Related
Check the thread pages to see results from other users who have had much better results than the ones I got.
This solution was discovered while I was checking out the CDMA Hero forum, so I don't take credit for discovering the method.
http://forum.xda-developers.com/showthread.php?t=651848&highlight=cell+standby
Goto dialer and dial *#*#4636#*#* (DO NOT press send) wait a second and you will get the test menu.
In the test menu choose 'Phone Information'
scroll down and choose on the first drop down - GSM auto (PRL) (for high speed data) or GSM only (You may get 3g if not use GSM auto (PRL))
Back out to test menu then back into 'Phone information' to see if it sticks (if not try again) then back all the way out.
You might want to reboot, but I found the settings worked straight away.
Edit 3 - I don't take any responsibility for step 6 - 6) Try other settings on the dropdown if you are brave as I don't know the consequencies of using settings like "EvDo only" and "unknown" as they may be better depending on the way your provider provides information.
Edit 4 - can't seem to select the other settings like EvDo and unkown anyway.
Edit 3 - TBH - GSM auto (PRL) is working for me with HSDPA and I will try
(PRL) instead of GSM auto (PRL) <- edit - previously it mistakenly said GSM only
the CDMA and WCDMA settings later to see what other effects there are.
This way I managed to get 5½ hrs and only lose 10% battery (GSM Only)! (Edit 3-) Slightly more drain with GSM auto (PRL) but still better than before.
Previous to this I lost 35% in the same amount of time with the same use (sometimes even more when I didn't even use the phone all night).
Hope the devs can make use of this (maybe mess with other settings in there to improve battery more.). I did notice that the GSM auto (PRL) uses a bit more battery than GSM only, but that is to be expected.
Edit: Actually you might need to set it on each reboot, not sure, the settings stayed when I rebooted
Edit 2: When you change roms (or re-install a rom) you will need to do this again, but should stay after a normal reboot as it does for me.
============================
Results:
Your results will vary depending on the rom, but it should improve battery performance - some have had better results than me using this.
GSM only <---- If you don't get 3g with this it is the same as 2g setting then use GSM auto (PRL) if you want faster than 2g (as some people are getting 3g on GSM only - I will investigate. (if you don't use internet or don't need fast internet)
5½ Hrs - lost 5% Battery - This one is same as running 2g as you don't get HSDPA, but using Opera browser makes browsing fast even using this. If you want Higher speed data use the one below.
GSM auto (PRL) <---- Recommended if you want High speed Internet and save battery
1:40am to 2:00pm (12hrs 20 mins) - lost 40% battery with moderate use a bit of surfing at HSDPA speeds, a few calls and messing with a few apps. Other people have had even better results than me though, so I might change my rom and try again. (I would usually about this amount of time I would have lost about 70-75% - and yes it was that ridiculous - I had to find something to stop this).
" WCDMA Only"
2:06pm to 11:37pm - (9hrs 31mins) lost 46% battery again moderate use and a reboot
This one might be useful if you live in a place that has low GSM signal like the chap in post #10 as it does give HSDPA - but this is only a suggestion as I cannot test it in Iceland. Anyway
" WCDMA preferred"
6:02am to 2:51pm - (8hr 49mins) lost 41% battery this time with less use that the WCDMA use and no reboots.
=============================
Conclusion: (For me anyway)
SO my preference is GSM auto (PRL) some people have got some excellent results with this. You may, however, require one of the other options depending on your service provider signals.
===========================================
EXTRA OPTIONS :
Other settings you can change: (You may have tried this already)
If you don't get GSM auto (PRL) then if you press the menu button on your phone in the 'phone information' page and select 'radio band', you may be able to change it to Automatic or one of the other settings and then you might get GSM auto (PRL).
Available Radio Bands * You may get others depending on the radio you have installed, but I haven't confirmed this*
Automatic
EURO Band
USA Band
JAPAN Band
AUS Band
AUS2 Band
There are other settings there that I haven't messed with, maybe someone with more knowledge may be able to help
Thanks to those who found out what PRL stood for, I will try to update this info in the instructions soon.
