Database Develop

[Q] Low signal, call drops... disable 1900MHz band?

I have a very weak reception, ranging from from -90db down to -105db, inside my condo with my Bell i9000m leading to calls drop.
Dialing *#0011# on the dial pad and walking around the place, I noticed the phone kept switching between the 1900 and 850 bands back and forth.
I kinda suspect the calls drop happen when the phone switches from one band to the other, so I'm wonderring: is there's a way I could set the phone so that it only uses the 850 band when I'm home?
Since the 850 is better at penetrating walls, wouldn't that help a little?
On older phones, non-smart ones, there usually was such a parameter to do that.
Eclair 2.1 JH2 no root, no lag fix

keypad fix
I had exactly the same problem plus my phone would turn off as well when it lost its signal for prolonged periods of time. I found a post on this forum which gave a keypad code to type in.My phone has worked perfectly since then. Unfortunately I can't find the post to link it to you. I'm sure if you search for a while you could find it.
Hope this helps a little.

In the dialer: *#*#197328640#*#*
1. Debug 2. Phone control 3. Network control 4. Band selection. (not the menu#'s)
I tried WCDMA all and was getting the shut off when phone loses signal when asleep. Just set it back to auto but might try setting it to 850 and see what happens. This doesn't happen too often, I get full bars at home and 2-3 bars at work but do lose signal sometimes.
Hope this helps and let us know how it works for you.
Sent from my GT-I9000M using XDA App

I selected 1900 fr att n wrks gud ty
Sent from my GT-I9000 using XDA App

Apparently the problem was the 850MHz band
Forced my cell to use the WCDMA 1900MHz band instead and tadam... no more calls drop.
By the way, there a shortcut to get to the band selection dialog: *#*#2263# or *#*#BAND# if you prefer.

Q: Simultaneous Data and Voice on T-mobile HTC one

HI everyone --- just picked up my phone tonight from tmobile. however, the data drops every time i'm on a call. no 2g, 3g, or 4g indicator after about 10 seconds of initiating a call.
just trying to figure out if i have a bad phone or if others are also noticing this issue.
any feedback is much appreciated. I may switch to At&t and get the optimus g pro if this is "feature" of the HTC one

biswasd said:
HI everyone --- just picked up my phone tonight from tmobile. however, the data drops every time i'm on a call. no 2g, 3g, or 4g indicator after about 10 seconds of initiating a call.
just trying to figure out if i have a bad phone or if others are also noticing this issue.
any feedback is much appreciated. I may switch to At&t and get the optimus g pro if this is "feature" of the HTC one
Click to expand...
Click to collapse
If you're on EDGE it can only do one at a time not both.

SmiLey497 said:
If you're on EDGE it can only do one at a time not both.
Click to expand...
Click to collapse
Correct. Not on 2G yes on 4G.

SmiLey497 said:
If you're on EDGE it can only do one at a time not both.
Click to expand...
Click to collapse
I hear ya....but it's happening from 4g to zero; 3g to zero....the data connection (regardless if it's locked onto 4g or not), just drops after a few seconds of being on the call.....

what does everyone have their data settings set to? under mobile data > network mode.....
mine was originally set to GSM/WCDMA/LTE auto....
I changed it to GSM/WCDMA AUTO since tmobile doesnt' have LTE where I live to save battery......
but the problem persists with all settings, even when I select teh LTE....
any thoguhts?

mine was originally set to GSM/WCDMA/LTE auto....
I changed it to GSM/WCDMA AUTO since tmobile doesnt' have LTE where I live to save battery......
but the problem persists with all settings, even when I select teh LTE....
any thoguhts?
Click to expand...
Click to collapse
Dial *#*#4636#*#* select phone info and see if it's set to GSM/WCDMA/LTE there as well.

I had that problem. Mine was set to CDMA/EvDo/GSM/WCDMA/LTE auto from factory. I did the above and set it to GSM/WCDMA/LTE auto and it fixed it for me.

