Database Users

I9505 or most international roms losing signal ?

Hello all I have had this phone since launch date and love it.However when flashing international roms like i9505 or tmobile roms etc... there roms seem to loose signal in and out every so often like maybe once every 15 mins or so.. it only happens to international roms.I am on the latest base running Battery king @ the moment BGA base flashing different kernels made no difference in fixing this issue.Wondering if you guys have any input on this problem ? APN is on ATT LTE

What baseband are you on at the moment?

I have found my dl speeds are 25-40% lower on i9505 roms than US ones. But, they are still very high so not an issue for me. ATT/PTA. LTE didn't get me anything.

tokoam said:
Hello all I have had this phone since launch date and love it.However when flashing international roms like i9505 or tmobile roms etc... there roms seem to loose signal in and out every so often like maybe once every 15 mins or so.. it only happens to international roms.I am on the latest base running Battery king @ the moment BGA base flashing different kernels made no difference in fixing this issue.Wondering if you guys have any input on this problem ? APN is on ATT LTE
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Click to collapse
Yes I have noticed that with the GE 4.2.2 ROM and the GE 4.3 leak that is out.
My phone sometimes would randomly just lose signal and then come back in maybe 30 seconds. Also I would get a new voice mail and the phone didn't even ring.
So I didn't lose signal as much as you are saying, I just lost it every once in awhile, but I still can relate to your problem.
Currently this afternoon I am working on putting on my phone the latest MF3, pre-rooted and I debloated by myself, so as I don't lock myself out of flashing in the future. I'm just putting in the finishing touches and flashing the MF3 baseband as well.
My take on all this, is the GE ROM is great and has none of the crap that the carrier ROMs have, but the problem is I think that the GE roms aren't optimized for specific carriers, that may be where the performance issues are. Plus I think Samsung is more capable of optimized the OS for their own phone's hardware than Google is.

Pfft that's an at&t thing I flash all roms that are compatible and I never lose any kind of signal and my dl speeds are the same too. Poor guys on at&t keep getting that pole rammed up a little bit further!!!

TheAxman said:
What baseband are you on at the moment?
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AMDL

tokoam said:
AMDL
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Did you try ATT/PTA not LTE

rugmankc said:
Did you try ATT/PTA not LTE
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No I have not but I suppose it's worth a shot.

tokoam said:
No I have not but I suppose it's worth a shot.
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OK, when I changed to LTE I had no data. Now maybe I could have re-registered on network or rebooted. But, didn't get that far. Just went back to PTA and got LTE back--don't know why

Cell signal terrible/inconsistent

My signal is terrible on 4g/3g/1x. My phone went from 4g to 3g to 1x. Then on 1x, it lost the connection and got it again. Even when I have a 3g connection and I try to call someone, it connects and says call lost in 5-10 seconds, or doesn't connect at all. I'm not expert on how cell phone radios work and how signal works, but could someone help me on improving my signal? Do I need to flash a new radio(s) to improve my signal? If so, where would I find it?
edit: I think i mean modem

gundam802 said:
My signal is terrible on 4g/3g/1x. My phone went from 4g to 3g to 1x. Then on 1x, it lost the connection and got it again. Even when I have a 3g connection and I try to call someone, it connects and says call lost in 5-10 seconds, or doesn't connect at all. I'm not expert on how cell phone radios work and how signal works, but could someone help me on improving my signal? Do I need to flash a new radio(s) to improve my signal? If so, where would I find it?
edit: I think i mean modem
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Click to collapse
1. What modem are you on right now?
2. Is Sprint doing upgrades in your area (call and see to find out)?
3. Maybe it's just Sprint's sh*tty service -__-

Joe0113 said:
1. What modem are you on right now?
2. Is Sprint doing upgrades in your area (call and see to find out)?
3. Maybe it's just Sprint's sh*tty service -__-
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Click to collapse
1. My baseband version is L720VPUAMF9, if that's what you're asking.
2. Will do
3. Maybe, but my dad has an iPhone 5 on Sprint and he seems to be getting more consistent coverage than I am.

gundam802 said:
1. My baseband version is L720VPUAMF9, if that's what you're asking.
2. Will do
3. Maybe, but my dad has an iPhone 5 on Sprint and he seems to be getting more consistent coverage than I am.
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Click to collapse
Put your phone and your dad's phone in the same spot and check the signals (remember to check dBm and not the signal bars). Also make a call to Sprint like I said. If something is wrong, try switching modems (try out MDL) and then see. If anything else, get a replacement!

