Develop Bugs

[Q] help!3G connectivity has gone from my phone

my phone can not connect to 3G networks in most of our city, while it used to work just fine in these same places. at first i thought there must be something wrong with the carrier's base stations. but today i tested my SIM card on another LU6200(Korean version of Nitro HD) and it works perfectly both on 3G and 2g networks on that phone. but when i put it back into my phone, it can only get 2G signal. if i set the Preferred Network Type to WCDMA ONLY, it got no signal with just a cross on the signal bar. i have to put it back into GSM ONLY mode to receive signal.if i go out, i can get partial 3G connectivity here and there, but not consistently. sometimes even if i have full 3G bar signals on the status bar, i can not make calls or connect to the internet.i've got this problem probably after i tried to forcibly go into the Phone Info menu.i got repetitive " the process com.android.phone has stopped unexpectedly" promps , and i just ignored it and tried again. now ,2 options are missing from the menu, LTE/WCDMA/GSM and LTE Global.in place of them, it's UNKNOWN. i already tried flashing KDZ package of no avail. Does this mean a hardware malfucntion or software glitch?Please help!Thank you in advance

No one can answer?

freefall12 said:
No one can answer?
Click to expand...
Click to collapse
Ask att store for a different sim card i had lte issues and new sim card helped try that
LG NITRO-N XDA APP

Well you do HAVE GSM only selected. THATS 2G(EDGE)
for 3G you would need to select WCDMA

hyelton said:
Well you do HAVE GSM only selected. THATS 2G(EDGE)
for 3G you would need to select WCDMA
Click to expand...
Click to collapse
^^^So true
LG NITRO-N XDA APP

no, if i select wcdma, i got no signal.it should be hardware problem

cann't switch to 3g

hi guys
am new at the xda but i learned alot here
my issue is
i have shv-250l it is korean note 2 and i'v red the closest model to it is n7105 so i posted here
i cann't switch to 3g connection (h, h+ ,3g ,umts) it auto connects by it's self
but the standered is it 2g all the time and it's slow
i know the 3g might be weak in my area but it still streams better (tested on my earlier s3)
here is a screen shot when i get into mobile data option that's all i see
and that's a screen shot of something called global roaming i don't know what is that?
and in this image above you can see a phone locked or something i marked it
i realy tornud google and searched alot but cann't find any thing
please help me
​

guys how do i enable band selection
like gsm or wcdma or lte?
please help​

So, you're saying thet you didn't found it under 'More Settings >> Mobile Network' options for changing type?

yeah i can't find it look at the 1st photo attached in my post
​

Pique91 said:
yeah i can't find it look at the 1st photo attached in my post
​
Click to expand...
Click to collapse
I mean under tab 'More Networks'?
Dial from dialpad *#*#4636#*#* >> Phone info >> Set network type under 'Set preferred type:'

the code didnot work for me :S the dailer isnot responding to it
and under more networks i get vpn and mobile networks which i screen shotted it
and the other is roaming related options
my mobile is shv-250l and am using official korea 4.3jb
maybe the little icon with a phone slashed is locking this option? idk​

Pique91 said:
the code didnot work for me :S the dailer isnot responding to it
and under more networks i get vpn and mobile networks which i screen shotted it
and the other is roaming related options
my mobile is shv-250l and am using official korea 4.3jb
maybe the little icon with a phone slashed is locking this option? idk​
Click to expand...
Click to collapse
Nope, that was just a roaming symbol. Try it by *#4636# or *#4636#*

sry the th\t code didn't work either
really appreciate u trying to help​

guys any idea\s to toggle 3g on all the time​

guys i solved it finnaly
i used xposed framework + intelli3g
thx to veagles
http://forum.xda-developers.com/nexus-4/themes-apps/app-intelli3g-2g-3g-4g-toggle-battery-t2580234​

[Q] Htc desire hd A1919 3G Problem

I am using HTC DESIRE HD A1919. (Baseband version 12.65.60.29U_26.14.04.28_M) and (Kernel version 2.6.35.10-g931a37e [email protected] #1 Wed Nov 9 14:04:03 CST 2011). Recently 3G is launched in my country Pakistan but when my phone is not connecting to 3G. settings/about phone/Network/Mobile Network type always shows EDGE! I inserted my sim in a friend's phone in the same area and 3G was working fine. I went to Htc Sales and Service Store but they simply said they can't help! I have never rooted rooted my phone and done nothing with my phone except downloading apps from Google play! Can anyone tell how to solve this problem??? Please tell the solution in steps because i am unaware of android development and stuff like that!