Tidbits said:
I had that problem. Mine was set to CDMA/EvDo/GSM/WCDMA/LTE auto from factory. I did the above and set it to GSM/WCDMA/LTE auto and it fixed it for me.
Click to expand...
Click to collapse
where exactly is this setting? i entered *#*#4636#*#* and clicked on the three little dots in teh upper right hand corner....then i selected "select radio band".
A window popped up with "automatic" or "usa band". I selected "automatic".....but i don't see anywhere to select between GSM / LTE, etc. within this phone settings hidden menu..
help!
****Edit:***** never mind i found it however, mine was set by default to WCDMA......should I change it?

biswasd said:
where exactly is this setting? i entered *#*#4636#*#* and clicked on the three little dots in teh upper right hand corner....then i selected "select radio band".
A window popped up with "automatic" or "usa band". I selected "automatic".....but i don't see anywhere to select between GSM / LTE, etc. within this phone settings hidden menu..
help!
****Edit:***** never mind i found it however, mine was set by default to WCDMA......should I change it?
Click to expand...
Click to collapse
yes should be set to GSM/WCDMA/LTE auto or if you don't have LTE in your are just GSM/WCDMA auto.

Tidbits said:
yes should be set to GSM/WCDMA/LTE auto or if you don't have LTE in your are just GSM/WCDMA auto.
Click to expand...
Click to collapse
got it....THANK YOU TO EVERYONE for their replies....changed it now...but still -105dBm to -93dBm at best......
what's funny is that my work provided tmobile blackberry sitting right next to my HTC one has awesome signal right now.....i don't get it.....although the blackberry is a 3g blackberry at best with no 4g capability.
also, i have noticed that if i switch the ONE to GSM only, the signal jumps to -71dbm.....!!! so apparently the "4g" sucks here in northern cincinnati....

4G have low coverage in all countrys, only usa have widely 4G.
If you got 4G that means you got better internet speed not stronger signal.
Signal depends on internal antena which dosent care if signal is 2g,3g,4g.
Sent from my LT26i using xda app-developers app

Simultaneous Voice and Data HTC One on T-Mobile
After dialing *#4636#*#* my HTC One on T-Mobile is set to WCDMA preferred as we do not have LTE coverage yet.
Voice and Data works superfluously under "4G" HSPA+ 21. I tested both while making incoming and outgoing calls.
I was told to change it to GSM/WCDMA/LTE auto when they put LTE live in my area.