========================
I think the reason this works is because it prevents the phone from constanly looking a round for various networks types as it I did notice that the Cell standby time is always high and using this method the cell can standby without constantly searching for a signal thereby wasting power. ALso using this method my "Awake time" is a LOT LOT lower than my "Up time" - about 1200% less (is that right 12 times lower (Up 12hrs - Awake 1hr) ?) - before this the two times were most of the time the same and some times slightly lower. - I'm sure someone will let me know if this theory is incorrect - and I'm open to and welcome that.
This is my experience you can read other peoples who have achieved a lot better than me, and I'm glad I spotted this and let you guys know. (Those who are saying that you've known about this test menu thanks for letting me know that you knew about it before, but a lot of other people didn't know about it. ALso I don't think people have used this as a tool for increasing battery in the GSM section of the forum. As I mentioned at the top of this post I noticed it in the CDMA section as a way of increasing battery performance. - credits to them for thinking it up in the first place.) -
All I am saying though, is to test it out yourself.
.
.
Just tried this. If it works i'll kiss you.
petsasj said:
Just tried this. If it works i'll kiss you.
Click to expand...
Click to collapse
Well in that case I don't know whether I want it to work now, LOL, unless you're a fit babe.
I went back to 1.5 for battery problems, let me know if it works so i can go to 2.1 roms
This is just using 2g instead of 3g, isn't it?
xangma said:
This is just using 2g instead of 3g, isn't it?
Click to expand...
Click to collapse
Like I said in the first post GSM (auto) PRL gives you 3g/hdspa but not as brilliant battery as GSM only, but is better than before.
I am now unplugged from fully charged. Will report back in the morning and throughout the day to let you know if this works.
About PRL, here's what some telecom website says:
The term PRL actually refers to file stored in your phone. This file directs the phone to find alternative networks to operate on when the primary operator cannot be reached. Updating the PRL will store in the phone which are the most up to date, current networks to operate on. In order to operate on another carrier’s network your primary service provider must have a roaming agreement with other carriers.
Almost all phone carriers, such as Oxygen, Locus, Cingular, Verizon, etc. have roaming agreements with other major service providers.
Click to expand...
Click to collapse
So I guess it's useful?
Suppose so.
I am on a fairly small operator in Iceland and my phone started roaming when I did this.
I lost 3G connection and went over to Edge...
Switched back to the WCDMA Preferred.... My provider has a little limited coverage but has no roaming charges on the GSM network.
Any ideas what setting I should use for my phone other then WCDMA preferred
Yea mine is on Wcdma preferred when i go into it. Im on t-mobile uk. Ive left it for now as dont really know how long this battery is lasting. Going to give it a few days to see an average
skimminstones said:
Yea mine is on Wcdma preferred when i go into it. Im on t-mobile uk. Ive left it for now as dont really know how long this battery is lasting. Going to give it a few days to see an average
Click to expand...
Click to collapse
I'm on T-Mobile UK and GSM auto (PRL) gives me 3g/H and GSM only gives me gprs. Like I said, both give me loads of battery time (GSM auto PRL is a bit less than GSM only though).
Interesting, I may have done this accidentally a few days ago...
I just checked and it was already on GSM auto PRL, I'd changed this in my build.prop last time i was fiddling:
ro.telephony.default_network = 0
I thought that would give me wcdma preferred but apparently not...
I'll have done your tutorial ... will wait till end of day what happens
Definitely helped battery life.
Thumbs up!
In fact i can be wrong, but this tip only disable 3G access... only GSM and Edga.. so it save some battery for sure.. but you will navigate slower if you have a real 3G or 3G+ access.. am i wrong ?
Ciao
Fred
Surely this does the same as the button in the options to just use 2G?
frederikk said:
In fact i can be wrong, but this tip only disable 3G access... only GSM and Edga.. so it save some battery for sure.. but you will navigate slower if you have a real 3G or 3G+ access.. am i wrong ?
