I for one dont feel the need for LTE myself yet. Perhaps if im dling a large file or something i would want to use it, but my ever day activities that i use my phone for, 4G(HSPA) does just fine. So i decided to do some tests. The main reason i would turn off LTE and just use HSPA is id assume it saves battery. Ive come to this conclusion knowing LTE requires more phone power to hold the signal, and also the conclusion that when im on LTE, my phone signal is always significantly lower then when on HSPA. 1/2 bar vs 4/5bar normally.
How id normally turn off lte was using a shortcut to the Phone Info menu. Where you could change network modes. By default it is LTE/GSM Auto(Prl). I would normally set it to WCDMA Preferred to have it only use 4G(HSPA). However every reboot would reset that.
Until recently i found the Network Mode option within the settings menu. Wondering what the differences are side affects are, or if one mode affects the settings of another. So far ive found that the Network Mode and Phone Info modes are some what linked.
Network mode is under Mobile Network within the More Wireless Settings.
Phone Info via *#*#4636#*#*
Network Type via Settings > About phone > Status
Test #1
Set Network Mode: LTE (which in turn sets LTE/GSM Auto(Prl) if it was on anything else)
Set Phone Info Mode: LTE/GSM Auto(PRL)
Signal: 1Bar - 113db / 27asu
Network Type: LTE
Speedtest 1: 2.51 / 1.64
Speedtest 2: 2.21 / 1.80
Speedtest 3: 2.69 / 141
Set Network Mode: LTE
Set Phone Info Mode: WCDMA Preferred(i beleive doing this second, overrides the option set above, but it reverts it to LTE and LTE/GSM Auto(Prl) after reboot of phone)
Signal: 4Bars - 90db / 11asu
Network Type: HSPA\HSPA+
Speedtest 1: 2.25 / .45
Speedtest 2: 1.43 / .60
Speedtest 3: 2.08 / .42
Set Network Mode: 3G
Set Phone Info Mode: LTE/GSM Auto(PRL)
Signal: 4Bars - 91db / 11asu
Network Type: HSPA\HSPA+
Speedtest 1: 1.93 / .35
Speedtest 2: 1.55 / 1.04
Speedtest 3: 1.85 / 0.20
Set Network Mode: 3G
Set Phone Info Mode: WCDMA Preferred
Signal: 5Bars - 89db / 12asu
Network Type: HSPA\HSPA+
Speedtest 1: 2.03 / .45
Speedtest 2: 2.15 / .50
Speedtest 3: 2.20 / .55
Tried but in vain
when i am setting the Set Phone Info Mode to anything other than LTE/GSM Auto(PRL), it resets back to the default setting which is LTE/GSM Auto(PRL) as soon as i exit the phone information screen.
Related
I need some help modifying a Froyo rom to include a "GSM only" setting.
The background is that under certain conditions (i.e. intermittently), the cell radio shows full connection, but will not allow calls, incoming or outgoing. I finally narrowed a workable solution down to forcing "GSM only" (vs. auto selection of CDMA and GSM networks). But I can only get there at the moment by adding the "Phone info" custom shortcut to my home screen (ADW Launcher) and going in and setting it manually. And unfortunately that doesn't always survive a reboot either.
I would like to simply pre-set that in the rom and not have to re-set it again. I had assumed it was something that could be done in one of the init or prop file, but I have thus far not been successful in finding information about where and how to do that.
Any help would be appreciated.
Solved. For anyone else who stumbles upon this question, the setting in build.prop is:
ro.telephony.default_network=#
Where the # is a number code for which setting you want. In my experimentation for my device, "ro.telephony.default_network=0" is WCDMA preferred and ro.telephony.default_network=1 is GSM only.
I "think" the other codes are as follows (but I can not confirm this):
0 WCDMA preferred
1 GSM only
2 WCDMA only
3 GSM auto (PRL)
4 CDMA auto (PRL)
5 CDMA only
6 EvDo only
7 GSM/CDMA auto (PRL)
8 Unknown
Additionally, if you want to set it temporarily while the phone is running, you can launch the phone info settings by entering this on your phone's keypad:
*#*#4636#*#*
But I believe it will revert to whatever you have in build.prop at the next reboot. No matter what you set in build.prop, you can still go into your Wireless & network settings, Mobile networks, and click on or off the "Use only 2G networks" setting.
I must configure an SIII to work on GSM network by default. I can change the network mode in the phone info, but when I turn off the device, it back to the default.