erg208 said:
After dialing *#4636#*#* my HTC One on T-Mobile is set to WCDMA preferred as we do not have LTE coverage yet.
Voice and Data works superfluously under "4G" HSPA+ 21. I tested both while making incoming and outgoing calls.
I was told to change it to GSM/WCDMA/LTE auto when they put LTE live in my area.
Click to expand...
Click to collapse
Hi there erg208, I've tried all of those settings and still no success. Only for a very short time (data will stay on anywhere from 3 seconds into the call to no more than 10 mins into the call....last night was a record with 30 mins into the call) but the moment I begin to do to much surfing or send one too many emails or Gtalk for too long it's like my phone just gives up and the data disconnects and at no point during my phn call will it ever reconnect. I have to hang up my call and INSTANTLY the data turns on with all 5 bars and an H signal. AND most times I have to restart the phn before I can get simultaneous voice and data again. Do u have this issue? May I please ask if you've done an extensive test with your simultaneous voice and data? Meaning have u actually been on a long enough call and seriously surfed the web, sent & received multiple emails, chatted on Gtalk and sent an MMS all during one call and it stay connected? That would be a real test b/c mine doesn't. And if your data does disconnect do u have to hang up the call for it to come back on?? And does it work again if you make another phone call without having to restart your phone? No matter what, having to do either of those things is unacceptable b/c I have NEVER had to with any of my previous HTC devices on Tmobile's network. And I'm a flight attendant so I'm all over this country receiving 3G, 4G and LTE signals and it does it no matter where I am, if I'm moving in a car or sitting perfectly still in the same area with good coverage. Pls let me know your full experience in testing this. I really appreciate your help! Thanks
---------- Post added at 03:41 AM ---------- Previous post was at 02:51 AM ----------
biswasd said:
got it....THANK YOU TO EVERYONE for their replies....changed it now...but still -105dBm to -93dBm at best......
what's funny is that my work provided tmobile blackberry sitting right next to my HTC one has awesome signal right now.....i don't get it.....although the blackberry is a 3g blackberry at best with no 4g capability.
also, i have noticed that if i switch the ONE to GSM only, the signal jumps to -71dbm.....!!! so apparently the "4g" sucks here in northern cincinnati....
Click to expand...
Click to collapse
Hi there biswasd, I've tried all of those settings and still no success. Only for a very short time (data will stay on anywhere from 3 seconds into the call to no more than 10 mins into the call....last night was a record with 30 mins into the call) but the moment I begin to do to much surfing or send one too many emails or Gtalk for too long it's like my phone just gives up and the data disconnects and at no point during my phn call will it ever reconnect. I have to hang up my call and INSTANTLY the data turns on with all 5 bars and an H signal. AND most times I have to restart the phn before I can get simultaneous voice and data again. Do u have this issue? May I please ask if you've done an extensive test with your simultaneous voice and data? Meaning have u actually been on a long enough call and seriously surfed the web, sent & received multiple emails, chatted on Gtalk and sent an MMS all during one call and it stay connected? That would be a real test b/c mine doesn't. And if your data does disconnect do u have to hang up the call for it to come back on?? And does it work again if you make another phone call without having to restart your phone? No matter what, having to do either of those things is unacceptable b/c I have NEVER had to with any of my previous HTC devices on Tmobile's network. And I'm a flight attendant so I'm all over this country receiving 3G, 4G and LTE signals and it does it no matter where I am, if I'm moving in a car or sitting perfectly still in the same area with good coverage. Pls let me know your full experience in testing this. I really appreciate your help! Thanks

electrash said:
4G have low coverage in all countrys, only usa have widely 4G.
If you got 4G that means you got better internet speed not stronger signal.
Signal depends on internal antena which dosent care if signal is 2g,3g,4g.
Sent from my LT26i using xda app-developers app
Click to expand...
Click to collapse
That is not true. We have decent LTE coverage here in UAE (inside the cities at least) and great 3G coverage even on highways.
I did have a similar issue that while on 4G data would drop if i receive a call but that's because 4G LTE does not support voice and my call gets "demoted" to GSM which does not support data+voice simultaneously.

Fix for losing LTE

After trying searching today countless apps and signal booster apps i finally found one that worked. I tried Viaero Toggle app from the play store and now have a constant 4g signal. I have tested 2 methods on the app. Tried a method setting my preferred network to just LTE and CDMA/LTE. Setting it to just LTE works except you have an X over your signal bars, CDMA/LTE doesnt.
1. Download the Viaero toggle app
2. Select phone information
3. Scroll down where it says preferred network
4. Select LTE or LTE/CDMA
This is for people who KNOW their supposed to have an LTE connection. I used to own a GS3 and had a constant LTE signal. Switching to the ONE my LTE constantly jumps from LTE to 3G which was my biggest gripe. Now I'm in love with my ONE all over again. So if you know you have this issue. This will help trust me.
Let me know your results. I really want to work for everyone because this has been pissing me off for the longest. I had even switched out for a second HTC one and they both had signal issues. If it doesnt help let me know and we can try other methods for different people.
The 2 pics i attached is one with just LTE and the other is LTE/CDMA

You know that X over the signal bars mean you no longer have a voice connection right? Kind of defeats the purpose of a phone
Sent from my HTCONE using xda premium

