Speed Differences & Non-Sticking of "Preferred Network Type" *#*#4636#*#* and b prop
When speed testing on the "preferred network type" of LTE/CDMA/UMTS auto (PRL) I get an average speed of 9Mbps. When I change it to "TD-SCDMA only" I get an average of 21Mbps. I would like to keep it as TD-SCDMA but when exiting it always reverts back to LTE/CDMA/UMTS auto (PRL). In the settings on the phone under mobile networks it only allows me to select LTE, 3G, and 2G. When setting it in the build prop under ro.telephony, I have it set to 13 which is "TD-SCDMA only", it does not stick either. LTE/CDMA/UMTS auto (PRL) is the one it always defaults to no matter what. My network Carrier is ATT, the phone is unlocked and rooted. Can anyone offer any solutions?
Related
When I connect to internet depending on the location sometimes I get the G icon sometimes the H icon.
Is it possible to set it only to connect on H (even if reception is bad, 1 bar only, rather than G with 3-4 bars reception)
Is there an App for it? than can let you choose what you wanna connect to?
I know in my nokia n95 i could go to networking and choose what i wanted but i cant seem to find that on the galaxy s.
any help would be great
thanks
LOL...
G - GPRS
H - HSDPA+ (faster than 3G)
You can't change it, It depends on your signal strength and location.
Elvoski said:
LOL...
G - GPRS
H - HSDPA+ (faster than 3G)
You can't change it, It depends on your signal strength and location.
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Click to collapse
constant HSDPA+ would also kill your battery too..i would image ye?
Only as much as what constant 3G uses.
im sure its possible because here is how to do it on the Omnia HD, its just a hidden menu setting
http://forums.samsungi8910omnia.com...ncrease-web-browsing-speed-when-using-3g.html
we have the same menu on the Galaxy S, so if someone can just figure out how to get to this part then you can do it
That is to increase the speed of the 3G. You can only see results if your using 3G,not sure it will increase the speed of the HSDPA. Also this wont allow you to get more of the signal or allow you to use just 3g or hsdpa for internet, again its down to network signal and location.
Elvoski said:
That is to increase the speed of the 3G. You can only see results if your using 3G,not sure it will increase the speed of the HSDPA. Also this wont allow you to get more of the signal or allow you to use just 3g or hsdpa for internet, again its down to network signal and location.
Click to expand...
Click to collapse
You could do *#*#4636#*#* in the phone app and change CDMA/GSM Auto to WCDMA or WCDMA preferred for 3G only, but you will have no service if you leave 3G coverage since it will not revert to standard GSM.
dsjr2006 said:
You could do *#*#4636#*#* in the phone app and change CDMA/GSM Auto to WCDMA or WCDMA preferred for 3G only, but you will have no service if you leave 3G coverage since it will not revert to standard GSM.
Click to expand...
Click to collapse
That method didn't work for me when I tried it; each time I re-entered the menu, the settings had reverted to whatever was chosen in Menu -> Settings -> Wireless & Network -> Mobile Networks... either GSM Only or GSM/CDMA auto (PRL) depending on whether the 2G only box was checked.
To get 3G only, enter ServiceMode:
*#*#197328640#*#* -> Debug Screen -> Phone Control -> Network Control -> Band Selection
Choose WCDMA BAND for 3G only.
aurorix said:
To get 3G only, enter ServiceMode:
*#*#197328640#*#* -> Debug Screen -> Phone Control -> Network Control -> Band Selection
Choose WCDMA BAND for 3G only.
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Click to collapse
LEGEND, thanks so much works perfectly for me, exactly what i was looking for.
aurorix said:
That method didn't work for me when I tried it; each time I re-entered the menu, the settings had reverted to whatever was chosen in Menu -> Settings -> Wireless & Network -> Mobile Networks... either GSM Only or GSM/CDMA auto (PRL) depending on whether the 2G only box was checked.
To get 3G only, enter ServiceMode:
*#*#197328640#*#* -> Debug Screen -> Phone Control -> Network Control -> Band Selection
Choose WCDMA BAND for 3G only.
Click to expand...
Click to collapse
Yes thank you for this informaion. I was able to get to the service mode but was not able to change the band selection.
I receive the error: RAT Selection Option is Restricted !
theres probably a way to shortcut the screen with anycut but ive given up trying
I cab only get edge at work but it does actualy give me about 100 kbs
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
Please help.. Is there a way to set network mode to 4G only or LTE only?... In settings, I only have the Autoconnect, 2G only and 3G only options.. Thanks..
Is your SIM card already 4G supported? What's your carrier?
The 4G auto connect is available? Apps might be able to access 4636 without root. In there, if there's an option, select phone information, then lock the RAT to 4G only. Alternatively, if *#2263# or *#2683662# is available, in *#0011# select the other SIM if there is any, then in those other codes, band selection, GSM ALL (for the unused SIM), change SIM again with *#0011#, band selection, LTE ALL(for the used SIM). What's expected: If the SIM is not a USIM, the RAT will stay on 3G(UMTS/WCDMA). If the USIM is not authorized, no signal. With soft PLMN locking (manual operator search) the signal level is shown but it's unusable. If the signal is still not available, maybe the phone does not support that band/frequency or no LTE coverage? If rooted it's possible to add LTE only in those settings in feature.xml, if that file is not available others.xml is used. Or launch 4636, or RIL service mode with am broadcast.
Use this app (no root needed). Set to LTE ONLY. Works fine.
play.google.com/store/apps/details?id=com.ather.networkmode&hl=nl
This is worth a try. It's 4636.