Ciao
Fred
Click to expand...
Click to collapse
Correct me if I am wrong, but isn't HSDPA faster than 3G?
source: http://en.wikipedia.org/wiki/High-Speed_Downlink_Packet_Access
in which case you would get your faster browsing using GSM auto (PRL) - giving you HSDPA. I certainly get a H showing at the top of the screen while browsing and it isn't constantly connected when I'm not browsing, which it was doing (connecting and disconnecting all the time) before I chose this setting, and thereby my battery life was extended a lot.
Edit: Just try it - if it doesn't work just put it back to your original setting, it has worked for me - There are other settings in there but I have not tested them out yet.
btdag said:
Surely this does the same as the button in the options to just use 2G?
Click to expand...
Click to collapse
It may be, but not if you choose GSM auto (PRL) - also make sure you have the correct APN settings from your service provider. I did notice that the standard APN's on the phone have always been a little different from the ones on the T-Mobile UK website.
This is not a fix for the battery issues in 2.1 roms, althought it may help as 3g doesn't use the same amount of battery as 2g. But i think everyone knows that anyway. Much easier having the 2g/3g toggle on the home screen and changing it to 2g only when you are not using the web browser etc
ps: before people say other wise this menu has been known for ages and every rom I use is always on GSM.
How can you set the Defy to WCDMA Preferred? It constantly reverts off of it.
Bump
Sent from my MB525 using Tapatalk
You mean in the INFO menu? I don't believe you can. At least not with the stock ROM. I believe the choice is controlled by the firmware which varies from market to market, I presume.
That's the same as 3G only? Mine has the option under the mobile network settings. I get three choices (this is exactly how it reads): 2G only saves battery, 3G only better performance, and Automatic Default. Hm you should have the same thing.
In my handset, if you go into Settings > Wireless & Networks > Mobile networks, there is an option/drop-down box for Select network.
It gives you a choice between 2G only, 3G only and Automatic which is the default option and the only sensible one IMO.
edit: same as bobbyphoenix it seems.
Selecting 3G only means the phone will not use the 2G network ever, so if you were to end up in an area without 3G signal, you'd be disconnected.
Automatic means the phone will use 3G when available and 2G when it's not. As I said before, it's the only sensible choice.
Step666 said:
In my handset, if you go into Settings > Wireless & Networks > Mobile networks, there is an option/drop-down box for Select network.
It gives you a choice between 2G only, 3G only and Automatic which is the default option and the only sensible one IMO.
edit: same as bobbyphoenix it seems.
Selecting 3G only means the phone will not use the 2G network ever, so if you were to end up in an area without 3G signal, you'd be disconnected.
Automatic means the phone will use 3G when available and 2G when it's not. As I said before, it's the only sensible choice.
Click to expand...
Click to collapse
That doesn't answer the question. There are two settings within the testing menu: wcdma preferred and gsm auto prl. The former tries to hang onto 3G whenever possible, where the latter uses an internal list of networks and it decides when to switch.
hah2110 said:
That doesn't answer the question.
Click to expand...
Click to collapse
Yes it does.
Automatic means the handset will use 3G whenever possible - ie 3G preferred.
No - they are two different things, as I explained. The Defy is using GSM PRL, NOT WCDMA Preferred.
hah2110 said:
No - they are two different things, as I explained. The Defy is using GSM PRL, NOT WCDMA Preferred.
Click to expand...
Click to collapse
When my phone uses wifi calling with wifi preferred (in the wifi calling menu) the INFO (testing) menu shows "GSM only". This choice will not allow 3G connection (2G, yes). When I turn off wifi, the phone switches to "GSM auto (prl)" and I get 3G. I read on one forum where someone claims they switched to "WCDMA preferred" then did a battery pull and it stuck. Also read that the WCDMA selection depletes battery faster. Hey, don't always believe what you read.
