[Q] kernel and Modem question S4 Tmobile - T-Mobile Samsung Galaxy S 4

HI all
I have an international i9505, and I will be moving to USA soon.
I want to use Tmobile sim card.
Is it safe to just flash a Tmobile S4 kernel on top of my current rooted stock TW rom?
I want to know because of the frequency Tmob uses is 1700/2100 and my current phone does not support those frequencies I think.
Or can I just flash a Tmobile S4 MODEM ?
Please can you help..
cheers

nm8 said:
HI all
I have an international i9505, and I will be moving to USA soon.
I want to use Tmobile sim card.
Is it safe to just flash a Tmobile S4 kernel on top of my current rooted stock TW rom?
I want to know because of the frequency Tmob uses is 1700/2100 and my current phone does not support those frequencies I think.
Or can I just flash a Tmobile S4 MODEM ?
Please can you help..
cheers
Click to expand...
Click to collapse
As far as the whether or not you'll be able to get LTE, I can't answer. I've looked around a little bit and got conflicting reports; though I haven't dug too deeply into it. Basically, T-Mobile says it should, but the i9505 doesn't support frequency 1700; only 2100. T-Mobile uses band 2100 for both 3G and 4G, depending on the markets apparently... ***Note: I'm not saying every word of that is 100% correct, just from the extremely small bit of googling I did on the subject, that's the conclusion I was able to draw.
As for the kernel; don't believe you want to flash the M919 kernel on your i9505. Most it will do is fail to boot if they're incompatible though, so make a nandroid. The kernel also wouldn't affect your ability to pick up the 1700mhz band, so that isn't even a consideration as to whether you should flash a TMO kernel or not.

Related

[Q] are there roms that once flashed will remove LTE?

Would like to know if my note 2 is a LTE version, will there be cases where i flash a rom i wont have LTE anymore?
Do i have to look out for anything in particular for a rom to support LTE?
The root process for LTE and non LTE is different?

[Q] Stock sgh t889 modem on sgh i317?

I've been using my rooted note to with tmobile for a while, and since I flashed a few roms, I've noticed that my 4g is a bit slower. Instead of flashing back to the att stock rom, I was wondering if I could flash the tmobile stock rom on it. I only ask because the att variant as the tmobile 4g band unlocked already and every rom I've downloaded is compatible with both. Virtually the same phone, so I figured this may be possible. Any ideas?
geekgreek said:
I've been using my rooted note to with tmobile for a while, and since I flashed a few roms, I've noticed that my 4g is a bit slower. Instead of flashing back to the att stock rom, I was wondering if I could flash the tmobile stock rom on it. I only ask because the att variant as the tmobile 4g band unlocked already and every rom I've downloaded is compatible with both. Virtually the same phone, so I figured this may be possible. Any ideas?
Click to expand...
Click to collapse
first flash the aws dummy zip then the tmobile rom and put in the tmobile apn settings for lte and you will be set I just put the tmobile rom on my unlocked att note 2 and I luv it highest speeds I seen so far has been like 32 dwn and 32 up thats fast considering tmobile just got lte in Dallas this month
Slabking81 said:
first flash the aws dummy zip then the tmobile rom and put in the tmobile apn settings for lte and you will be set I just put the tmobile rom on my unlocked att note 2 and I luv it highest speeds I seen so far has been like 32 dwn and 32 up thats fast considering tmobile just got lte in Dallas this month
Click to expand...
Click to collapse
I've already run the aws dummy. Glad to hear that the sght889 stock Rom works on i317!
geekgreek said:
I've already run the aws dummy. Glad to hear that the sght889 stock Rom works on i317!
Click to expand...
Click to collapse
some of the att mods work as well I have mine underclocked at 200 and overclocked at 1920 and battery life is a1 but it works flawlessly just keep in mind all tweaks you can flash so far that I know need to be att from there threads on here so enjoy it I dont see myself going to another carrier no time soon with this being done
aws dummy zip?
Slabking81 said:
first flash the aws dummy zip then the tmobile rom and put in the tmobile apn settings for lte and you will be set I just put the tmobile rom on my unlocked att note 2 and I luv it highest speeds I seen so far has been like 32 dwn and 32 up thats fast considering tmobile just got lte in Dallas this month
Click to expand...
Click to collapse
Can you please add a link to aws dummy zip. I am new in this world. Just bought an unlocked i317 but want to use tmobile sim. While flashing tmobile rom on my i317, it fails at radio part. Would like to try this method. But I could not find aws dummy zip on the net.

