Database Users

stop going from 3g/HSPA/3.5g/"4g" to Edge

I don't think this was working before the update, but now u can enter the
*#*#4636#*#* command and select WCDMA only to stay on 3/3.5g.
And before anyone asks
WCDMA only means 3g and 3.5g which means if your signal is strong enough, HSPA+/4g

Im just curious where do u enter that code?
Sent from my T-Mobile G2 using XDA App

sundar2012 said:
I don't think this was working before the update, but now u can enter the
*#*#4636#*#* command and select WCDMA only to stay on 3/3.5g.
And before anyone asks
WCDMA only means 3g and 3.5g which means if your signal is strong enough, HSPA+/4g
Click to expand...
Click to collapse
in that case, shouldn't it be WCDMA Preferred?.... if you end up in a EDGE... only area...?
also... I thought GSM Auto PRL.... was the best option...

G1rome said:
Im just curious where do u enter that code?
Sent from my T-Mobile G2 using XDA App
Click to expand...
Click to collapse
Dialer.
(ten char).

it worked before the update...
Sent from my T-Mobile G2 using XDA App

Fair warning... this move will impact your battery life heavily.

gsm auto prl can save u a bit of battery life but usually prefers edge if the 3g signal isn't strong enough.
Wcdma only wont allow for a 3g to edge fluctuation. It will force 3g. Problem is, if your in an area with poor coverage it'll be either 3g or nothing and you may find yourself with no connection at all since the phone wont bring u to edge.
Wcdma preffered is like the opposite of gsm auto prl. It will prefer 3g.

sheek360 said:
gsm auto prl can save u a bit of battery life but usually prefers edge if the 3g signal isn't strong enough.
Wcdma only wont allow for a 3g to edge fluctuation. It will force 3g. Problem is, if your in an area with poor coverage it'll be either 3g or nothing and you may find yourself with no connection at all since the phone wont bring u to edge.
Wcdma preffered is like the opposite of gsm auto prl. It will prefer 3g.
Click to expand...
Click to collapse
Thanks sheek, I guess my best bet would be to good with WCDMA preferred, since reception is shaky in my area...

I think this might be better since it will waste less energy capturing a weak edge signal in a weak area.

working so far. ill report bat life in due time. i cant see how it would really affect it. i hate when my g2 hits edge. if by not using it because of edge saves battery then im fine with a dying battery. i have spares and extended bats anyway
Sent from my T-Mobile G2 using XDA App

funkadesi said:
Thanks sheek, I guess my best bet would be to good with WCDMA preferred, since reception is shaky in my area...
Click to expand...
Click to collapse
Yup. That's exactly what I do too.
I have a friend who lives in Philly; one of the best tmobile footprints exist in this city. Wcdma only and wcdma prefer netted no gains or losses except when he crossed and passed Camden new jersey.

Or search "radioinfo" in the market and get the app named network that pops up in the search.
Sent from my T-Mob G2

sheek360 said:
gsm auto prl can save u a bit of battery life but usually prefers edge if the 3g signal isn't strong enough.
Wcdma only wont allow for a 3g to edge fluctuation. It will force 3g. Problem is, if your in an area with poor coverage it'll be either 3g or nothing and you may find yourself with no connection at all since the phone wont bring u to edge.
Wcdma preffered is like the opposite of gsm auto prl. It will prefer 3g.
Click to expand...
Click to collapse
That's not the only difference between the modes.
WCDMA Only will only lock in the 3G signals and switch over if there is no more signal for 3G reception.
-Only use this if you're in a metropolitan area or are covered in abundant 3G signals.
WCDMA Preferred will drain more battery, the reason being that it'll scan the airwaves constantly in search of better 3G signals. You are right about it having a wider 3G signal threshold.
-Use this if you're in a 3G abundant city but not where if you're noticing frequently 3G to E switching as it'll adversely kill your battery.
GSM Auto PRL will shrink the threshold for 3G signals as well as less frequent scans for better signal. Generally E to 3G/H transitions happens on 1.5 to 2 bars of 3G signal, but the phone will remain on 3G unless there is an EDGE signal that is better and thus may provide better data transfer speeds or if 3G/H signal is gone.
-Benefits for battery life but not great when better signal is a necessary. Would not recommend this mode if signal is scattered.
As you can tell from my city in my sig, I have a choice between the three, I went with GSM Auto PRL due to battery life being of importance to me as I'm not necessarily next to a tap in 8 hour gaps.
Hope this helps better than my original post.