Joe0113 said:
Put your phone and your dad's phone in the same spot and check the signals (remember to check dBm and not the signal bars). Also make a call to Sprint like I said. If something is wrong, try switching modems (try out MDL) and then see. If anything else, get a replacement!
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How do I switch modems? I'm on a 4.3 AOSP ROM at the moment.

gundam802 said:
How do I switch modems? I'm on a 4.3 AOSP ROM at the moment.
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Ohhh you neglected you were on an AOSP ROM lol... that's probably the root of your signal problems right there brotha as AOSP ROMs are known to be less stable and have a weaker signal than TW ROMs. But all you gotta do is find the modems thread, download, and flash. I forget if they are flashable zips in recovery, or if they have to be flashed via Odin.
What I recommend is... go outside (NO WiFi!!) and do a speed-test on your current setup. Then flash a TW ROM and go to the same spot and do another speed-test. Also try and doing the same things with different modems as well and see which is the best combo for you!

Joe0113 said:
Ohhh you neglected you were on an AOSP ROM lol... that's probably the root of your signal problems right there brotha as AOSP ROMs are known to be less stable and have a weaker signal than TW ROMs. But all you gotta do is find the modems thread, download, and flash. I forget if they are flashable zips in recovery, or if they have to be flashed via Odin.
What I recommend is... go outside (NO WiFi!!) and do a speed-test on your current setup. Then flash a TW ROM and go to the same spot and do another speed-test. Also try and doing the same things with different modems as well and see which is the best combo for you!
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I will do the speed test. I can't find the modems thread, could you please link me? Thanks for all the help!

gundam802 said:
I will do the speed test. I can't find the modems thread, could you please link me? Thanks for all the help!
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Click to collapse
Just search modems man.

Modem trouble

Hi xda community
I have some strange problems with my Note 3 N9005. I will try to explain it as good as I can...
I was on Omega Rom v19 and 4g and everything was good...
So I wanted to upgrade to the new v20 based on Sammy tw XXUFNF4...
I thought I would like to try the new modem as well, so I flashed stock Sammy rom XXUFNF4 via Odin before I flashed v20 of Omega on top of it.
Flash went well, both of stock Sammy and Omega rom...
But before I used to have 4g coverage in my house, now I have NADA. Well, that's not the problem here...
I have tried flashing other modems and some of them work, but still no 4g coverage in my house. The ones which doens't work gives me "unknown baseband and unknown imei" - I can fix that by flashing a modem which I know works for me.
I have tried many things now and I still get no 4g in my house.
I have wiped and flashed stock Sammy firmwares and even there it gives me the error "unknown imei and unknown baseband"
I am getting frustrated here and I just want to kill my Note 3 with a hammer.
Anyone outthere who can help me? I can write via hangouts and skype if so...
If there's any questions, please let me know...
/CK

Just to check, does 4G work somewhere else? Because I had a similar problem once, and it turned out the tower had suffered a lightning strike...
Sent from my SM-N9005 using Tapatalk 2

ShadowLea said:
Just to check, does 4G work somewhere else? Because I had a similar problem once, and it turned out the tower had suffered a lightning strike...
Sent from my SM-N9005 using Tapatalk 2
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You're smart... We had a thunderstorm recently and I do have 4g outside my house. But as I remember it the problems started right after I flashed v20 of Omega Rom...
/CK

Café King said:
You're smart... We had a thunderstorm recently and I do have 4g outside my house. But as I remember it the problems started right after I flashed v20 of Omega Rom...
/CK
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Click to collapse
At least we know the modem does allow 4G. It's not broken
So that leaves either a low voltage to the modem, or a very unlucky timing in regards to the tower. It is possible the lower-frequency band on the 4G transmitter is disabled (and high ones above 1800 can't penetrate indoors) or the transmitter's aim has been repositioned. Or the modem isn't getting enough juice.
Check with your carrier if there's an issue with the tower, or if they did any maintenance on it. (They repositioned the aim for the transmitter here after the lightning strike, and now I can't even get the GSM network in my house. I have to hang out the window to make a call...)
If that's not it, try increasing the voltage to the modem.
Sent from my SM-N9005 using Tapatalk 2

ShadowLea said:
At least we know the modem does allow 4G. It's not broken
So that leaves either a low voltage to the modem, or a very unlucky timing in regards to the tower. It is possible the lower-frequency band on the 4G transmitter is disabled (and high ones above 1800 can't penetrate indoors) or the transmitter's aim has been repositioned. Or the modem isn't getting enough juice.
Check with your carrier if there's an issue with the tower, or if they did any maintenance on it.
If that's not it, try increase the voltage to the modem.
Sent from my SM-N9005 using Tapatalk 2
Click to expand...
Click to collapse
How to increase the voltage to the modem?
Hell you are smart!!!
I will call my carier first thing in the morning!
/CK