Jahspree said:
After trying searching today countless apps and signal booster apps i finally found one that worked. I tried Viaero Toggle app from the play store and now have a constant 4g signal. I have tested 2 methods on the app. Tried a method setting my preferred network to just LTE and CDMA/LTE. Setting it to just LTE works except you have an X over your signal bars, CDMA/LTE doesnt.
1. Download the Viaero toggle app
2. Select phone information
3. Scroll down where it says preferred network
4. Select LTE or LTE/CDMA
This is for people who KNOW their supposed to have an LTE connection. I used to own a GS3 and had a constant LTE signal. Switching to the ONE my LTE constantly jumps from LTE to 3G which was my biggest gripe. Now I'm in love with my ONE all over again. So if you know you have this issue. This will help trust me.
Let me know your results. I really want to work for everyone because this has been pissing me off for the longest. I had even switched out for a second HTC one and they both had signal issues. If it doesnt help let me know and we can try other methods for different people.
The 2 pics i attached is one with just LTE and the other is LTE/CDMA
Click to expand...
Click to collapse
The better way of doing this would be to use the ##DATA# shortcut (provided you have your MSL), but you certainly can do this.
BrianBaker said:
You know that X over the signal bars mean you no longer have a voice connection right? Kind of defeats the purpose of a phone
Sent from my HTCONE using xda premium
Click to expand...
Click to collapse
Not if you only use VOiP, but I don't disagree.

BrianBaker said:
You know that X over the signal bars mean you no longer have a voice connection right? Kind of defeats the purpose of a phone
Sent from my HTCONE using xda premium
Click to expand...
Click to collapse
If you just want to use WiFi tether purposes. You can. That's also why I gave the cdma/ltd option as well.

Rirere said:
The better way of doing this would be to use the ##DATA# shortcut (provided you have your MSL), but you certainly can do this.
Click to expand...
Click to collapse
Shortcut is *#*#4636#*#* NO need MSL

Pacemaker2 said:
Shortcut is *#*#4636#*#* NO need MSL
Click to expand...
Click to collapse
Thanks for the shortcut since I keep forgetting it. I just gave it a try. I was able to switch to CDMA LTE only and my LTE switched back on from 3G almost instantly. Sweet! Looks like I'll be using this feature quite often. :thumbup:
Sent from my HTC ONE using xda app-developers app

I got nothin'
Neither the App nor the menu has provided 4G / LTE. Funny thing is that on 4.3 ROM's I don't get LTE, but 4.2 and lower it's a non-issue. Any ideas?
Funny thing is I have no APN's. When I try to manually add them they don't save.

sslbaron said:
Thanks for the shortcut since I keep forgetting it. I just gave it a try. I was able to switch to CDMA LTE only and my LTE switched back on from 3G almost instantly. Sweet! Looks like I'll be using this feature quite often. :thumbup:
Sent from my HTC ONE using xda app-developers app
Click to expand...
Click to collapse
Lol I never memorised the numbers the way I memorised it was *#*#info#*#*
Sent from my One using xda premium

I normally set it to WCDMA only but after a while it automatically switches to WCDMA preferred which results in a loss of data and the Roaming symbol. Any way i can set it permanently to WCDMA only? I'm in India btw...

indy1811 said:
I normally set it to WCDMA only but after a while it automatically switches to WCDMA preferred which results in a loss of data and the Roaming symbol. Any way i can set it permanently to WCDMA only? I'm in India btw...
Click to expand...
Click to collapse
Dial *#*#4636#*#*
Scroll down and select preferred network type to be WCDMA Only

BrianBaker said:
You know that X over the signal bars mean you no longer have a voice connection right? Kind of defeats the purpose of a phone
Sent from my HTCONE using xda premium
Click to expand...
Click to collapse
Who uses their phone for talking? What is this 2005?

Yup, i set it to WCDMA only but for some weird reason it switches back to WCDMA preferred after a while. I do it using the same method you've described.