[Q] unlocked Samsung Galaxy SIII on AT&T network

Hi,
I have SIM unlocked, rooted Tmobile's samsung Galaxy SIII (SGH-T999); put AT&T SIM card and it is working fine. As a fundamental question on loading custom ROMs, should I be picking ROMs from AT&T forum in XDA or Tmobile in XDA??? So far I have been using Avatar/Liquid Smooth ROM built for Tmobile....still it doesnt make sense to me as i am currently on AT&T....I dont want to brick my phone by doing something wrong.
Can someone reply?
Thanks
Mahesh
BTW - ignore my signature....i am unable to edit them - dont know why - there is no option to edit signature!
kmahesh said:
Hi,
I have SIM unlocked, rooted Tmobile's samsung Galaxy SIII (SGH-T999); put AT&T SIM card and it is working fine. As a fundamental question on loading custom ROMs, should I be picking ROMs from AT&T forum in XDA or Tmobile in XDA??? So far I have been using Avatar/Liquid Smooth ROM built for Tmobile....still it doesnt make sense to me as i am currently on AT&T....I dont want to brick my phone by doing something wrong.
Can someone reply?
Thanks
Mahesh
BTW - ignore my signature....i am unable to edit them - dont know why - there is no option to edit signature!
Click to expand...
Click to collapse
You should flash rom's specific to your phones hardware/model number. It seems to me *most* of the hardware is the same between the i747 and t999 from what i've read but always best to err on the side of caution.
dntesinfrno said:
You should flash rom's specific to your phones hardware/model number. It seems to me *most* of the hardware is the same between the i747 and t999 from what i've read but always best to err on the side of caution.
Click to expand...
Click to collapse
by doing that, in my case, would my ROM be optimized for AT&T??
kmahesh said:
by doing that, in my case, would my ROM be optimized for AT&T??
Click to expand...
Click to collapse
Most likely, but tread with caution. The only issue you might encounter are APN settings that you could always edit manually. From what I understand, the T-Mobile Galaxy S3 is almost identical to the AT&T one, and in certain cases, some people have been able to run T-Mobile roms on the AT&T one.
kmahesh said:
by doing that, in my case, would my ROM be optimized for AT&T??
Click to expand...
Click to collapse
The only thing that is carrier specific as far as custom ROM's are concerned is the ability to connect to the network in question, its the hardware the ROM is designed for that is important, minus any carrier bloat apps that may be included in a ROM (non issue if using an AOSP based ROM). Flashing software to an unintended device will most likely be bad news. As drx said worst case you would have to manually enter the apn settings. If i recall the only real difference in the TMo and ATT S3's is the fact that the T999 can connect to the 1700mhz band and the i737 can't (natively).

[Q] At&t phone on Tmobile network

A friend upgraded his phone to the note 3 and gave me his At&t note 2. I am with Tmobile. I am going to have it unlocked. I want to root it and flash a rom to it. Since its was on At&t network do I flash it with a rom from the At&t section or Tmobile section? If i am missing anything else that is required other than which section to use for rom flashing please feel free to inform me.
graycd01 said:
A friend upgraded his phone to the note 3 and gave me his At&t note 2. I am with Tmobile. I am going to have it unlocked. I want to root it and flash a rom to it. Since its was on At&t network do I flash it with a rom from the At&t section or Tmobile section? If i am missing anything else that is required other than which section to use for rom flashing please feel free to inform me.
Click to expand...
Click to collapse
You can flash just about any rom from the AT&T section because most do not flash over the modem you have installed. I believe the DN3 rom is the only exception to this rule. For AOSP based roms, you can flash any of the roms here. You may also want to check the N7105 XDA area because it has more options than the TMO Note 2 section.
Bajan will probably add more clarification here because he has a TMO and AT&T Note 2 and visits all 3 forum areas.
save some Dough!!
I have a AT&T i337 lost service then went to local cell store.. Switched to Met==PCS.. 60/month unlimited data.. Plus they are on the T-Mobile network just as good just cheaper.. I haven't been throttled at all that I can tell...
I have the ATT Note 2 and currently using it with TMo and I am getting LTE speed and HSPA+ on the reform 1900 area. You don't have to do anything with the modem as long as you have it unlocked. I have only been using ATT based rom on my phone. And everything works, MMS, data, call etc. I do encounter some issue where it hangs while pulling data (not too often) but for most part it works great. I either just have to turn the network on/off or just a restart. I do not use any of the Tmo software like visual voice mail or wifi calling (as you won't be able to use it with any of the ATT ROM).
I have a One X on T-Mobile from AT&T and so far everything is great. Just have to be in a 1900 MHZ or LTE area to get high speed data.
Sent from my HTC One XL using XDA Free mobile app
I also have the i317 on T-Mobile. I am using the latest MK6 modem for the i317. You can also optionally perform the AWS Mod to enable 4G on the 1700MHz band. Whatever you do, make sure you do not flash a modem meant for the T-Mobile Note 2 (T889) or you will end up with a brick. As was already mentioned any of the ROMs in the Development section will work for this device.
graycd01 said:
A friend upgraded his phone to the note 3 and gave me his At&t note 2. I am with Tmobile. I am going to have it unlocked. I want to root it and flash a rom to it. Since its was on At&t network do I flash it with a rom from the At&t section or Tmobile section? If i am missing anything else that is required other than which section to use for rom flashing please feel free to inform me.
Click to expand...
Click to collapse
You can flash it with a rom from Tmobile Section

After a successful permanent UNLOCK

I Have successfully unlocked my t mobile edge+ for any GSM carrier. My questions is now that i have no restraints (Rooted/Unlocked) can i use any rom now. I know the CDMA versions verizon/sprint are off limit but other GSM versions? Or am I still burdened by the G928T model forever??
I have an ATT Edge+ that I use with T-mobile without wifi calling, looking for the same answer but apparently are some hardware differences that won't let you use ROMs from other versions of the phone.
You can use the international roms for the edge + just make sure when you click on them look for the rom that's compatible with the T model, you could also use the T mobile note 5 too
Sent from my SM-N920T using Tapatalk
Umm you didnt need to do the carrier unlock to flash any "GSM ROM," only an unlocked bootloader was needed...
I am interested in knowing, which of these "GSM ROMs" were you looking forward to flashing, now that you're no longer hitched?

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