No Hard...
faseeh said:
I am using HTC DESIRE HD A1919. (Baseband version 12.65.60.29U_26.14.04.28_M) and (Kernel version 2.6.35.10-g931a37e [email protected] #1 Wed Nov 9 14:04:03 CST 2011). Recently 3G is launched in my country Pakistan but when my phone is not connecting to 3G. settings/about phone/Network/Mobile Network type always shows EDGE! I inserted my sim in a friend's phone in the same area and 3G was working fine. I went to Htc Sales and Service Store but they simply said they can't help! I have never rooted rooted my phone and done nothing with my phone except downloading apps from Google play! Can anyone tell how to solve this problem??? Please tell the solution in steps because i am unaware of android development and stuff like that!
Click to expand...
Click to collapse
Open Dialer n Type: *#*#4636#*#*
Testing window will open up, Click on Phone Information > scroll down > Preferred Network(WCDMA Preffered by defect) > Choose WCDMA Only.
That's it.

htc desire hd 3g problem
dr.patron99 said:
Open Dialer n Type: *#*#4636#*#*
Testing window will open up, Click on Phone Information > scroll down > Preferred Network(WCDMA Preffered by defect) > Choose WCDMA Only.
That's it.
Click to expand...
Click to collapse
i don it but my phone go again in pereferd WCDMA what would i do pls

rohan khan said:
i don it but my phone go again in pereferd WCDMA what would i do pls
Click to expand...
Click to collapse
Did you get 3G while choosing WCDMA Only?
If Yes,means you have to do it manually everytime you reboot your device.
If No,means you don't have a 3G data plan.
If you reboot your device mean while it will again set to prefered WCDMA so everytime you need to do it manually. Just to remember if you're getting 3G even on prefered WCDMA then leave it as it is. I think it's an issue regarding weak carrier signal.

dr.patron99 said:
Did you get 3G while choosing WCDMA Only?
If Yes,means you have to do it manually everytime you reboot your device.
If No,means you don't have a 3G data plan.
If you reboot your device mean while it will again set to prefered WCDMA so everytime you need to do it manually. Just to remember if you're getting 3G even on prefered WCDMA then leave it as it is. I think it's an issue regarding weak carrier signal.
Click to expand...
Click to collapse
no i did'nt get 3g after WCDMA preferd but when i replace my sim to other set its working its so confusing

rohan khan said:
no i did'nt get 3g after WCDMA preferd but when i replace my sim to other set its working its so confusing
Click to expand...
Click to collapse
mine situation is exactly the same situation which is yours!

dr.patron99 said:
Did you get 3G while choosing WCDMA Only?
If Yes,means you have to do it manually everytime you reboot your device.
If No,means you don't have a 3G data plan.
If you reboot your device mean while it will again set to prefered WCDMA so everytime you need to do it manually. Just to remember if you're getting 3G even on prefered WCDMA then leave it as it is. I think it's an issue regarding weak carrier signal.
Click to expand...
Click to collapse
I have tried everything like this....but still no results! I guess this is a problem of build.prop! can anyone help in this regard?

faseeh said:
I have tried everything like this....but still no results! I guess this is a problem of build.prop! can anyone help in this regard?
Click to expand...
Click to collapse
Its not the build prop. Its how HTC designed the DHD.
The DHD isnt quadband, You can check the specs at gsm arena.
Some countries have thier 3g on a different band, so if you buy a DHD that doesnt scan for 3g on your countries band, you face the same problem.
I have being trying to fix this problem but got stuck along the way. Its very good to see that people also have the same problem. Maybe the devs would try something.

mickeyasamoah said:
Its not the build prop. Its how HTC designed the DHD.
The DHD isnt quadband, You can check the specs at gsm arena.
Some countries have thier 3g on a different band, so if you buy a DHD that doesnt scan for 3g on your countries band, you face the same problem.
I have being trying to fix this problem but got stuck along the way. Its very good to see that people also have the same problem. Maybe the devs would try something.
Click to expand...
Click to collapse
dear, did you get any sulution for 3g network on dhd?

rohan khan said:
dear, did you get any sulution for 3g network on dhd?
Click to expand...
Click to collapse
Nope..
Before i can try anything i have to put the device in diag mode which i have being able to, but the problem now is the device isnt showing up properly in QPST(a program for communicating directly to the qualcomm chip).
It detects the open port on windows but its unable to find the phone in the port.
If the phone doesnt show up in the port, changes cannot be done.
So thats the update.
If you have any idea, you could share

WCDMA
goto mobile network under settings, then select network mode, change it to GSM/WCDMA auto if it doesnt work then change it to WCDMA only.
It'll do the trick.