If I set my phone to lte cdma it goes to gsm as my days connection. Am I missing something here? Thanks
Sent from my HTCONE using Xparent Blue Tapatalk 2

raptoro07 said:
Who uses their phone for talking? What is this 2005?
Click to expand...
Click to collapse
Come in to say hello from 2005

htc n8 sprint cant change WCDMA preferred
hello friends, please i need your help.
I have a HTC M8, unlocked for gsm, with viper rom, s-off, super cid, replacing HTComand file ....
The problem is that I can not set as preferred gsm / wcdma / lte auto signal.
over and over again to be WCDMA preferred.
I press * # * # 4636 # * # * and change this, but do not leave it as fixed.
voice network works, but the calls are cut
I hope your help from chile

miltoneski said:
hello friends, please i need your help.
I have a HTC M8, unlocked for gsm, with viper rom, s-off, super cid, replacing HTComand file ....
The problem is that I can not set as preferred gsm / wcdma / lte auto signal.
over and over again to be WCDMA preferred.
I press * # * # 4636 # * # * and change this, but do not leave it as fixed.
voice network works, but the calls are cut
I hope your help from chile
Click to expand...
Click to collapse
Wrong forum, please go here.

help
StormyNight said:
Wrong forum, please go here.
Click to expand...
Click to collapse
could be a little more specific?
i dont know where find info about this.
thank´s

miltoneski said:
could be a little more specific?
i dont know where find info about this.
thank´s
Click to expand...
Click to collapse
The forum you're posting in right now is the Sprint HTC One M7 forum. You have the M8, therefore go to the Sprint HTC One M8 forum.

With the 4636 menu what setting should I be choosing to stay in 4G? I'm in Chicago and I have terrible 4G to 3G handoffs all the time.
Sent from my HTCONE using Tapatalk

[Q] is there a way to force LTE?

like my phone can just sit on 3G, in the same place,while not moving
but if i reboot my phone, it'll pop on to LTE (if its available in that area)
but i reboot it in known LTE areas (when showing 3G)
anyway to force LTE, without rebooting the phone?
or is there some time schedule where it checks to see if LTE is available that I can change?

Yes which model u have? Its in the secret menu
Sent from my LG-D959 using Tapatalk

Sprint version

SayWhat10 said:
Sprint version
Click to expand...
Click to collapse
I don't have the Sprint version so I don't know if this works but you can try https://www.youtube.com/watch?v=bSrtUw8D9_w as this method worked for the very similar LG G2 for Sprint.

I feel for you buddy because this phone is blazing fast on LTE
Sent from my LG-D959 using XDA Premium HD app

He didn't even have to say he was on the Sprint version.. I just knew. Hehe

Visa Declined said:
He didn't even have to say he was on the Sprint version.. I just knew. Hehe
Click to expand...
Click to collapse
Hahaha you're absolutely right. I knew just by reading the thread. Sprint is the worst! My HTC One on Sprint was amazing but I couldn't ever hold on to an LTE connection for more then 30 seconds. Unlimited data is useless if your only on their horribly slow 3g

Sprint does suck, if i didnt have 4 other people on my account that would have to get new phones/account etc, I would have been switched.
but that video i think was to turn on LTE, my LTE is on, but for some reason wouldnt search/connect to LTE when it was available all the time
however i went into my mobile connection settings, and changed it from "LTE/CDMA" to Global
now it seems to switch to LTE when its in an LTE area. LTE icon comes up without me having to reboot, i'll keep a watch on it for a few days to see if indeed that was the solution
by the way, anybody now what the "global" option is? compared to LTE/CDMA

SayWhat10 said:
Sprint does suck, if i didnt have 4 other people on my account that would have to get new phones/account etc, I would have been switched.
but that video i think was to turn on LTE, my LTE is on, but for some reason wouldnt search/connect to LTE when it was available all the time
however i went into my mobile connection settings, and changed it from "LTE/CDMA" to Global
now it seems to switch to LTE when its in an LTE area. LTE icon comes up without me having to reboot, i'll keep a watch on it for a few days to see if indeed that was the solution
by the way, anybody now what the "global" option is? compared to LTE/CDMA
Click to expand...
Click to collapse
I'm pretty sure the global setting is to allow it to connect to GSM carriers in the event that the device is unlocked and the APN is changed accordingly.

I have the same problem in brazil, looks like a problem with the Phone. I had a Samsung S4 that worked with full signal in 4G in my home, now that I moved to LG G Flex it also works full signal 4G in home, but when I move to some place where is Edge then go Back to home, it never moves back to LTE automatically. I need to restart or change the NetworkMode manually to make it back working in 4G.
I think the phone has a problem to automatic search and change the Network mode.

anyone know how to enable only lte yet? i've tried all different kinds of secret menu codes and cant figure it out.

