does anyone know how to disable ROAMING for F180 ? - LG Optimus G (International)

My F180 keeps roaming to different cellular network, and this is bad because the network its roaming to is operating at 850 3G frequency, which the F180 does not support.
Does anyone know how to disable roaming?
When I go to "Settings", I can see "Global Roaming". Inside I think I need to go to "Roaming Network settings", and inside "Automatic" is chosen. I guess I need to change this to "Manual", but I don't know what to do then...

Related

Questions about band setting

I live in the UK, and am using a foreign version of a TP2 that I bought on eBay. I think it's probably the Hong Kong version - it's in English, but with support for Chinese characters on the keyboard.
Something I do fairly regularly is switch between 2G and 3G modes on my TP2 manually. I've created a start-menu short-cut to CMBandSwitching.exe which lets me change the phone's Band setting between "Auto", "GSM" and "WCDMA". My somewhat limited understanding of these settings is that "GSM" basically means "2G", and "WCDMA" basically means "3G". When I set the phone to "GSM" it picks up GPRS or EDGE signals (according to the status bar). When I set it to "WCDMA" it picks up HDSPA or 3G signals (if there are any). What I thought "Auto" mode did was simply switch automatically between 3G and 2G mode depending on 3G signal strength - so that if there's a 3G signal it uses that, if not, it uses 2G.
However, it seems like there may be slightly more to it than that. If I have the phone in GSM mode at home and search for available networks, it finds O2, T-Mobile, Vodafone and Orange (in that order - does that mean O2's signal is the strongest, or does it put it at the top of the list because I have an O2 SIM?) In WCDMA mode it only finds O2, which would suggest that O2 is the only 3G signal that can be picked up in my home (and even that's pretty weak ). However, if I set the phone to Auto, then search for networks, then it also starts to get a signal from the 3 network and lists all 5 carriers - in other words, in Auto mode it finds a signal which is not visible in either GSM or WCDMA mode. This suggests that Auto may be doing something else besides switching between 2G and 3G. Can anyone explain this?
Also, if O2 is the only network it can find when set to "WCDMA" does this mean that O2's is the only 3G signal I can receive?
Finally, there are four possible frequency settings in the lower part of the BandSwitching app. These are:
Auto
GSM(900+1800)+UMTS(900+2100)
GSM(1900+850)+UMTS(1900+850)
UMTS(2100+800)
Which is the best setting for UK use? I'm currently using the second one, and it seems to work okay, but would I gain anything by switching it to "Auto"? And can someone give me an idea of which areas in the world I could get decent 2G or 3G reception with that selection of settings available?
(bump)
No one...?

[Q] Preferred Phone Network Type

I just wanna know if this detail is right on my preferred network phone settings.I've got WCDMA (Preferred) selected,while other settings like GSM/CDMA etc were not ticked. Is that the right settings "WCDMA (Preferred)" for a mobile network in UK and on 3UK network?Thanks
WCDMA is also referred to as UMTS which is the technology behind 3G, so WCDMA (preferred) simply means that it will use 3G when it can.
oh,cheers for that.Now I get it

g3 d850 unlocked cannot detect 3g, hsdpa or 4g lte.

hello! i have g3 d850 at&t and its unlocked but i have problems while i try to connect phone with 3g or 4g lte data, signal bar ddisappears when i force connect with wcdma or lte. gsm work well. apn is ok. o g2 i have 3g 4g lte ok, with same apn and same parameters but on g3 i can connect only with 2g or E. please help me!
Same happen to me
Kind of the same happens to me(I'm in Claro - Argentina provider) and also D855
Signal bars go when i select WCDMA only but when i go LTE/WCDMA/GSM, i do get 3G+ but after a while (dont know if its when the device goes to sleep or idk, but after 30+- minutes) the modem stop responding, i can't make calls, get them or get any data.
I havent been able to find why this happens (tried different versions modem) and roms.... any help would also be apreciated.
I get it sometimes too and for me the solution is changing the APN. Sometimes carriers have different apns like "vodafone live" and "vodafone internet". So be sure you choose the right apn settings.
ogzhnpcmn said:
I get it sometimes too and for me the solution is changing the APN. Sometimes carriers have different apns like "vodafone live" and "vodafone internet". So be sure you choose the right apn settings.
Click to expand...
Click to collapse
I tried it, didn't work either! After some time, the modem stop responding... dont get internet or the ability to get or make phone calls.

LTE problem

I live in a place in Southampton in which my service provider works on gsm and lte only. My phone with v20a keeps changing my preferred network type from gsm/wcdma/lte auto to a default (I don't know where this is declared) gsm/wcdma preferred. Any piece of advice on how to change this?
Thank you in anticipation!
Try APM+ (Xposed addon)
It gives you the options to customise the power menu and one of them is a 2G/3G/4G switch
Well..
To be honest there is no point in having a toggle, i just want a solution so that my phone doesn't automatically change back to wcdma from lte after a while...i think its something in the settings

LTE Band Selection Problem (Band3, Band7)

Hi, I am new to the forum and want to share my experience about LTE BandSelection.
As discussed in the previous thread, you can access to Verizon Hidden Menu called LTEBANDSELECTION. By default, Band2 Band4 Band13 are checked and Band5 is unchecked. However, from LG website LTE 3/7 is supported for Roaming, but those bands are not on the list.
I can confirm that at least Band3 is working because I am on a carrier that uses Band8 and Band3. The problem is that, when I try to change the LTE band selections above (ex: adding Band5 to the list), it seems that LTE3/7 is not working anymore. After changing it once, I only get 3G signal without any LTE. The only way that I can get the Band3 signal again is going back to the original stock rom (13b) again.
It is weired that there is no hidden menu to select Band3/7. Do you have any idea on this problem? Thanks!

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