I looked for a way to do this using the build.prop and found the following line:
Code:
ro.telephony.default_network = 8
I know that this line defines the network mode, but do not know what value to use. In case the default is LTE / CDMA and wanna leave LTE / GSM. Logically it should be 9, but didn't work.
Does anyone know the correct values?
Solved!
Set it to 3 and worked, network mode is GSM auto (PRL) as default
Many of you know that the sore point of this phone is the quality of signal reception. Informing about the mode of action of the baseband, and reading the feedback from users about their various tests, always read from their words unsatisfied a search of a radio version that could improve the reception of the terminal (and thus battery life).
Since I live in a poor signal area on the Vodafone network IT (and no LTE coverage), I thought that perhaps the solution could meet elsewhere. After PimpMyRom installation , under "Device Hidden Menu > Access Hidden Menu > Telephone informations" there is a menù was set to a profile "LTE / GSM auto (PRL)".
By clicking on the drop-down menu, I selected GSM Auto (PRL), then rebooted, and i have greatly improved connectivity to the network.
Below there is a legend about the most important items. Take the test and reported your opinions.
I recommend GSM Auto (PRL) for best battery consumption allowing the automatic signal 2G/3G, preferring to 2G when the 3G signal is weak.
- WCDMA preferred - The GSM phone is capable of using both 2G and 3G data communication and when signal strength is low 3G is favored more.
- GSM only - The GSM phone is capable of using only 2G data communication. When the 2G signal is too low you get nothing at all.
- WCDMA only - The GSM phone is capable of using only 3G data communication. When the 3G signal is too low you get nothing at all.
- GSM auto (PRL) - The GSM phone is capable of using both 2G and 3G data communication and when signal strength is low 2G is favored more. This one is a bit confusing to me since PRL is associated mostly with CDMA technology and not GSM technology.
- CDMA auto (PRL) - The CDMA phone is capable of using both 2G and 3G data communication and when signal strength is low 2G is favored more.
- CDMA only - The CDMA phone is capable of using only 2G data communication. When the 2G signal is too low you get nothing at all.
- EvDo only - The CDMA phone is capable of using only 3G data communication. When the 3G signal is too low you get nothing at all.
- GSM/CDMA auto (PRL) - Some phones are equipped with both GSM and CDMA capabilities.
devilpera64 said:
Many of you know that the sore point of this phone is the quality of signal reception. Informing about the mode of action of the baseband, and reading the feedback from users about their various tests, always read from their words unsatisfied a search of a radio version that could improve the reception of the terminal (and thus battery life).
Since I live in a poor signal area on the Vodafone network IT (and no LTE coverage), I thought that perhaps the solution could meet elsewhere. After PimpMyRom installation , under "Device Hidden Menu > Access Hidden Menu > Telephone informations" there is a menù was set to a profile "LTE / GSM auto (PRL)".
By clicking on the drop-down menu, I selected GSM Auto (PRL), then rebooted, and i have greatly improved connectivity to the network.
Below there is a legend about the most important items. Take the test and reported your opinions.
I recommend GSM Auto (PRL) for best battery consumption allowing the automatic signal 2G/3G, preferring to 2G when the 3G signal is weak.
- WCDMA preferred - The GSM phone is capable of using both 2G and 3G data communication and when signal strength is low 3G is favored more.
- GSM only - The GSM phone is capable of using only 2G data communication. When the 2G signal is too low you get nothing at all.
- WCDMA only - The GSM phone is capable of using only 3G data communication. When the 3G signal is too low you get nothing at all.
- GSM auto (PRL) - The GSM phone is capable of using both 2G and 3G data communication and when signal strength is low 2G is favored more. This one is a bit confusing to me since PRL is associated mostly with CDMA technology and not GSM technology.
- CDMA auto (PRL) - The CDMA phone is capable of using both 2G and 3G data communication and when signal strength is low 2G is favored more.
- CDMA only - The CDMA phone is capable of using only 2G data communication. When the 2G signal is too low you get nothing at all.
- EvDo only - The CDMA phone is capable of using only 3G data communication. When the 3G signal is too low you get nothing at all.
- GSM/CDMA auto (PRL) - Some phones are equipped with both GSM and CDMA capabilities.
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Thanks for the information
Zakoket2012 said:
Thanks for the information
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Don't quote OP please
0zura
thanks but i set GSM Auto (PRL) and after reboot again change to WCDMA preferred
Seyaru said:
thanks but i set GSM Auto (PRL) and after reboot again change to WCDMA preferred
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the same problem with me .
