Develop Bugs

[Q] 3g and h switch rapidly

These icon swap back and forth alot. Im on at&t and i dont believe i live in an area with enhanced backhaul what does this mean? Also i have trouble with my MMS. They take a very long time to send and sometimes dont send at all. Could this be why?

I dont know if it is related but try either GSM or WCDMA rather than both under settings - mobile
And may I ask...why are you still using MMS in times of WhattsApp?
Sent from my HTC One X using xda premium

I literally know nobody that uses android. and im running cm9 how to do that?

Sounds like Fast Dormancy is enabled on the phone, maybe your network doesn't support it, which means that your phone is taking a long time to renegotiate HSDPA connections...

How would I turn that off in cm9?
Sent from my HTC One X using xda premium

lmftmf said:
How would I turn that off in cm9?
Sent from my HTC One X using xda premium
Click to expand...
Click to collapse
Unsure, I believe this is set by the RIL or Radio, stock ROMs likely do the same but hide the fact that it is switching by having both 3G and H icons be the 4G icon.

its something like *#9900* you can look it up online though to make sure. At least it was the way to do it when I had a Samsung
you would type that in dialer and it would bring up a menu
Or you could flash a ROM like leedroid which should have fast dormancy disabled by default since it asks if you want to enable in the AROMA installer.
Mine switches between H and 3G every once in a while. Not really frequently though.

pewpewbangbang said:
its something like *#9900* you can look it up online though to make sure. At least it was the way to do it when I had a Samsung
you would type that in dialer and it would bring up a menu
Or you could flash a ROM like leedroid which should have fast dormancy disabled by default since it asks if you want to enable in the AROMA installer.
Mine switches between H and 3G every once in a while. Not really frequently though.
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Click to collapse
It says connection problem or invalid mmi code im using at&t. On the cm9 rom from modaco.
Edit: I just added the the fast dormancy ril thingy to the build.prop.
Edit 2 Didnt fix it.

lmftmf said:
It says connection problem or invalid mmi code im using at&t. On the cm9 rom from modaco.
Edit: I just added the the fast dormancy ril thingy to the build.prop.
Edit 2 Didnt fix it.
Click to expand...
Click to collapse
might be your data plan or APN
use the Phone apn
go create a new apn in settings and put in this
Name: phone
APN: phone
leave the rest blank. How frequently is it changing from 3G to H? I don't think anything can really be done about it and it's natural. So long as it doesn't interfere with anything.
Mine switches but not frequently, every once in a while

pewpewbangbang said:
might be your data plan or APN
use the Phone apn
go create a new apn in settings and put in this
Name: phone
APN: phone
leave the rest blank. How frequently is it changing from 3G to H? I don't think anything can really be done about it and it's natural. So long as it doesn't interfere with anything.
Mine switches but not frequently, every once in a while
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Click to collapse
That doesnt allow any connectivity whatsoever maybe its because im using cm9 you think?
Edit: I see on my account im using the 2gb for smartphone plan is that the correct one?
Edit2: Called in and they switched to the 4g one and it works good.

(NQ)Can't Get LTE on AOKP rom on Rogers 1747M

Hey All,
So, for some reason, I am unable to get LTE when i am flashed on the AOKP jellybean rom for the SGH-1747M (rogers)
I did everything that was stated in Task's Gerrit (Changed the connection for WCDMA to LTE/GSM auto), all that does is work for a while on H+, then disconnects.
I've changed my apn settings to the Rogers LTE settings, which just cuts off communication all together
Ive flashed Rogers Modems, still to no avail.
The thing that bothers me is that other sgh-1747M users claim to have been getting LTE on the AOKP jellybean rom.
My question is WHY AM I HAVING TROUBLE!!!??? I know the Rom was made for an At&T sgh1747, so people may say thats why its not working, but people with Canadian SG3's have been able to get LTE on the same ROM im having trouble getting it on.
If theres anything at all im missing, can someone please clarify exactly what im missing and what I should do to get it working.
I love the AOKP jellybean ROM, i keep going back to it, but the LTE not working just hurts my feelings (since I am paying for an LTE smartphone plan). PLEASE SOMEONE HELP!!!
PS: the first time I ever changed from WCDMA to LTE/GSM autom i got a 4G symbol for about 30 secs.....never seen it again! HELP!