Café King said:
How to increase the voltage to the modem?
Hell you are smart!!!
I will call my carier first thing in the morning!
/CK
Click to expand...
Click to collapse
I believe Synapse provides an interface for the voltage controls, but I can not guarantee if it's supported. And I can't promise that it's safe, either.
But I do suspect it's a carrier problem. Is the 4G everywhere else as strong as it was before things went haywire? If yes, it's not the voltage. (if it was, the signal would be worse everywhere, and not just in one place. )
Sent from my SM-N9005 using Tapatalk 2

ShadowLea said:
I believe Synapse provides an interface for the voltage controls, but I can not guarantee if it's supported. And I can't promise that it's safe, either.
But I do suspect it's a carrier problem. Is the 4G everywhere else as strong as it was before things went haywire? If yes, it's not the voltage. (if it was, the signal would be worse everywhere, and not just in one place. )
Sent from my SM-N9005 using Tapatalk 2
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Click to collapse
I believe the signal was the same the other places I checked it... I really do hope it's just a carrier problem
Now I just need to find out my other problem
/CK

Café King said:
I believe the signal was the same the other places I checked it... I really do hope it's just a carrier problem
Now I just need to find out my other problem
/CK
Click to expand...
Click to collapse
Certainly sounds like it is.
What's the other problem? (if I completely read past it, my mistake, it's been a long day.)
Sent from my SM-N9005 using Tapatalk 2

ShadowLea said:
Certainly sounds like it is.
What's the other problem? (if I completely read past it, my mistake, it's been a long day.)
Sent from my SM-N9005 using Tapatalk 2
Click to expand...
Click to collapse
If I flash a modem, some works, some dont. The ones which isnt working gives me unknown baseband and unknown imei, but that can be fixed by flashing a working modem.
It's the same when I flash stock firmwares. Some modem works, some dont. Just like above... Make any sense?
/CK

Café King said:
If I flash a modem, some works, some dont. The ones which isnt working gives me unknown baseband and unknown imei, but that can be fixed by flashing a working modem.
It's the same when I flash stock firmwares. Some modem works, some dont. Just like above... Make any sense?
/CK
Click to expand...
Click to collapse
Hmmmm, either something goes wrong during the process, or there's an incompatibility somewhere.
Sent from my SM-N9005 using Tapatalk 2

Café King said:
Hi xda community
I have some strange problems with my Note 3 N9005. I will try to explain it as good as I can...
I was on Omega Rom v19 and 4g and everything was good...
So I wanted to upgrade to the new v20 based on Sammy tw XXUFNF4...
I thought I would like to try the new modem as well, so I flashed stock Sammy rom XXUFNF4 via Odin before I flashed v20 of Omega on top of it.
Flash went well, both of stock Sammy and Omega rom...
But before I used to have 4g coverage in my house, now I have NADA. Well, that's not the problem here...
I have tried flashing other modems and some of them work, but still no 4g coverage in my house. The ones which doens't work gives me "unknown baseband and unknown imei" - I can fix that by flashing a modem which I know works for me.
I have tried many things now and I still get no 4g in my house.
I have wiped and flashed stock Sammy firmwares and even there it gives me the error "unknown imei and unknown baseband"
I am getting frustrated here and I just want to kill my Note 3 with a hammer.
Anyone outthere who can help me? I can write via hangouts and skype if so...
If there's any questions, please let me know...
/CK
Click to expand...
Click to collapse
As a general model-related piece of information for Note 3 - I believe modems and the bootloader itself can not be (successfully) written from outside "trusted/secure zones" - in other words you need stock recovery at least for that to work. In download mode it should also work but again there are extra security checks there on the signature.

Update:
Talked to the operator today. There were no errors or recent work on their towers near me...
/CK

That's what we always say, too, when a customer asks. It's generally a lie. Particularly when the maintenance was supposes to improve things.
Did you install anything in your house that might cause interference? Router, microwave, something that covers the wall closest to the tower, a wallpaper with metallic components? New isolation? Or possibly neighboirs closer to the tower that did? (In my neighbourhood, when my neighbours between me and the tower open their windows, I get 3G. When they close it, nought. Oh the joys of reinforced concrete... )
Sent from my SM-N9005 using Tapatalk 2

poor signal

devs please correct poor signal problem it is so bad to have perfect roms but cant use them
i have not try new AOSPA v2 yet but AICP have the problem with new update

sokolataki said:
devs please correct poor signal problem it is so bad to have perfect roms but cant use them
i have not try new AOSPA v2 yet but AICP have the problem with new update
Click to expand...
Click to collapse
There is almost nothing the devs can do, because for the big majority, including the devs themeselves and me, there is no such problem.
You claimed that issue over 20 times ? now in a lot of threads and to be honest, its annoying. You know the work of our devs (hehehe)
already. They are really good. If there is a problem, they try to solve it, if possible!
I understand, that you have a problem and need help.
But ask yourself, if everthing on your side is ok. Its interesting, that the second S3 you worked on has the same prob. You already made
a clean install on both? You flashed several modems, instead of the warning from superdragonpt, that it can damage the hardware, on
both of the S3?