Answer
How to access the hidden service menu on LG G Flex:
For AT&T: Go to dialer and enter 3845#*950#
For T-Mobile: Go to dialer and enter 3845#*959#
For Sprint: Go to dialer and enter 3845#*995#
Once you're in the hidden menu, go to LTE-Only > Modem Settings > RAT Selection > LTE only
Enjoy!
-Curt

T Mobile Setup/Down Speeds

So i took out the Sim from the Iphone 6 im returning and popped it into this bad boy. Curious as to how you guys are setting up the phone so you get the correct LTE speeds. Im barely getting 9down whereas my gf's galaxy in the same room is getting 20+ down. wonder if i did anything wrong

It depends on location. I've seen consistent 50+ down and 20+ up with T-Mobile and default APN.

dew.man said:
It depends on location. I've seen consistent 50+ down and 20+ up with T-Mobile and default APN.
Click to expand...
Click to collapse
Nah something is def wrong. Phone is barely usable without wifi. What APN settings are you guys using for tmo?

fast.t-mobile.com it should also give you the settings automatically if you just press the "Internet settings" button.

ikon8 said:
fast.t-mobile.com it should also give you the settings automatically if you just press the "Internet settings" button.
Click to expand...
Click to collapse
Thats what i been running. Could it have something to do with the sim? Was i supposed to get a sim for an unlocked phone? Urrgh so frustrating

That's pretty slow, your gf has the tmo also? Pop her sim in your phone and compare. The sim shouldn't matter though.

ikon8 said:
That's pretty slow, your gf has the tmo also? Pop her sim in your phone and compare. The sim shouldn't matter though.
Click to expand...
Click to collapse
shes got a galaxy s4 so that wont work. however i still got the iphone 6 around. when i put the sim in that phone i get regular LTE speeds.

Oh, I just noticed in your speedtest result you're on H, not LTE. Under "preferred network mode" do you have "4G (preferred)" enabled? If you're in a border coverage area it could be that your phone is dropping you down to HSPA+ instead of staying on LTE.
For a test, go to the dialer and do *#*#4636#*#* then go to Phone Info and change it to LTE Only and test it to see if it stays on LTE and what kind of speeds you get, by default it's set to "LTE/GSM auto PRL" so if the LTE connection isn't strong enough it's going to drop you down to H+.

ikon8 said:
Oh, I just noticed in your speedtest result you're on H, not LTE. Under "preferred network mode" do you have "4G (preferred)" enabled? If you're in a border coverage area it could be that your phone is dropping you down to HSPA+ instead of staying on LTE.
For a test, go to the dialer and do *#*#4636#*#* then go to Phone Info and change it to LTE Only and test it to see if it stays on LTE and what kind of speeds you get, by default it's set to "LTE/GSM auto PRL" so if the LTE connection isn't strong enough it's going to drop you down to H+.
Click to expand...
Click to collapse
These Are my options under preffered:
wcdma only, gsm only, wcdma (preffered)/gsm and 4g(preffered)/wcdma/gsm. i dont see lte in the list
per your test, when I switch to LTE only in phone options the I lose all bars and signal totally craps out.

So when you switched to LTE Only, after a second or 2 you didn't get a 4G symbol above the signal bar? Do you ever see 4G? Mine switches to 4G within about 1 second of switching to LTE Only.

ikon8 said:
So when you switched to LTE Only, after a second or 2 you didn't get a 4G symbol above the signal bar? Do you ever see 4G? Mine switches to 4G within about 1 second of switching to LTE Only.
Click to expand...
Click to collapse
negative. just all bars gone and a big red x. you have this phone on t mobile also? did you do the us firmware update?

Yea, I'm using tmo. My phone is running 23.0.A.2.105

I got 2.93 maybe which one is 105??

I was worried during my first day of owning the phone because my Z1c showed LTE above the bars and now this Z3c shows 4G. I was worried that 4G != LTE.