i dont have a gerrit. so im unsure what you are talking about.
you need to add a canadian LTE apn and then do this...
Enter *#*#4636#*#* into the dialer
phone information
set preferred network type
change to LTE/GSM auto

task650 said:
i dont have a gerrit. so im unsure what you are talking about.
you need to add a canadian LTE apn and then do this...
Enter *#*#4636#*#* into the dialer
phone information
set preferred network type
change to LTE/GSM auto
Click to expand...
Click to collapse
sorry not gerrit. you stated the info above in one of your earlier updates, which I did. Didnt seem to work for me though. Are there any suggestions as to how I can possibly fix the problem?

KCtheGREAT said:
sorry not gerrit. you stated the info above in one of your earlier updates, which I did. Didnt seem to work for me though. Are there any suggestions as to how I can possibly fix the problem?
Click to expand...
Click to collapse
I'm not really sure. Being as I don't have a Canadian model its not something I can test. But I'm sure some Canadian users will be posting here to help you out soon.

when i try to change the preferred network it will not let me change it to anything else but to lte/gsm (prl) (i have the AT&T version)

task650 said:
I'm not really sure. Being as I don't have a Canadian model its not something I can test. But I'm sure some Canadian users will be posting here to help you out soon.
Click to expand...
Click to collapse
Yea, I know, thats what Im aiming for. I wouldnt ask you directly since I know its not something you directly deal with, but thanks alot for being the first to reply!
And keep up the great work Task!

dirtbikerr450 said:
when i try to change the preferred network it will not let me change it to anything else but to lte/gsm (prl) (i have the AT&T version)
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Click to collapse
Thats interesting. Maybe its because you are actually using at&t network. It works when I put it on LTE/GSM, but all I get is 3G and H+

Check your IMEI in about phone/status. If its showing 0, there's a thread for that.
If you're getting 4G icon and your mobile network status says LTE and are getting LTE speeds, then its cosmetic issue. I had that problem before.
What I did was I flashed Kyan's ROM 1.3 cause its based off of Rogers firmware. Once I verified I had LTE icon on Kyan ROM, then flashed the stock/rooted ROM after.
Sent from my SGH-I747M using xda app-developers app

cue_32 said:
Check your IMEI in about phone/status. If its showing 0, there's a thread for that.
If you're getting 4G icon and your mobile network status says LTE and are getting LTE speeds, then its cosmetic issue. I had that problem before.
What I did was I flashed Kyan's ROM 1.3 cause its based off of Rogers firmware. Once I verified I had LTE icon on Kyan ROM, then flashed the stock/rooted ROM after.
Sent from my SGH-I747M using xda app-developers app
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Click to collapse
Interesting. I will try that method and see what happens. Thanks for the info; will post back with results soon

Ok, so after going through the whole process stated above, i WAS able to get a 4G symbol come every now and then. But before the connection actually finalizes and goes through (before it turns blue on the aokp rom), it disconnects and goes back to WCDMA preferred. I added the rogers LTE apn, and using that apn with the LTE/GSM auto selected allowed the 4G to come, but it keeps disconnecting. It even sometimes changes back to other apns on the list by itself
Anyone know if theres a way to lock the preferred network and apn settings?

enter apn settings, then REBOOT phone. After that, enter *#*#4636#*#* into phone dialer and go change to LTE/CMDA/GSM. that worked for me, I just needed to reboot my phone for the apn settings to work

JayDieu said:
enter apn settings, then REBOOT phone. After that, enter *#*#4636#*#* into phone dialer and go change to LTE/CMDA/GSM. that worked for me, I just needed to reboot my phone for the apn settings to work
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Click to collapse
didnt work for me, unfortunately. im just cursed

KCtheGREAT said:
didnt work for me, unfortunately. im just cursed
Click to expand...
Click to collapse
I stumbled upon this thread and the above solution using the dialer code. Worked instantly, no reboot required. I'm running R4INS AOKP Jelly Bean port on a Rogers SGH-I727.

veebomb said:
I stumbled upon this thread and the above solution using the dialer code. Worked instantly, no reboot required. I'm running R4INS AOKP Jelly Bean port on a Rogers SGH-I727.
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Click to collapse
Mine works until I reboot. Then it changes back to WCDMA. I'm on Telus.