dragginblazer said:
Or search "radioinfo" in the market and get the app named network that pops up in the search.
Sent from my T-Mob G2
Click to expand...
Click to collapse
Or the "Network" app.

xmasguy said:
it worked before the update...
Sent from my T-Mobile G2 using XDA App
Click to expand...
Click to collapse
confirmed xxxxxxx

I have never even touched an HSPA+ connection and I live in an area where it's apparently abundant.
Switched SIMs for a newer one and still nothing. I was told to wait for the 2nd OTA that's coming out by the 8th (And I'm still calling BS on that)
Why in the hell would they push out 2 different OTA's in 1 week for a single device?

I'm hesitant to do this because I don't know if it is my phone being flakey or the actual area. According to TMobile's data coverage website I am in the middle of a massive solid high speed zone... but I constantly flake to Edge.
I don't want to change this setting and it cut out on me entirely, that it may be the actual area. But I guess all I can do is try :shrug:

The one thing I've noticed about the phone is that signal drops when holding it to use the keyboard, if this information's any help.

I found I was hemhoragging battery at some point with 50% no signal according to cell standby. But it wasn't caused by selecting WCDMA only - i am bathed in hspa/umta. Instead I turned on airplane mode while plugged in, waited a bit, then off, then unplugged. Then restarted phone to recovery (clockwork), wiped battery stats, and restarted. Running fine now.

Whats up with Tmo network ?

Both of my phones cycle from 3G to EDGE to weak signal.....this is MA in full 3G area

1- Different Modem or Kernel
2- Change ROMS
3- Your phone sucks bawls.
either of those.

xriderx66 said:
1- Different Modem or Kernel
2- Change ROMS
3- Your phone sucks bawls.
either of those.
Click to expand...
Click to collapse
I have 2 different phones and it started about 30-40 minutes ago on both

kolyan said:
I have 2 different phones and it started about 30-40 minutes ago on both
Click to expand...
Click to collapse
Are both Phones running the same rom, same modems etc?
If yes, then its probably a network issue from TMO themselves, and you should call them to ask them if anything is going on, and if nothing is, they'll either:
1) give you instructions on how to get better signal
2) give you a little modem thing for better signal that you connect on your PC.
i have the little modem thing, its like a little cell tower i was part of the BETA program.

interesting seeing this thread because bout an hour ago I lost my data connection and camt get it back. not this first time this has happened. l

Then for sure its a TMO problem, not yours.
Call them up, ask them whats going on, and get a answer.
It's perfect here in Texas for me.

I had the same problem too, but i went to mobile network via settings and switch network mode to gsm instead of gsm/wdmca or something like that. worked for me.

looks like they fixed it now.....now get all bars

At around 9-10 est I had the same problem. I had full bars but the data was slowed. Its better now though. Maybe some work being done?
Sent from my SGH-T959

Here the past few days, my data, which is usually around or about 2-3mb down and .6mb up has been at 5.8-6mb down and 1.5-3mb up

I have to set my network settings to wdcma only to avoid constantly switching to edge. I only switch to auto mode when im traveling.
Sent from my SGH-T959 using XDA Premium App

Here in Puerto Rico it has been hell on all of my family phones.Starting with call not wanting to go out,many times i get a message saying all circuits are busy.And then something incredibly weird,i call some one and all you hear is like a bunch of sound like they are from an old PC dial up modem but not quite in that patter and fast and you hear like some one is breathing at the same time.
Like some estrange sounds use in movies to simulate Alien voices or some sh** like that,i tough it was my phone,i am running Toxic Fire,but my wise have also heard it and his Vibrant isn't rooted and doesn't have any custom rom,and also my friend which is on AT&T hear it when i call it a few days ago.
And yes Data rates had been to low at times.