So I'm on a CyanogenMod 10 nightly, and I am having the problem of the Preferred Network Mode setting not sticking, like several other users apparently, and after searching the forum I have concluded that there is no actual solution yet. Right now I can get to 4G LTE by manually setting to LTE/GSM/WCDMA in the Preferred settings, but it always reverts back after reboot. Apparently this does not happen to everybody; how should I fix this?
I posted in the CM Nightlies thread but no one seemed to notice. I hope this can get to the devs so they can fix this eventually I guess.
The following may be of use
http://code.google.com/p/cm9-msm8960/issues/detail?id=39
According to that, this is a hard-coded problem caused by the settings in the two places not matching?
Try going to your dialer and typing *#*#4636#*#*
Use that dialog to set it to what you want and hopefully it will stick then?
I never encountered this problem myself because I never want my phone on LTE as the battery life is pitiful as is and LTE only makes it worse.
Mine is set to WCDMA only on quattrimus cm10 and it sticks no problem.
Sent from my Nexus 7 using XDA Premium HD app
same here
iarejohnsmith said:
So I'm on a CyanogenMod 10 nightly, and I am having the problem of the Preferred Network Mode setting not sticking, like several other users apparently, and after searching the forum I have concluded that there is no actual solution yet. Right now I can get to 4G LTE by manually setting to LTE/GSM/WCDMA in the Preferred settings, but it always reverts back after reboot. Apparently this does not happen to everybody; how should I fix this?
I posted in the CM Nightlies thread but no one seemed to notice. I hope this can get to the devs so they can fix this eventually I guess.
Click to expand...
Click to collapse
Had the same problem, except that it dropped data service every 10 mins or so. Didn't even had to reboot. I could fix that by changing the network settings from lte/wcdma to gsm/wcdma. Another thing I witnessed when on lte that it would recover data connection when the process was restarted e.g. when activating and deactivating airplane mode.
Unlike most people, I'm actually wanting to keep it on LTE only, since I just keep data off until I need it, and when I need it I want full speed.
The phone always reverts back to GSM/WCDMA, turning off LTE.
I messed around in *#*#4636#*#* but it didn't really do anything.
I've been having the same problem on my Razer Phone 2. I don't think this is specific to the phone itself, but. I'm getting desperate for a solution. I change the preferred network type in the *#*#4636#*#* menu, I get LTE fine..... As long as I don't restart the phone or go on/off with airplane mode. Then I have to do it all over again. Does anyone know how to make this stick?
I have a galaxy nexus
ROM : XenonHD 4.2.2 (tried Stock 4.2.2 for 2 weeks)
Baseband : 19250XXLJ1 (was on earlier ones as well)
Kernel : Stock
Location : Bangalore(India)
Connection : TataDoCoMo
My internet (primarily using 2g, sometimes 3g) and it drops very often.
To enable it, the below steps does NOT word:
1. Toggling flightmode
2. Restart mobile
Only one step works (75% success)
Manually search for network and select network automatically and sometimes to manually select the network.
Please help.
Update: (Strict 2g mode enabled)
I've been sitting in my seat since posting the previous post. Checked my internet and i do not have data connection. Gonna enable it now.
Even manual selection of network dint give me data connection after waiting for 5 mins.
Enabled and disabled flight mode - waited for 5 mins - no go.
Gonna restart and check - last option - no go.
Now i disabled data - strangely, i lost signal for a few second.
Enabled data again - waited for 2 mins - and walah it came.
I dont know on what basis the internet comes and goes like this. It is not humanely possible to do all these steps, just to get the internet enabled. Can anyone help me from this plight.
Can anyone please offer some advice?
You can change rom, and check if it will be fixed.
What kind of network strength do you see in “Status“ page in settings? Post a screenie.
Try a different ROM to be sure it isn‘t a network fault.
Final solution to my data drop issues
wuodland said:
What kind of network strength do you see in “Status“ page in settings? Post a screenie.