Seyaru said:
thanks but i set GSM Auto (PRL) and after reboot again change to WCDMA preferred
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mrgold2505 said:
the same problem with me .
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What ROM are you using? i'm on GE 4.3 slim and this setting stay on GSM Auto (PRL) without switch.
devilpera64 said:
What ROM are you using? i'm on GE 4.3 slim and this setting stay on GSM Auto (PRL) without switch.
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I use Wanam 2.0 for I9500
Hi, i`m on SlimRom 4.3 Beta 4
Everytime i try to change my Phone Profile to GSM Auto or something else in the List it crashes and says:
The Process: com.android.phone was quitted.
Any Suggestions what to do?
The LTE is draining my Battery like Hell!
n6n43hix said:
Hi, i`m on SlimRom 4.3 Beta 4
Everytime i try to change my Phone Profile to GSM Auto or something else in the List it crashes and says:
The Process: com.android.phone was quitted.
Any Suggestions what to do?
The LTE is draining my Battery like Hell!
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Click to collapse
It's strange because is a System related setting that can be changed without problems...maybe in your case this parameter is linked to something other. In my case all went ok only selecting other profile (i discovered that if you select "2G only" into telephone settings, this string change to GSM Only). So my suspicious is related to a linkage to some other driver that won't make you possible to change it.
We have to investigate. However my battery drain seems lowered combined with "Wifi tx power" + "iwconfig" file used for reduce Wifi signal power to 11dB. Other small things and Jelly pure ROM 4.3 will be perfect for daily drainage use
If you enter the special menu *#*#4636#*#* you can change between WCDMA preferred to GSM auto (PRL) this change will save you a little bit battery, but if you reboot your device you will note that it goes back to WCDMA preferred, this is a trick i found to stop that to happend:
1. Go to SETTINGS>MOBILE NETWOKS>PREFERRED NETWORK TYPE and set 3G
2. On the dial type *#*#4636#*#* it sould show you a special menu (testing), slect Phone information
3. Set preferred network type to GSM auto (PRL)
4. Once again go to SETTINGS>MOBILE NETWOKS>PREFERRED NETWORK but thos time leave it BLANK (both unset)
5. Reboot your device an tell me if it works XD
***Using CM11
Everything is happening according to your scenario, I will monitor my batt usage.
Thx.
Phone: Unlocked 4a. Network: Verizon
I have a macro that enabled me to switch between 4g LTE and 3g by toggling the value of the the system setting "preferred_network_mode" between 8 (LTE,CDMA,and EvDo and 4 (CDMA and EvDo). I also would toggle preferred_network_mode1 and 2 as well. Then, switching off and on airplane mode would enable the setting.
After the upgrade to android 12 (or possibly one of the monthly security updates) I can no longer force 3g. The preferred_network_mode value gets updated to 4, but the phone does not change from LTE, even after a restart.
Is there another setting that must be changed in 12 to enact that network change or did they kill that functionality altogether?
And before anyone asks - I know 3g is dying, but I live in AZ and many rural areas have no 4g but still get coverage fine with 3g. I'd like to keep using it until VZW turns it off completely.
PhxCliff said:
Phone: Unlocked 4a. Network: Verizon
I have a macro that enabled me to switch between 4g LTE and 3g by toggling the value of the the system setting "preferred_network_mode" between 8 (LTE,CDMA,and EvDo and 4 (CDMA and EvDo). I also would toggle preferred_network_mode1 and 2 as well. Then, switching off and on airplane mode would enable the setting.
After the upgrade to android 12 (or possibly one of the monthly security updates) I can no longer force 3g. The preferred_network_mode value gets updated to 4, but the phone does not change from LTE, even after a restart.
Is there another setting that must be changed in 12 to enact that network change or did they kill that functionality altogether?
And before anyone asks - I know 3g is dying, but I live in AZ and many rural areas have no 4g but still get coverage fine with 3g. I'd like to keep using it until VZW turns it off completely.
Click to expand...
Click to collapse
Can't you just change that on SIM settings?
There's an option there to choose the preferred connection type. If you choose 3G there, it doesn't work as preferred?
I thought that was that option porpouse.
Cheers!
The SIM settings only allow Global, LTE/CDMA, or LTE/GSM/UMTS.
There is no CMDA/EvDo option.
Manually setting the preferred network mode to 4 should override those options and force CDMA mode, unless the system variable that determines network mode has changed with Android 12.