Database Users

Indian users need *#*#197328640#*#* help

Hi,
I'm using samsung vibrant and currently in india. I'm not able to connect to 3g on airtel and vodafone networks. I am using stock kb5. I tried playing around with settings in 197328640 .
Can someone help me with appropriate settings to make the 3g work on my phone.
1. Debug screen- common
2. Phone control
3. Network control
I'm not able to select combi bands in band selection
The sim works correctly on other phones.

[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.

LG G2 f320 only 2G

Hi guys, I have network problem with my LG G2 f320 (korean version). I have T-Mobile Czech Republic but I can use only 2G/gprs. In the notification bar I have 2G icon mostly time,sometimes there is 3G but not received/send data (arrow next 3g icon doesnt light) . 4G doesnt work. In the network settings is only choice between "wcdma only" or "automatic" . Please do you have any idea where should be a problem? Thank you very much
I have Android 5.0.1 (with older versions it didnt work too)

Nobody knows, please?

Apn settings?
_____________________________________Read more write less and be smart

Thanks. I have right apn settings

5457#*320# should openn an hidden menu. If yes inside you can find other carrier commands
_____________________________________Read more write less and be smart

Thank you. I tried it change frequence manually but it is same as "automatic" choice inside the hidden menu.

Have the same problem. Any solution now?

F800L mobile network issue?

Hi everyone
I need help for my lg v20. So the issue is i m not able to select 3g or 4g for my network basically when i go to mobile networks there is no option to change from 4g to 3g. Another major issue is that my mobile data is not starting as the mobile data toggle has an message saying connection not allowed.
Any help will be appreciated

Try dialing 5457#*800# to access hidden menu
Worked for me

can't change network mode!

hello!
I am trying to set my network mode to WCDMA because I want to use data and receive calls on the same time since my carrier hasn't enabled VoLTE (that's another story...) but I can't!
The option is there, settings, more, Mobile networks, network mode, i make the change to "GSM/WDSMA auto" but it won't stick! If I go back and come again to this menu, the option is reverted back to "GSM/WDSMA/LTE auto"!
There is no luck either with the LG hidden menu, *#546368#*870# , it says "Connection problem or invalid MMI code".
Could this has to do with my modded kernel?
Any other ideas?
Here is my setup right now:
LG G6 H870
Android 7 Nougat V11i-EUR-XX
Melina kernel 3.18.62-melina-rel7_2017.12.31_uber-6.x_STOCK_zefie
Thank you in advance for your help!

That is a GSM phone. You cannot simply switch to CDMA. Different hardware.

patruns said:
That is a GSM phone. You cannot simply switch to CDMA. Different hardware.
Click to expand...
Click to collapse
what?
If i know that correct, WCDMA = 3g, right?
I want my device to be locked to 3g only, not 4g, because when I receive a call, it drops from 4g to 3g and I lose my internet connection, which is really frustrating if you are in the middle of a video call!