Disable 2G (LTE/UMTS only) solution

Sometimes the phone jump to 2G (EDGE) for no reason while HSPA and LTE work perfectly.
Here is the solution (and it will stay after power cycle):
Dial *#*#4636#*#*
Phone Information
Scroll down to network mode and choose "LTE/WCDMA"
Reboot the phone immediately.
This method works for me.

Almost, its *#*#4636#*#*

Trying to do this on my D855 international G3, on lollipop, but can't get into the phone information .
*#*#4636#*#* works, but when I click on Phone Information, an error is given 'note this application does not work on this device' . I suspect a changed lollipop radio/Rom thing.
Any idea on how to achieve this another way?

jimbobmcginty said:
Trying to do this on my D855 international G3, on lollipop, but can't get into the phone information .
*#*#4636#*#* works, but when I click on Phone Information, an error is given 'note this application does not work on this device' . I suspect a changed lollipop radio/Rom thing.
Any idea on how to achieve this another way?
Click to expand...
Click to collapse
Did you manage to fix it?

is there a solution for this on asop (euphoria 7/06)?.... after a call it goes to 2g and it "never" switches back to lte

New method:
Dial 277634#*# and you can get in Hidden Menu -> RAT Selection.

Typing 3856#*855# into the dialer allowed be in, then choose LTE, then RAT options.

Using the G3 D850 (AT&T) for t-mobile but it rarely conects to 4G LTE, it's usually on 2G, tried doing the above, with the *#*#4636#*#* code came up a error that I can't access that app, and in the hidden menu I couldnt find where/how to set WCDMA or LTE only, any new way to do this?

Qwerty when in hidden menu choose LTE-ONLY > then >modem setting> then > rat selection works on my g3

mate 20x Cannot connect to LTE network

I just bought mate 20x Global version EVR-L29
my problem is I am unable to connect to my 4g network
I tried to install apps like settings database editor to force 4G/LTE only for Huawei
but every time I pick LTE only or GSM/WCDMA/LTE or any type of settings my connection to my mobile network stop working
I lose mobile network connection and I am unable to do basic phone calls
The only way for me to make phone calls is when I pick up GSM ONLY
Any suggestions on what is wrong with my phone or what I should do?
I live now in Egypt using Vodafone network . The phone was bought from the USA.
thank you in advance for your help

Have you gone into your network settings and manually changed your apn settings to work with Vodafone? Google search Vodafone Egypt 4G apn settings or call Vodafone to get them. See if what you already have on your phone is the same.

scienceguylabs said:
Have you gone into your network settings and manually changed your apn settings to work with Vodafone? Google search Vodafone Egypt 4G apn settings or call Vodafone to get them. See if what you already have on your phone is the same.
Click to expand...
Click to collapse
I did the following so far and with no sucess
1-factory reset
2-tried 3 different sim cards with 3 different networks each one with the right APN settings sent to me from network operator.So i have no problem with sim cards for sure.
3-installed an app called settong database editor and changed hardware network preference to "11" an advice given on youtube to enable me to force phone to operate on LTE only
NONE OF THE ABOVE RESOLVED MY PROBLEM
I Still lose connection with network and unable to do phone calls once i pick any settings but "GSM only " for data connection.
I do not know what to do.

What version Android do you have? If it's 10 then you need to install the APN manually.
Sent from my EVR-L29 using Tapatalk

puzzledguy said:
I did the following so far and with no sucess
1-factory reset
2-tried 3 different sim cards with 3 different networks each one with the right APN settings sent to me from network operator.So i have no problem with sim cards for sure.
3-installed an app called settong database editor and changed hardware network preference to "11" an advice given on youtube to enable me to force phone to operate on LTE only
NONE OF THE ABOVE RESOLVED MY PROBLEM
I Still lose connection with network and unable to do phone calls once i pick any settings but "GSM only " for data connection.
I do not know what to do.
Click to expand...
Click to collapse
You living in bad area where 4g is cancelled by something