Try a different ROM to be sure it isn‘t a network fault.
Click to expand...
Click to collapse
Tried stock as well as PA. So i guess its not a ROM issue
adamczyk777 said:
You can change rom, and check if it will be fixed.
Click to expand...
Click to collapse
Tried stock as well as PA. So i guess its not a ROM issue
I tried a lot of methods and this worked finally. Am on latest radio release I9250XXLJ1. Browse and install it if you are not on it.
Dialed *#*#4636#*#*
selected "Testing"
Selected "Phone Information"
Scrolled down and set the option of "Set preferred network type" as GSM auto (PRL)
Noticed change in GSM Service, GPRS service.
Next time, this dint work tried the below method and finally worked.
At the bottom right corner, the properties option indicated by 3 perpendicular dots took me to change Radio Band.
I tried with the first 5 option with no network coverage and finally AUS Band started giving me uninterrupted data signal.
Success...
Is it possible to disable LTE on AT&T using an AOSP ROM?
I've tried the rat restriction method and the wap.cingular apn and neither worked.
Sent from my SAMSUNG-SGH-I747
phositadc said:
Is it possible to disable LTE on AT&T using an AOSP ROM?
I've tried the rat restriction method and the wap.cingular apn and neither worked.
Sent from my SAMSUNG-SGH-I747
Click to expand...
Click to collapse
No. Not yet anyway. So far the rat restriction works only on stock TW. As far as wap.cingular, I have noticed that it no longer works either. I think AT&T did something that seemed to disable it.
aybarrap1 said:
No. Not yet anyway. So far the rat restriction works only on stock TW. As far as wap.cingular, I have noticed that it no longer works either. I think AT&T did something that seemed to disable it.
Click to expand...
Click to collapse
AT&T effing sucks. They let iPhone disable LTE but not us? Makes no sense.
Sent from my SAMSUNG-SGH-I747
aybarrap1 said:
No. Not yet anyway. So far the rat restriction works only on stock TW. As far as wap.cingular, I have noticed that it no longer works either. I think AT&T did something that seemed to disable it.
Click to expand...
Click to collapse
My LTE toggle on CM10 works fine using the UCDLK3 modem (or whatever it is). The settings update from "WCDMA only" to "LTE/WCDMA/GSM" when I toggle it (just to confirm). I haven't updated to CM10.1 yet, but last I tested it the LTE toggle did not work.
On CM10, I did have to go into Settings and find the Mobile Networks option (its on the same page you enable Data Roaming) and select an AT&T network once. The toggle would not work if I selected "Select automatically". My phone is also unlocked using the dialer code that was posted for ICS 4.0 ROMs - not sure if this matters.
You can on AOSP.
System Settings> More> Mobile Networks
Now go to Network Operators, Might take a couple of minutes to scan, once a list shows up. Select the first option.
Now go back and choose the wap.cingular APN.
Also, if you want to get on 2G, the "Use only 2G Networks" is now able to be checked as well.
These options will reset after a reboot and toggling between Airplane mode.
AacidusX said:
You can on AOSP.
System Settings> More> Mobile Networks
Now go to Network Operators, Might take a couple of minutes to scan, once a list shows up. Select the first option.
Now go back and choose the wap.cingular APN.
Also, if you want to get on 2G, the "Use only 2G Networks" is now able to be checked as well.
These options will reset after a reboot and toggling between Airplane mode.
Click to expand...
Click to collapse
Interesting so you just have to do the network operator thing? I've gone into that menu before and tried to check 2g and it never let's me, but I've never gone into network operators section. Will try tomorrow!
Sent from my Nexus 7
AacidusX said:
You can on AOSP.
System Settings> More> Mobile Networks
Now go to Network Operators, Might take a couple of minutes to scan, once a list shows up. Select the first option.
Now go back and choose the wap.cingular APN.
Also, if you want to get on 2G, the "Use only 2G Networks" is now able to be checked as well.
