Hi well I have the i337m it was for Telcel Mexico the baseband is i337MUMUEMK6, but i'm using it on AT&T, I'm running Phoenix Rom V9.4 but on reboots it takes quite a while to register properly on the network, however once registered is rock solid with Cell Signal and LTE. So I want to know if I need to change the modem and if so, which one.
When I was using Google edition 4.4.2 by Danvdh the delay was less than the one i'm experiencing now.
Thanks.
Nevermind problem solved, the problem was the "special" magic sim elite dual sim adapter. This adapters are expensive as hell for the lifespan they have. They start to fail gradually until they broke...
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Hi,
I have SGH-M919V and its unlocked.
I am on Bell and want to use LTE. But this model has LTE disabled. when i enable it, cant make phone calls.
I cant seem to flash T mobile modem via odin. there is this secure boot issue. the AUTH: Fails.
I was thinking of installing Bell SGH-I337M rom on my phone. Is that possible? If so, how do I go about doing it?
Thanks!
Since you have a T-Mobile variant you should ask in the sgs4 tmobile forum...
However your problem with lte/phonecalls is likely just an APN issue
To further assist we would need to know which carrier you are using the device on
Sent from my SAMSUNG-SGH-I337 using Tapatalk 4
mg2195 said:
Since you have a T-Mobile variant you should ask in the sgs4 tmobile forum...
However your problem with lte/phonecalls is likely just an APN issue
To further assist we would need to know which carrier you are using the device on
Sent from my SAMSUNG-SGH-I337 using Tapatalk 4
Click to expand...
Click to collapse
Hey. thank you for the reply, I really appreciate it.
I've been asking a lot there. No one is answering.
Please help me out, please.
My phone is Canadian variant, originally from WindMobile - SGH-m919V. Wind uses Tmobile freq. = 1700/2100 (AWS) only. No LTE.
I got it unlocked two days ago, and switched over to Bell carrier. Bell uses the other freq and LTE.
When I do force LTE by *#2263# - and enable all LTE, i get LTE speeds. But NO calling or texting. this is with the original Windmobile stock rom. No modification. No root.
I tried to flash Tmobile modem via odin 3.07, didnt work. I used the phone button to load the modem.bin. It gave me AUTH: Fail, secure check fail.
I agree, wrong forum, but we are here to please....
if you have a M919V then you would flash the rom you want, before you boot, flash a tmo m919V kernel, it will boot, manually add your apn settings for your device, it will work with data/wifi/calls.
Good luck....
Hi, im sorry for posting in this forum.
so if I want to flash the bell rom - I337M stock original rom , how do I flash it without booting??
And then how would I flash the tmobile kernel so then I can boot??
I dont mind keeping my current rom - wind stock. But, I want to be able to use LTE like how tmobile has pentaband 3g plus lte.
:/ .
Hi everyone long time reader and I finally got an account. I read through the Sprint section and successfully followed imbmiller's domestic sim unlock guide. I got the sim unlocked but the problem is using a rom like Cyanogenmod, the versions are hard coded to a particular brand. If I download the Sprint release, I dont see any data usage registered (even though it downloads things fine, the data usage keeps saying no data was used), so I was wondering if its ok to install a Tmo rom on a Sprint phone. They are basically the same hardware, right? The TMO rom will simply not use the CDMA bands from sprint, but other than that it should be safe? I have already experimented with this, flashing entire tmobile stock firmware and stock rom on my phone. It actually booted up fine but once it started, I kept getting "com.android.phone has stopped unexpectedly" errors and it was unusable. Later I tried a combination of Tmobile stock rom with a Sprint Kernel and the phone was usuable for a while, and then started crashing constantly. I dont know if it was because I didn't have a working sim card at the time or what, but I am warey of experimenting right now because I must have overwritten the cache/system/firmware partitions at least 20 times and I'm worried about the limited write capacity of emmc.
Now I checked Cyanogenmod's releases and it seems they all use the same kernel, but the rom is just tweaked for each carrier. So to sum up my questions: would I be right to expect no problems in flashing the Tmobile version of CM on my Sprint GS4? And can I flash other Tmo roms on my GS4? Should I expect tmobile firmware to be compatible with the sprint phone, since sprint only has extra features on top of what tmobile phones use?
I would just install the Google play edition like I have on my spring S4. I use T-Mobile Sim and get hspa+ speeds.
Sent from my Nexus 7 using xda app-developers app
Google Play Edition Rom
a.ortega said:
I would just install the Google play edition like I have on my spring S4. I use T-Mobile Sim and get hspa+ speeds.
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
Does that really work? When we install the Google Play Edition Rom for Sprint Galaxy S4 Model #SPH-L720
it unlocks domestic GSM function for T-Mobile??
No, you still have to do the SIM unlock separately. But if you then pop in a T-Mobile Sim and install that ROM, according to that it should give service on T-Mobile.
Hi,
I just purchased a Galaxy s5 sm-g9006v. This is the chinese unicon Samsung galaxy s5. It's unlocked.
I have a t-mobile sim. The phone works fine but the only problem is that it's only running 2g speeds! and i've been reading and i think it's a problem with the bands the phone is working on.
I've also been reading about changing the firm-ware modem but I need a little help.
My question :
Can I change the bands that my phone is using to t-mobile compatible bands to run hspa+ or lte or 4g ?
If so, is it as simple as flashing flashing t-mobile firmware from sammobile (sm-g900t) to my phone via odin?
And if I can fix it without having to flash the whole original firmware by just flashing the modem (which is 5mb), where can i get the modem for that firmware and how do I flash it alone ?
Thank you
I am having signal issues with the n9100 (china mobile). Currently I am in Canada on Rogers network. I have rooted the phone and currently using a custom Rom (Aurora). The firmware is on 5.1.1 and baseband is on the latest. I do get 4G signal but it gets weak when I am inside my house and usually is in Edge mode. The signal was decent when I was in China. I am sure its a modem issue, but is it possible to install a rogers modem onto this without bricking (probably lose dual sim but thats ok)? If not, is there a fix? Can I force my phone to use a certain frequency/band that Rogers uses and see if that helps?
Hi all,
I own a SM-A500M phone. The phone has unlocked stock rom (original rom is not modified by carrier) and updated trough OTA to android 5.0.2. I know 4g does work in my phone because I could use it with my prior carrier, but I recently changed to CLARO and with this new provider I don't have 4g acces, only H+ and it is really slow and laggy connection.
I know the following:
1) Sim card is a compatible 4g nano sim
2) The carrier CLARO has 4g coverage where I live
3) The phone is not the problem
4) I have tried all the usual FAQS (APN's, select LTE in config, reboot) with no success.
5) The phone's variant is right (latinoamerican brand), so It can't be due to frequencies or bands problems.
I asked for help in CLARO and told me that this has happened amongst users with unlocked phones (that is, rom not modified with CLARO's bloatware), and the solution is to flash CLARO's rom. But the problem with this solution is that CLARO hasn't released android 5.0.2 update (and I think it will never update) and I really like android 5 and wouldn't want to return to 4.4.
So, is it true? Is there a chance to fix this problem with minor tweaks? What is the problem here?
Since I recently acquired this phone, I would prefer not lossing warranty, so rooting and custom roms might not be an option.
Thanks in advance. Kind regards!
You could try to flash their rom and check if it works. Then you can be 100% sure that hardware/chip/network provider are fine. I have the same phone on since last week, but still did not go to get the chip at a movistar office. Maybe you need to activate the chip and they refuse to do it unless you get their rom. Maybe just getting their rom, and then flashing back the updated stock one or a CM or whatev would be enough.