Im in florida and had some bad reception issues from like 5pmest Friday till 12pmest Saturday. Don't know if its related or not.
Sent from my SGH-T959 using XDA App

That happened to me three times last week and this week. I had to wipe davike.

kolyan said:
Both of my phones cycle from 3G to EDGE to weak signal.....this is MA in full 3G area
Click to expand...
Click to collapse
I'm in mass too, 3g just sucks here they need more towers
Sent from my SGH-T959 using XDA App

kcp877 said:
I'm in mass too, 3g just sucks here they need more towers
Sent from my SGH-T959 using XDA App
Click to expand...
Click to collapse
Its spotty. 3g is fast where I live in Framingham, but I noticed in other areas in Framingham 3g is as slow as EDGE, and some places in Newton and Brookline only have EDGE.....I mean its 4G era and we should have almost 100% 3G coverage by now. I dont see the point moving on to 4G, I would be MUCH more happy with full 3G in MA

It happened to me a few times this week (DC Area) and I thought there was something wrong with my phone. After rebooting my phone for a few times, and playing with network mode, and lastly checking my wife's BB, I realized it must have been T-mobile network.

I've had this problem for a while and finally after numerous calls to T-Mo i figured it out.
I live inbetween a crappy Edge tower apparently in the boonie area about a mile away, and also a 3g tower about the same distance in the other direction in civilization.
It constantly switches on me when i'm at home to whatever it feels like, usually edge... I think just to get under my skin on purpose.
When i finally realized that I went to settings - wireless and network - Mobile networks - Network mode - then put it on WCDMA only. Boom 3g all day.
If you happen to go into an area and you lose service, do the same thing, but instead of selecting WCDMA only, put it on auto and you will be able to use edge service as well again.

Terrible Cell Service

Sitting next to my sister in the car and noticed her S4 has full bars meanwhile my G2 has 1 and has 1x for data and she has a strong connection to LTE. I checked status and idk which relates to service but my dBm was 110 while hers was in the 90s and my asu was 1 and hers was 45. My service has been pretty terrible everywhere. I am running green devils latest CM nightly and I believe I flashed the latest radio in the development thread. Please help! Can't even send MMS in my house because not only is my house get bad service but my phone has really been doing a bad job getting good reception. Wondering if anyone knows what's up.

you fail to mention if same network
number one differentiator bro to mention

bachera said:
you fail to mention if same network
number one differentiator bro to mention
Click to expand...
Click to collapse
Sorry obviously same network

datsyuk said:
Sorry obviously same network
Click to expand...
Click to collapse
well you would be amazed what people ask. I have learned if user doesnt state it he hasnt though about it. How obvious it may seem
Maybe bad antenna. Also check which mode you have set for network, gsm,2g etc.
also note that some phones show levels differently, their multiple bars could be same as yours.

bachera said:
well you would be amazed what people ask. I have learned if user doesnt state it he hasnt though about it. How obvious it may seem
Maybe bad antenna. Also check which mode you have set for network, gsm,2g etc.
also note that some phones show levels differently, their multiple bars could be same as yours.
Click to expand...
Click to collapse
Must be something strange, I set the mobile network to LTE (recommended) and it's weird I've been trying out different modems too flashing those, the phone will boot up and have LTE, then it will disappear after a minute or so and I will literally never see LTE again where my town I have LTE EVERYWHERE.

datsyuk said:
Must be something strange, I set the mobile network to LTE (recommended) and it's weird I've been trying out different modems too flashing those, the phone will boot up and have LTE, then it will disappear after a minute or so and I will literally never see LTE again where my town I have LTE EVERYWHERE.
Click to expand...
Click to collapse
yeah that sounds like the low reception bug some people have been talking about.
you try disabling fast dormancy. See if it works, might end up using more power though. Also try disabling the power saving option. Lte is less battery friendly so phone could be forcing itself to lower power mode when not using data. you should see it come back the moment you use data, if thats it.
Also check if ypur apn settings are correct.
Also check your provider. They might be limiting you on their end.