These options will reset after a reboot and toggling between Airplane mode.
Click to expand...
Click to collapse
Good to know. Question though...does the wap.cingular APN still drop connections?
AacidusX said:
You can on AOSP.
System Settings> More> Mobile Networks
Now go to Network Operators, Might take a couple of minutes to scan, once a list shows up. Select the first option.
Now go back and choose the wap.cingular APN.
Also, if you want to get on 2G, the "Use only 2G Networks" is now able to be checked as well.
These options will reset after a reboot and toggling between Airplane mode.
Click to expand...
Click to collapse
Holy cow it worked broseph! I went into Network Operators. It took about 2 minutes to load the list, then showed three AT&Ts and a T-Mobile. I picked the first AT&T.
Then I tested 2g by putting a check mark in the force 2g box, and sure enough, it worked. I then chose GSM/WCDMA preferred, and sure enough, it forced HSPA+ without even having to choose the wap.cingular APN (in fact, I am using the "phone" APN).
Any downsides to selecting the network operator that way? I'm pretty sure AT&T does not roam onto T-Mobile in any event, so off the top of my head, I can't think of any downside. Would be curious if anybody can think of any downsides to forcing HSPA+ this way.
I personally will probably leave it on LTE most of the time anyways... I just wanted a method to force 2g or HSPA for the few times that I am in a location with weak LTE and the phone kills its battery by switching back and forth between LTE and HSPA. Awesome to finally have one.
AacidusX said:
You can on AOSP.
System Settings> More> Mobile Networks
Now go to Network Operators, Might take a couple of minutes to scan, once a list shows up. Select the first option.
Now go back and choose the wap.cingular APN.
Also, if you want to get on 2G, the "Use only 2G Networks" is now able to be checked as well.
These options will reset after a reboot and toggling between Airplane mode.
Click to expand...
Click to collapse
Isn't that what I said just above? Except you don't need to change APNs. Thanks for clarifying some of the menu options though.
phositadc said:
Holy cow it worked broseph! I went into Network Operators. It took about 2 minutes to load the list, then showed three AT&Ts and a T-Mobile. I picked the first AT&T.
Then I tested 2g by putting a check mark in the force 2g box, and sure enough, it worked. I then chose GSM/WCDMA preferred, and sure enough, it forced HSPA+ without even having to choose the wap.cingular APN (in fact, I am using the "phone" APN).
Any downsides to selecting the network operator that way? I'm pretty sure AT&T does not roam onto T-Mobile in any event, so off the top of my head, I can't think of any downside. Would be curious if anybody can think of any downsides to forcing HSPA+ this way.
I personally will probably leave it on LTE most of the time anyways... I just wanted a method to force 2g or HSPA for the few times that I am in a location with weak LTE and the phone kills its battery by switching back and forth between LTE and HSPA. Awesome to finally have one.
Click to expand...
Click to collapse
Yes, it works. I use this all the time. No need to change APNs either. I've never noticed any problems with this. Once in a blue moon I have to go and redo the network operator part but I've never figured out the exact reason. I have a MicroCell due to poor coverage so I often elect to turn off LTE at home and re-enable when I'm out and about. I've also traveled all over the country and never had an issue I would equate to me manually selecting the network operator.
romracer said:
Isn't that what I said just above? Except you don't need to change APNs. Thanks for clarifying some of the menu options though.
Click to expand...
Click to collapse
Haha yes reading back to your original post that is basically what you said. But since you didn't say "network operator" it didn't register for me even though it's now clear that's what you meant =P
Thanks for the help.
romracer said:
Isn't that what I said just above? Except you don't need to change APNs. Thanks for clarifying some of the menu options though.
Yes, it works. I use this all the time. No need to change APNs either. I've never noticed any problems with this. Once in a blue moon I have to go and redo the network operator part but I've never figured out the exact reason. I have a MicroCell due to poor coverage so I often elect to turn off LTE at home and re-enable when I'm out and about. I've also traveled all over the country and never had an issue I would equate to me manually selecting the network operator.
