter the APN settings for your provider's data coverage in the Mobile data section of Settings.
sk8223 said:
You need to enter the APN settings for your provider's data coverage in the Mobile data section of Settings.
Click to expand...
Click to collapse
apn is on and correctly
flammjager said:
apn is on and correctly
Click to expand...
Click to collapse
Are you on a custom ROM? Maybe it did something to the modem. If so, you need to return to a stock ROM and try.
The phone has all the bands it needs to work on your carrier, and my carrier as well. My SIM already had the APN settings for my carrier on it, and I connected to LTE right away on my x722. I'm on a vendor ROM, which is pretty much just stock eUI. I can't fathom why it doesn't work for you if you're still on stock. Have you tried the SIM in other phones?
I also have this problem in Romania with my LeECO Le Pro3, but with Orange 800,1800 and 2600Mhz. The only solution for this problem was to manualy search and select the 4G operator network. Although in settings/network operator it was on 4G/3G/2G(Auto) by default, my phone was stuck in H+/H/3G until i manualy search and select 4G. If you are sure your SIM is 4G and you have the corect APN you can try this but you will have to search and select for several times manualy to work. I find this solution very uncomfortable because every time you restart your phone or put it in airplain mode, you will have to repeat manual searches and register in 4G.
my x720 doesn't have the correct bands active. i activated them with qpst but only actived and running in sim2 (sim 1 actived but no gain lte signal)
ah! i'm on 20s
88Gamer88 said:
Hello,
I have the following problem: I can't get a 4G signal with my provider.
Vodafone Netherlands uses 800, 1800, 2600 MHz for 4G connection.
I have bought my telephone at flosmall . com
It should work, or do I forget something?
Can somebody explain this?
Click to expand...
Click to collapse
Do you own the X722?
Hello, I have problem with 4G, with Android 8.1
When I back Android 8.1 I have 4G Signal.
---------- Post added at 09:09 PM ---------- Previous post was at 08:57 PM ----------
Hi, after I install All Android custom 8.1
I try install android 7.1 (AICP 12.1) I have LTE Signal
When I back Android 8.1 and select Only LTE, I don't have any signal (4g,3g etcc) I have chage to "Global" and I have H+ signal

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.

mobile bands lost sim cards not working in redmi 4 prime

last night I tried to switch to another lte band by dialing *#*#4636#*#* , I don't know what band I chose , now no 2g or 3g bands and just one sim card works at a time and the one works only on LTE band, so since my operator doesn't offer volte I can't make calls and even receive messages. I found the proper qcm file and flashed it with qpst software successfully but nothing happened. any one have an idea what to do?

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