Originally Posted by datsyuk
Must be something strange, I set the mobile network to LTE (recommended) and it's weird I've been trying out different modems too flashing those, the phone will boot up and have LTE, then it will disappear after a minute or so and I will literally never see LTE again where my town I have LTE EVERYWHERE.
Click to expand...
Click to collapse
yeah that sounds like the low reception bug some people have been talking about.
you try disabling fast dormancy. See if it works, might end up using more power though. Also try disabling the power saving option. Lte is less battery friendly so phone could be forcing itself to lower power mode when not using data. you should see it come back the moment you use data, if thats it.
Also check if ypur apn settings are correct.
Also check your provider. They might be limiting you on their end.
Click to expand...
Click to collapse
bug its in all g2 phones?do you have more info i am going to buy this phone next week! so i need to know..i have bad reception at work.. /: and if the phone has bad reception so its not worth buying /:
Sent from my R800i using xda app-developers app

I know for me reception is fine till I put my case on... in strong cell areas all is good no noticeable effect but at home where it's a fringe area the case comes off... its only a thin featherlite case to protect against scratches
Sent from my LG-D800 using XDA Premium 4 mobile app
---------- Post added at 08:16 AM ---------- Previous post was at 07:51 AM ----------
So did a little more testing with my warranty replaced g2 and the signal drop issue is gone... I just got my replacement in the mail last night and didn't mess with it much till just now
Sent from my LG-D800 using XDA Premium 4 mobile app

reception for me is awesome, unless I am on cheap low reception networks or in the outback btw
do you have roaming enabled btw? Disable it if you do.
disable power saving options
try disabling fast dormancy, check apn etc

[Q] N910U On T-Mobile/ Weak Signal/ dropped signal issues

Hey guys just wondering if there are any exynos users who have T-Mobile in the USA (Atlanta for me). Im using the n910U and i get a 4G signal pretty much everywhere but out of nowhere it will drop to 1 bar, and then drop signal all together. Its getting quite annoying as it was said that the unlocked version was supposed to work with T-Mobiles LTE bands. It also happens when using the download booster which is also a pain. Any suggestions on improving the signal? thanks in advance.

Bump. Anyone have any advice to remedy this?

Im planning on buying the sm-n910u aswell but I want to use it with metro pcs which should be using the same network as tmobile, I dunno if ur problem is the phone or network hiccups but im hoping it will work here in nyc

chukwu77 said:
Hey guys just wondering if there are any exynos users who have T-Mobile in the USA (Atlanta for me). Im using the n910U and i get a 4G signal pretty much everywhere but out of nowhere it will drop to 1 bar, and then drop signal all together. Its getting quite annoying as it was said that the unlocked version was supposed to work with T-Mobiles LTE bands. It also happens when using the download booster which is also a pain. Any suggestions on improving the signal? thanks in advance.
Click to expand...
Click to collapse
A few things to look at
Try 3g only awhile, you may have a marginal 4g signal and the phone keeps switching back and forth
Try to find out which bands are coming off each tower in your area as well as tower location
You are one of the first to use the new intel modem in the usa for this phone
Keep us posted

Back in the HSPA days I had nothing but international devices and frequently experienced what you described. All the carriers have different networking h/w and topology because they all grew through acquisitions. If I left my home town where I had decent coverage when my flight would land in another region I'd have to reboot my phone to get it to connect to the network. When doing speed tests with friends using "real" AT&T phones their phones were always faster and more reliable. It was only an issue less than 10% of the time so it wasn't a big deal (to me). For better or worse the carrier's optimize the radios in their phone for their specific networks. So, at least in theory, a carrier phone (used on the carrier that provided it) is always going to deliver the best performance.

I got my N910U from Hong Kong, and my 4G signal is as weak as hell, though i'm a China Unicom user.
My iPhone 5s has much better signal than it, same SIM same network.:crying:
There must be something very wrong with the Exynos version of Note 4.
Hope Samsung could fix this ASAP.

Yea it happens pretty randomly in my house and when i leave to drive around town. The signal will be 4 bars on 4G then suddenly just drop connection all together for about 10 seconds. its a real drain on the battery when it does it so often. Im wondering if its a software issue with the radio in the n910u? Since we have root already we can load a different radio on it and see if it improves?