Click to expand...
Click to collapse
Thank you. Now I can finally have my "cake and eat it too". Did not even think to try these methods. Thank you for your information. This is so much easier than on stock rom...with the goodness of all that is AOSP.
I just did a test to see idle drain overnight on HSPA and it was actually worse than LTE. On LTE I drop about 7% overnight. Last night on HSPA I dropped 12% in 9 hours. Better battery stats showed 98% deep sleep, too, which is about the same as on LTE.
Anybody else ever try this? Curtis if those results are normal-i would have expected less drain on HSPA.
Sent from my SAMSUNG-SGH-I747
phositadc said:
I just did a test to see idle drain overnight on HSPA and it was actually worse than LTE. On LTE I drop about 7% overnight. Last night on HSPA I dropped 12% in 9 hours. Better battery stats showed 98% deep sleep, too, which is about the same as on LTE.
Anybody else ever try this? Curtis if those results are normal-i would have expected less drain on HSPA.
Sent from my SAMSUNG-SGH-I747
Click to expand...
Click to collapse
It actually depends on so much more than your data, there can be apps running in the background, bad signal, etc.
BWolf56 said:
It actually depends on so much more than your data, there can be apps running in the background, bad signal, etc.
Click to expand...
Click to collapse
My signal was about -70 dBm (ie, very good) and better battery stats showed 98% deep sleep.
In any event, it was running the same apps as it was the night before when it lost only 7% on LTE. I'm just surprised LTE idle drain was less than HSPA under identical circumstances and was wondering if anybody else experienced the same?
Sent from my SAMSUNG-SGH-I747
phositadc said:
My signal was about -70 dBm (ie, very good) and better battery stats showed 98% deep sleep.
In any event, it was running the same apps as it was the night before when it lost only 7% on LTE. I'm just surprised LTE idle drain was less than HSPA under identical circumstances and was wondering if anybody else experienced the same?
Sent from my SAMSUNG-SGH-I747
Click to expand...
Click to collapse
It could be coming from your carrier and their towers. If you really wanna save battery, set it to 2G overnight. Also, 4G is only a battery drainer when it's being used, which it isn't much overnight.
BWolf56 said:
It could be coming from your carrier and their towers. If you really wanna save battery, set it to 2G overnight. Also, 4G is only a battery drainer when it's being used, which it isn't much overnight.
Click to expand...
Click to collapse
+1. I set to 2G every night. Of course I also always have switched off data and wifi because I don't care about emails and other misc stuff while I sleep. I have slightly better 2G reception in my home than 3G or 4G so this helps even more on battery savings. Cut my battery drain nearly in half (6-8 hours I may get a 3% drain or an absolute max of 4% if I keep snoozing my alarm).
This doesn't work on my AOSP device, I cannot change Network Type or check the "Use 2G Networks only" box. What am I doing wrong?
AacidusX said:
You can on AOSP.
System Settings> More> Mobile Networks
Now go to Network Operators, Might take a couple of minutes to scan, once a list shows up. Select the first option.
Now go back and choose the wap.cingular APN.
Also, if you want to get on 2G, the "Use only 2G Networks" is now able to be checked as well.
These options will reset after a reboot and toggling between Airplane mode.
Click to expand...
Click to collapse
Wow this works
I think I've always been too impatient to wait 60 seconds for the network operators to load lol
But props im not sure if this is recently discovered but I've spent a lot of time searching for how to disable lte and could never figure it out.
Actually, got it to work. Picking the second "AT&T" from the network operator list allowed me to toggle the other settings. This is a big deal for me because my area has "partial" 4G coverage and my phone prefers a poor, slow 1 bar LTE signal over 5 bar HSPA+, thanks a lot!
wap.cingular will go in and out every 5 minutes and when i enable wifi and turn it off, it takes a good 1-2 minutes to regain connection. (On TW)