ADD THIS IN system\csc\other.xml
<CscFeature_Setting_CustNetworkSelMenu4>LTEONLY</CscFeature_Setting_CustNetworkSelMenu4>
Click to expand...
Click to collapse
its very easy. you just need to install this app https://play.google.com/store/apps/details?id=com.teknokia.mtkengineerapp&hl=en and choose LTE Switcher menu. for detail info please go to https://www.teknokia.com/2017/08/how-to-lock-4g-only-or-lte-only-on.html
*#2263#
I have a SPRINT SM-T807P pre-owned tablet working 100% OK.
The device IMEI is clean and I'm outside the US.
I could find the 2G/3G/4G technology and bands supported prior to buy the device through eBay.
Then, running stock ROM MM 6.0.1 updated > root > unlock and debranding to clean SPRINT apps and restrictions with others carriers SIMs.
I have 3 SIMs from my 3 local carriers and I know I can't use LTE since the carriers LTE bands are not compatible with the device (Band 2 and Band 4 required by the carriers)
www_gsmarena_com/samsung_galaxy_tab_s_10_5_lte-6235.php
No problem with that, I can use 3G/2G mobile data for my internet surfing and email check tasks.
My problem is that my device is not supporting WCDMA!
When I'm in IOTHiddenMenu > ##DATA# Menu > HDR/1X Selection, I have only these options:
1) Hybrid
2) CDMA Only
3) EVDO Only
4) EHRDP 1x
5) Global
6) LTE + CDMA + EVDO
7) LTE only
As you can see there is nothing related to WCDMA!
Using "Global" is not the trick.
In GCF SETTING when going to
[2]UE Setting & Info
[1]Setting
[1]Protocol
[2]NAS
[1]Network Control
[4]BAND SELECTION
I can see "WCDMA Band Preference" > "WCDMA ALL" option but this setting is not saved.
Only are saved the options related to LTE, CDMA or LTE+CDMA.
Same behavior when going to RADIO SETTINGS > Set preferred network type. GSM/WCDMA options present but are not being saved nor accepted. I can save only options with LTE or CDMA (or both) involved.
RTN RESET and NV REBUILD done without getting WCDMA enabled after the tasks.
Now I'm in the way of discover why all the people with SPRINT SM-T807P can enjoy WCDMA services after unlocking the device and I can't do it as expected.
I'm thinking that is a restriction on the stock ROM.
I have a MSM8974 board with a Snapdragon 800 processor.
Build ID MMB29M.T807PVPU1CPI1
Any help/advice to enable WCDMA on the device will be really appreciated.
Additionally, when I'm in RADIO SETTINGS for some reason I can't select some options.
With a (*) mark are my "selectable" options. The other ones can't be assigned...
WCDMA preferred
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)
(*) LET only
(*) Unknown
All the "selectable" options were tested (selected and restart) with no success...
Maybe I need to enable LTE/HSDPA/GSM required bands through CDMA Tools or it seems to be a bad idea?
Adding additional LTE Bands was not possible with CDMA tools.
The new selection is not being saved.
I'm in the way of flashing the stock SM-T807T (T-Mobile) on my SM-T807P (Sprint) to check the behaviors.
Any advice will be really appreciated...
I could see at the Qualcomm website that the Snapdragon 800 processor supports WCDMA and full LTE bands frecuencies:
Supported Cellular Technologies
LTE FDD
LTE TDD
LTE Broadcast
WCDMA (DC-HSDPA, DC-HSUPA)
TD-SCDMA
CDMA 1x
EV-DO
GSM/EDGE
https://www.qualcomm.com/products/snapdragon/processors/800
I'm in the way (too) of searching for the correct MODEM flash file to get LTE, WCDA and GM/EDGE fully unlocked and working...
It was not possible to flash SM-T807T (T-Mobile) stock ROM from SAMMobile on SM-T807P (Sprint)
There is a Odin error.
I will try by editing NV to get the bands working...
Well, after working with CDMA Tools, NV Manager and editing the build.prop file, now I can see my required LTE, WCDMA and GSM additional bands! No more "Searching network connection" on the top left corner.
But the signal icon on the top right corner is always empty (no signal at all).
I have checked, deleted and reconfigured the APN, with no success.
And still I can't set "GSM auto (PRL)" on the Service Mode as "Preferred Network Type" so I believe I'm missing something else.
I'm really exhausted, I need help to be able to get my Samsung Galaxy Tab S working OK on my local GSM networks.
I will open a new thread offering to pay/donate for the service to have my device working on GSM ...
Is there any way we can force cellular network to be 4G LTE only? I want to stop it from automatically switching to H+.
I'm on stock nougat, rooted.
I think you can change it in the hidden service menu. BUT be VERY CAREFUL not to change other things in there.
First make sure your preferred network type is LTE auto, not 3g or 2g only.
Next, go to phone / dialer app.
Enter: *#*#4636#*#*
It should automatically direct to Testing menu, with Phone information, Usage statistics, and Wi-Fi information choice.
Select "Phone information".
Warning: There's many things to see here, but you can easily ruin your radio band in here. Just follow this guide and do not even touch other things.
Go to "set preferred network type"
I'm not sure what it would show for your phone, but for mine it shows "LTE/UMTS auto (PRL)".
Select "LTE only". It should immediately reset your network to 4G.
If it still switches to 3G, then test other options in the "set preferred network type" option.
After finish, exit the hidden menu and clear it from recent apps menu.
Warning: DO NOT CHANGE OTHER VALUES IN THERE IF YOU DON'T KNOW WHAT YOU'RE DOING. IT COULD RUIN YOUR RADIO BAND IF YOU'RE NOT CAREFUL.
Thanks. It worked.