Got the same thing going on with my 910U on Fido Network in Canada. I must note it seems like it doesn't affect performance except for a network speed, no issues during the calls but 4G signal is at 1 bar most of the time unless I'm outside in downtown or something. I must note 3G signal was almost always at full strength. Not sure what is going on here but I thing we really could use some modem update here lol

chukwu77 said:
Hey guys just wondering if there are any exynos users who have T-Mobile in the USA (Atlanta for me). Im using the n910U and i get a 4G signal pretty much everywhere but out of nowhere it will drop to 1 bar, and then drop signal all together. Its getting quite annoying as it was said that the unlocked version was supposed to work with T-Mobiles LTE bands. It also happens when using the download booster which is also a pain. Any suggestions on improving the signal? thanks in advance.
Click to expand...
Click to collapse
I also have hongkong N910U model and facing signal issue on regular basis. When Problem appear I can not receive calls anymore and when try to make call , signal disappear altogether. After I retry a couple of times then it works fine but only solution is a restart to get the full strength. it feels like it is a software issue rather hardware but still keeping my device in observation. I feel when I enable power save mode only after that this problem appears. trying not to enable power save mode and test the issue for few days.
Kindly also share your own experiences to solve this issue temporarily.

chukwu77 said:
Hey guys just wondering if there are any exynos users who have T-Mobile in the USA (Atlanta for me). Im using the n910U and i get a 4G signal pretty much everywhere but out of nowhere it will drop to 1 bar, and then drop signal all together. Its getting quite annoying as it was said that the unlocked version was supposed to work with T-Mobiles LTE bands. It also happens when using the download booster which is also a pain. Any suggestions on improving the signal? thanks in advance.
Click to expand...
Click to collapse
hi i had this problem too when i used the fingerprint sensor.....then i turned it off and everything was ok..:laugh:
maybe its a root problem with the fingerprint sensor..

Okarina26 said:
hi i had this problem too when i used the fingerprint sensor.....then i turned it off and everything was ok..:laugh:
maybe its a root problem with the fingerprint sensor..
Click to expand...
Click to collapse
So you have the 910U, exynos working with Tmobile in the US? Getting both 3g and 4g successfully?

bjrmd said:
So you have the 910U, exynos working with Tmobile in the US? Getting both 3g and 4g successfully?
Click to expand...
Click to collapse
i have 3G only..!!

i get a 4G signal pretty much everywhere but out of nowhere it will drop to 1 bar, and then drop signal all togethe
Click to expand...
Click to collapse
If have exactly the same issue !!!!
Start with full signal strength and going down to the lowest strength and minutes later no signal !!!
Reboot or Airplane mode can undo this, but the cycle starts allover: Full strength, less strength and no signal.
Tried with 3 different carriers !!
And 2 Note 4's !!
I have the Snapdragon version SM-N910F
What is going on ??
---------- Post added at 06:23 PM ---------- Previous post was at 06:18 PM ----------
chukwu77 said:
Hey guys just wondering if there are any exynos users who have T-Mobile in the USA (Atlanta for me). Im using the n910U and i get a 4G signal pretty much everywhere but out of nowhere it will drop to 1 bar, and then drop signal all together. Its getting quite annoying as it was said that the unlocked version was supposed to work with T-Mobiles LTE bands. It also happens when using the download booster which is also a pain. Any suggestions on improving the signal? thanks in advance.
Click to expand...
Click to collapse
If have exactly the same issue !!!!
Start with full signal strength and going down to the lowest strength and minutes later no signal !!!
Reboot or Airplane mode can undo this, but the cycle starts allover: Full strength, less strength and no signal.
Tried with 3 different carriers !!
And 2 Note 4's !!
I have the Snapdragon version SM-N910F
What is going on ??

altenae said:
If have exactly the same issue !!!!
Start with full signal strength and going down to the lowest strength and minutes later no signal !!!
Reboot or Airplane mode can undo this, but the cycle starts allover: Full strength, less strength and no signal.
Tried with 3 different carriers !!
And 2 Note 4's !!
I have the Snapdragon version SM-N910F
What is going on ??
---------- Post added at 06:23 PM ---------- Previous post was at 06:18 PM ----------
If have exactly the same issue !!!!
Start with full signal strength and going down to the lowest strength and minutes later no signal !!!
Reboot or Airplane mode can undo this, but the cycle starts allover: Full strength, less strength and no signal.
Tried with 3 different carriers !!
And 2 Note 4's !!
I have the Snapdragon version SM-N910F
What is going on ??
Click to expand...
Click to collapse
I have the N910U note 4 and having the same problem.

bobgoh said:
I have the N910U note 4 and having the same problem.
Click to expand...
Click to collapse
Swapped the note 4 again.
The third one and a new simcard fixed the issue !!
3 to 4 bars signal strength/

I have this problem since yesterday, it seem like the Note 4 is dropping the Sim card. In panama we have a provider that will need to register the sim card with names and stuff but i never did and every time i turn off the phone it will pop out that menu from the sim card.
Yesterday it was popping out every 20mins so i assume that the note 4 is dropping the Sim card. i didn't have that problem when i started using it. its been only a week and this problem came out. I got no signal, with the circle and a dash to full signal and drop signal back... all day, I can't even play online or watch youtube or other things. But it work fine with wifi!