No my phones is OK .maybe you don't read carefull my post. If it was hardware damage I will have the problem with lp roms too but that not happen.
I try new aospa v2 fire855 manage to solve that problem to me. He fixed connection selection and both poor signal. I hope to fix aicp cm13 too.thanks @fire855

news about poor signal
today i buy a new sim with 4g support
2g signal is very good
4g signal is strong enought better than RC5
3g signal is poor very poor

sokolataki said:
news about poor signal
today i buy a new sim with 4g support
2g signal is very good
4g signal is strong enought better than RC5
3g signal is poor very poor
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Click to collapse
That is my experience however it is due to the bands supported rather than a software bug. Telco is Telstra.

No it is not band problem. I have very good signal with 4.4 all 5.1 roms and N rom too I have the problem only with MM roms

I had awful signal problems with 6.0
No signal problems whatsoever on 4.4, 5.1, 7.0
Hope it helps!

Recommend Custom ROM

Just downloaded Resurrection Remix and have to say I'm liking it a bit better than stock oxegen OS there are so many features and settings to get everything just how you like it! Seems to aslo support OTA (Not sure if that's just for android or the ROM updates as well) if you know please let me know! But anyone looking for a ROM check it out it's easy to install runs stable and butter smooth!

this thread will get flooded with this recommendation so ill post it as first reply:
FreedomOS. Hands down the best rom out there. Nothing compares to stock. Lineage has so many issues even on "Stable" builds. the one that annoys me most is the random throttling of my mobile data speed. Never been on LineageOS for more than 3 days.

OcazPrime said:
this thread will get flooded with this recommendation so ill post it as first reply:
FreedomOS. Hands down the best rom out there. Nothing compares to stock. Lineage has so many issues even on "Stable" builds. the one that annoys me most is the random throttling of my mobile data speed. Never been on LineageOS for more than 3 days.
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Click to collapse
Installed freedom first and reflashed because it was so close to oxegen for me and I'm using a one plus on verizon so I can only use 3g anyway lol so data speeds are not an issue OS wise

TechOut said:
Installed freedom first and reflashed because it was so close to oxegen for me and I'm using a one plus on verizon so I can only use 3g anyway lol so data speeds are not an issue OS wise
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Click to collapse
XD hope ur not payin a lot for that. Kinda sucks that most phones dont work fully on Verizon. But hey if u are puttin up with that just to use OnePlus u rock!

OcazPrime said:
XD hope ur not payin a lot for that. Kinda sucks that most phones dont work fully on Verizon. But hey if u are puttin up with that just to use OnePlus u rock!
Click to expand...
Click to collapse
I mean I am on wifi most of the time and twitter and email load the same on 3G as they do LTE so I'll take the super fast powerful phone that is 100% customizable over a phone that's limited just to have LTE. As far as paying for service I'm not paying anything I'm on a business​ plan and pay nothing. If I ever switch off of that I'll go with a gsm carrier to get full support.

OcazPrime said:
XD hope ur not payin a lot for that. Kinda sucks that most phones dont work fully on Verizon. But hey if u are puttin up with that just to use OnePlus u rock!
Click to expand...
Click to collapse
Plus where I am my LTE is band 4 so my one plus is capible of an LTE signal I just can call or SMS when on LTE only so hoping one day there will be software to fix that

TechOut said:
Plus where I am my LTE is band 4 so my one plus is capible of an LTE signal I just can call or SMS when on LTE only so hoping one day there will be software to fix that
Click to expand...
Click to collapse
Most likely. Folks here have unlocked band support for the 3

OcazPrime said:
Most likely. Folks here have unlocked band support for the 3
Click to expand...
Click to collapse
It's not necessarily​ band supports it's getting it to use cdma and LTE at the same time switch to cdma for calls and sending sms and LTE for data

OcazPrime said:
this thread will get flooded with this recommendation so ill post it as first reply:
FreedomOS. Hands down the best rom out there. Nothing compares to stock. Lineage has so many issues even on "Stable" builds. the one that annoys me most is the random throttling of my mobile data speed. Never been on LineageOS for more than 3 days.
Click to expand...
Click to collapse
Have you tried xXx? If so, how does it compare to FreedomOS?

rickysidhu_ said:
Have you tried xXx? If so, how does it compare to FreedomOS?
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Click to collapse
I havent. I dont really care to swap off freedomos for anything else. Its usually buggy junk. Phone works dont fix it. I too shopped around like you to find a rom with better battery life but to no avail. If these roms do save you battery then it's a couple extra minutes at best. Doesn't make it worth all the flaws. Freedomos is just stock but you dont have to install all the google crap.