LTE on canadian i747M (Rogers)
I had similar issue with LTE after flashing to AOKP rom. The fix provided by AOKP (after every reboot, type in *#*#4636#*#* and flipping the network type from WCDMA to LTE_only, then flip to LTE/GSM auto(PRL) ) works. LTE will show up as 4G. I have the 2012-09-30 AOKP build installed.
Yesterday all of a sudden I could not get LTE anymore. Not sure what happened as the only thing I did was to activate a new account on Google. Anyway the 4G/ flipping did not work anymore. Reflashed the rom several times, still the same issue, my phone will not get LTE/4G.
This morning tried the following and voila it worked, thought I will share this:
Flip the network type to LTE Only, there is no connection, REBOOT the phone.
1. After reboot, flip the network type to LTE Only again, this time, the connection worked - what a surprise/thrill.
2. Flipped the network type to LTE/GSM auto (PRL), connection was ok and 4G came on and stayed on. Did several reboots and repeated 1 and 2 and LTE/4G was ok.
Hope this helps.

I don't recommend you to use task aokp rom! You won't get LTE real speed and Dev won't help you since you are not an at&t user! He couldn't care less about the rest so try liquid jelly bean which is a lot faster and better or milestone 4 and aristodemo! They have better support although they are tw rom but worthy anyways
Rogers I747M
Sent from my SGH-I747 using xda premium

Task compiles that ROM based on AOKP source, but AOKP officially doesn't support att. Although I didn't have problems getting lte on his ROM the fact that you have to set it every time you reboot is why I am using cm10 for now otherwise it's a good ROM!

I'm having the same issues on my rogers branded s3. No matter what I do I can get lte to even appear. My apn auto rolls back to the provided apn and if I delete that I have no data at all. Hopefully this does have an answer because the Rom is amazing
Sent from my SGH-I747M using Tapatalk 2

Alright I think I have it figured out. I added the rogers APN related all others and the only change I made was I removed the info under APN type where it said internet+MMS and left it blank. Saved the APN rebooted and I have lte now. I even rebooted my phone and each time it boots up its showing 4g without having to play with any settings
Sent from my SGH-I747 using Tapatalk 2

How to lock to 3G network? Solution / app?

In Viper ROMs notification bar there was a switch for 2G/3G/2G+3G.
I really miss this option in other ROMs, where only 2G/2G+3G is available. In auto mode (2G+3G) my phone often has trouble choosing network which makes the connection very unstable.
Do you have any tips for an app or widget that will let me lock to 3G only?
Thanks.

Try going to Settings - Mobile Networks - change Network Mode to WCDMA only.
Coming from a Sense 3.6 ROM here. Might be different from ROM to ROM.
Sent from my HTC Desire S using xda app-developers app

Sorry forgot to mention, I use AOKP, where there is no such option in the Settings menu. But I recall your solution works in original and Sense ROMs.

type in wcdma into Google play and it should show an app called network, it simply accesses the network settings inside the os and allows you to change to wcdma only (3G). this does need set after every boot though.

kevrae said:
type in wcdma into Google play and it should show an app called network, it simply accesses the network settings inside the os and allows you to change to wcdma only (3G). this does need set after every boot though.
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Click to collapse
Great, exactly what I was looking for! Thanks a lot.

[Q] LTE is gone, help wanted!

Hi, Im using a model i317M, I modified it to work with AWS network, and the 4G icon on the task bar still showed up. Then I rooted the phone, and installed an international ROM (which is tested and can be installed for all models), to have a multiscreen function. After that, I can only connect to 3G network, the 4G icon is gone, and never showed up. I'm wondering what happened to it, and my network mode is still the same in the setting, which is "LTE/GSM/WCDMA(Auto Mode). If I installed the stock ROM will it come back? And can I do anything to get the 4G icon back without install any ROM? Thanks to you all! Really appreciated that in advance!