I changed providers no more issues for me. Gonna change back next week and a new simcard also

I am in Colombia and my phone always is with one bar of signal, but when I am making or receiving a call it get full bars of signal. Do your phone do that? (I have the N910U)
Sent from my SM-P600 using XDA Free mobile app

Have this device on Bell in Canada. Not having these issues at all, but haven't rooted.

Phone keeps switching between 4G and LTE.

Received the phone today. It keeps switching between 4G and LTE in my home. When I walk around the house, it changes constantly. It might be LTE in the living room one minute, and when I circle around and go back there, its on 4G. Does this all over the house. I am two blocks away from a TMobile tower. My Samsung Galaxy S6 stays on LTE. Wonder what the problem is? As of now, its a deal breaker for me and the phone might go back unless there is a satisfactory solution.

I also have the same problem. It always switches in SIM card status between HSPA and UMTS like it has some kind of a bug. Wifi connections works fine, can make calls and SMS, but the big problem is that I can't connect to the Mobile internet. Please can someone help because this is really disappointing.
---------- Post added at 09:48 AM ---------- Previous post was at 09:35 AM ----------
Also this constantly switching and searching for network is draining my battery very fast. So I need to switch to 2G to stop the consumption.

I have the 6gb Version and the Chinese Stock Rom and with Tmobile i got 4g and in a City area i get 4g+ but it always works. Do you have a Shop Rom installed.

lowrider_05 said:
I have the 6gb Version and the Chinese Stock Rom and with Tmobile i got 4g and in a City area i get 4g+ but it always works. Do you have a Shop Rom installed.
Click to expand...
Click to collapse
I don't know which Rom is in my phone, but I think it's Shop Rom because I received it from Honorbuy.com. My phone model is LEX720 6GB ram & 64GB storage.

mine ( dual sim, 6g/64g) was initially from the shop and it had customer rom. but the 4g was very stable. however, i still flashed the factory rom 017s . but with either rom, the phone have been working fine on 4g network.

Mine does 4G and Let switching too. Seems to prefer 4G and kicks up to LTE if needed based on demand. 4G has a theoretical speed that no provider even dishes out that I know of so I wouldn't worry about that. Battery drain could be an issue, but doesn't seem to hurt mine at all (US version on T-Mobile in Dallas). In fact I suspect it does that to save battery, trying to go with whichever is strongest. Total guess though.
Sent from my LEX727 using XDA-Developers mobile app

I manage to fix data connection by setting the real APN address. Now 4g works well and there is no switching.

atlas356 said:
I manage to fix data connection by setting the real APN address. Now 4g works well and there is no switching.
Click to expand...
Click to collapse
How do u get the real APN number. I am on T-Mobile
LeEco Pro3

When you guys see LTE go to 4G, do you see a little + sign behind the 4G icon? If so, that's normal. It's indicating that you're getting TWO simultaneous LTE connections at once (or in other words, Carrier Aggregation is active). Try doing a speedtest and you'll see pretty quick speeds. It's one of the first things I noticed when I got mine.

toanau said:
How do u get the real APN number. I am on T-Mobile
LeEco Pro3
Click to expand...
Click to collapse
You should ask on T-Mobile to give you APN number. I got it from my own operator.

I might be wrong here, but isn't LTE and 4g the same thing?
or is it like HSPA+ and 3g (which is not the same thing)
i get 4g everywhere i go, it never changes to 3g or HSPA+ i can't really complain about that, i do however also live in denmark with GSM

I had to change the APN on mine too. Kept going between 3g 4g and no service.

The new ipdate fix this problem. The switch between 4g and lte. Now its lte every time.