Database Users

[Q] Make "Preferred Network Type" to "GSM auto (PRL)" Stick

Hi,
I'm trying to set "Preferred Network Type" to "GSM auto (PRL)" on my Nexus 4 as my 3G coverage is really poor at work.
I get into the menu with *#*#4636#*#*, select "Phone information", choose the option in the drop down box. It works until I reboot the phone then have to start all over again.
Does anyone know if their is a line I can add to the built.prop file to make it stick?
TIA!

MrDouf said:
Hi,
I'm trying to set "Preferred Network Type" to "GSM auto (PRL)" on my Nexus 4 as my 3G coverage is really poor at work.
I get into the menu with *#*#4636#*#*, select "Phone information", choose the option in the drop down box. It works until I reboot the phone then have to start all over again.
Does anyone know if their is a line I can add to the built.prop file to make it stick?
TIA!
Click to expand...
Click to collapse
I know it's not the same as "Use only 2G networks", but you might try it until you can find a better solution.

SpookyTunes said:
I know it's not the same as "Use only 2G networks", but you might try it until you can find a better solution.
Click to expand...
Click to collapse
No, that is not the solution I want. If signal from my provider is not present or too low, it fall back to a "Partner" one without any charge to me.
If WCDMA PREFERED is selected, it always try to look for and get back to my provider antenna instead of staying on the Partner antenna.
My battery drain like crazy this way, but if "GSM auto (PRL)" is selected it is much better battery drain wise plus we have a repeater indoor for this partner signal...

MrDouf said:
No, that is not the solution I want. If signal from my provider is not present or too low, it fall back to a "Partner" one without any charge to me.
If WCDMA PREFERED is selected, it always try to look for and get back to my provider antenna instead of staying on the Partner antenna.
My battery drain like crazy this way, but if "GSM auto (PRL)" is selected it is much better battery drain wise plus we have a repeater indoor for this partner signal...
Click to expand...
Click to collapse
Sorry to resurrect and old thread, but I'm having the same issue. Did you ever figure it out?

npiper05 said:
Sorry to resurrect and old thread, but I'm having the same issue. Did you ever figure it out?
Click to expand...
Click to collapse
npiper05,
Actually I would be glad that this post would be resurrect since I never did find a solution.
I am sure with the right line(s) added to to built.prop would do the trick but I don't know what to add.
If you ever, let me know.
Cheers!

I would like to know what can be edited as well to make it stick to gsm auto after a reboot. My data totally sucks and drops all the time with WCDMA. My data works with out any drops when set to GSM auto. If anyone can help us out it would be greatly appreciated.
Chad

In the *#*#4636#*#* menu, my preferred network doesn't have LTE/WCDMA/GSM Auto. It only has LTE/GSM Auto. I was wondering how I can get LTE/WCDMA/GSM Auto. I am on AOKP.
When I am on LTE/GSM Auto, I have a lot of drop calls.

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.

[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.

Network mode changes to default after reset LG-H870DS

Hello
The problem i have is for the Dual SIM version (HongKong).
Every tyme the phone is restarted the Prefered network mode is reset back to default mode : GSM/WCDMA auto
The options I have are:
GSM/WCDMA/LTE auto
GSM/WCDMA auto
WCDMA only
GSM only
Has anyone else experienced this and would you know where is the best place to report this to LG?
thank you!

I'm experiencing the same issue when using on T-Mobile. I've even modified my APN settings to match TMO GS8, small change in APN type.
I submitted feedback to LG HK, https://www.lg.com/hk_en/support/contact/chat-email/email

I can confirm this behavior is the same on my H990DS that I'm running on the telus network in Canada. Every time the phone is restarted it always defaults back to "GSM/WCDMA auto" instead of "GSM/WCDMA/LTE auto"
I wrote LG support in canada and they told me they couldn't help me because it's an international phone. And that it was probably a problem with my APN settings (what a pathetic cop out canned response). There is obviously nothing wrong with the APN settings, as it has no problem grabbing an LTE signal when I set the preferred network mode to "GSM/WCDMA/LTE auto"
The issue, is that the phone resets it's preferred network mode to "GSM/WCDMA auto" every restart. As seeing that other people are experiencing this same issue in completely different carriers pretty much says that this is problem with the phone .
Has anyone found a solution?

I have the very same issue, i the past I have used an app that I could force a 1x rtt connection on a cdma phone, the app itself used the advanced phone menu to do this, but a lot of these app don't work anymore and haven't since kitkat, but I don't suppose it'll hurt to try, the one I used for my cdma phone was for the HTC thunderbolt, had a gray or black round icon with a little red lighting bolt.

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!