Some roms just don't have the 4G icon even when you're getting 4g.
Sent from my SAMSUNG-SGH-I317 using Tapatalk 2

james3mihwa said:
Hi, Im using a model i317M, I modified it to work with AWS network, and the 4G icon on the task bar still showed up. Then I rooted the phone, and installed an international ROM (which is tested and can be installed for all models), to have a multiscreen function. After that, I can only connect to 3G network, the 4G icon is gone, and never showed up. I'm wondering what happened to it, and my network mode is still the same in the setting, which is "LTE/GSM/WCDMA(Auto Mode). If I installed the stock ROM will it come back? And can I do anything to get the 4G icon back without install any ROM? Thanks to you all! Really appreciated that in advance!
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Click to collapse
Well if you didnt set up your APN just running on the one from the international rom then there ya go you need to enter the correct APN to get LTE>..

LittleRedDot said:
Some roms just don't have the 4G icon even when you're getting 4g.
Sent from my SAMSUNG-SGH-I317 using Tapatalk 2
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Click to collapse
thanks man, i installed another rom which really don't support 4G icon.

hyelton said:
Well if you didnt set up your APN just running on the one from the international rom then there ya go you need to enter the correct APN to get LTE>..
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Click to collapse
haha too complicated, im still a noobie, so I installed back my i317M stock rom, thanks anyways.

james3mihwa said:
haha too complicated, im still a noobie, so I installed back my i317M stock rom, thanks anyways.
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Click to collapse
If you are using International ROMs on your 317m, make sure they are based on 7105 and not 7100. The 7100 doesn't support LTE.

no LTE on at&t - unlocked m919

I've seen several discussions about this but didn't seem to find a working solution. I'm currently using GNF1 V3 NB4, I tried using the apn settings for at&t and also called them to make sure they have the correct imei number. Also, for some reason under the "Network mode" I don't have an LTE option, I only have WCDMA/GSM, GSM ONLY AND WCDMA ONLY. I am able to get 4G but no LTE. Is there any solution or any other way to solve this problem?

nir360 said:
I've seen several discussions about this but didn't seem to find a working solution. I'm currently using GNF1 V3 NB4, I tried using the apn settings for at&t and also called them to make sure they have the correct imei number. Also, for some reason under the "Network mode" I don't have an LTE option, I only have WCDMA/GSM, GSM ONLY AND WCDMA ONLY. I am able to get 4G but no LTE. Is there any solution or any other way to solve this problem?
Click to expand...
Click to collapse
Change ro.product.name= in the build.prop to say jfltetmo

will it also change the speed or just add an "LTE" symbol?

Give you the LTE option in network modes and change the icon. Speeds? Probably since youll have LTE back

ShinySide said:
Give you the LTE option in network modes and change the icon. Speeds? Probably since youll have LTE back
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Click to collapse
ok, i have the LTE option in "network modes" now, however the speed is more or less the same and I don't have LTE bar, not sure whether it's because of my current location or what.. is there anything else I could edit to try to make it work?

If I change the ro.product.model , name and device to at&t values would I get the LTE speeds just like an at&t s4?

nir360 said:
ok, i have the LTE option in "network modes" now, however the speed is more or less the same and I don't have LTE bar, not sure whether it's because of my current location or what.. is there anything else I could edit to try to make it work?
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When I bought this phone from T-Mobile I was still on an AT&T plan. Before I jumped ship over to Net10 Wireless I used AT&T's LTE all over Pensacola. That was on a sim-unlocked, unrooted, otherwise 100% stock M919. Did you double-check your APN's? Perhaps you're just not in an area where you can pick up LTE?

Yes I use the correct apns the ones that at&t gave me, but im gonna try to go back to stock then change the apns to at&t and maybe that will work.. but even if it will, I don't know if I could keep using GNF1 or would I have to use a different rom, anybody else have or had issues with getting LTE on at&t while using custom roms and knows roms that work? (Preferably tw)

See your network type in settings > about phone > status. Try to get LTE with your AT&T SIM on another phone then install it back to your M919.
Sent from my Samsung M919 using XDA developers app