Buying SG4 in VN - AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin

I'm in Vietnam for vacation, the GS4 has been released here already.Was wondering if I buy GS4 here can I later flash different modem like att or tmobile US to use on their network?
My main concerns is LTE on att and tmobile.
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Most likely LTE will not work so if thats your main concern just get it in the U.S unless you dont mind being on 3g maybe H+
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Related

s4 question

Is it true ths the international version wont work on verizon 4gLTE . I am in NYC , I have verizon and debating on which version to get. I so can wait to get rid of this bio
yes, that's correct. Verizon doesn't even use SIM cards.. so you won't be able to use it.
the only network that might get it is AT&T. T-Mobile can use the phone, but only with 2G, so if you really want octa version, you'll have to switch to AT&T. this said, you'll get 3G, but whether or not you'll get LTE is another thing.. the rest of the world is pretty far behind us in LTE sadly..
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actually tmobile will be able to use 3g on the intl version also, IF the area is refarmed to 1900.
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How about tmobile hspa+ 42mbps?
i don't think it works on those networks at all. no sim...

is i9505 just an unbootlocked i337?

is there any difference between the two besides ours being boot locked and network locked?
what I'm really asking is if I get the i9505 can I use it on att and get all the compatible network bands?
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I don't think you'll get LTE with it though.
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soraxd said:
is there any difference between the two besides ours being boot locked and network locked?
what I'm really asking is if I get the i9505 can I use it on att and get all the compatible network bands?
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Click to expand...
Click to collapse
I've been trying to look into this, and I'm pretty šure that the i9505 doesn't have AT&T LTE band support =[ Good news is that the Tmobile variant will have support for AT&T LTE bands without a locked bootloader. I'm going to just buy an unlocked Tmobile variant and use it on AT&T to sidestep the whole bootloader garbage.

Tmo on att lte?

I have a extra tmo s4 and I was wondering if I were to unlock and flash an att rom n apn'z would I still get lte speed.
And does a bad tmo imei get blocked on att too?
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It will work as long as the imei isn't affected on the att side. If device was reported lost or stolen it will be blocked on both carriers I believe. If just unpaid on tmobile it sometimes works but I'm not for certain. Att Roms will work but you'll have to flash a T-Mobile or i9505 kernel I believe as most att custom Roms have loki kernels.
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Thanks Febby. I'm glad u reminded me about the kernel. Probably would of bricked.
Its just an unpaid tmo phone from a family plan gone wrong.
I suppose I could use a GE rom too I hope.
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spodie said:
Thanks Febby. I'm glad u reminded me about the kernel. Probably would of bricked.
Its just an unpaid tmo phone from a family plan gone wrong.
I suppose I could use a GE rom too I hope.
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Any ROM will work, such as i9505 Roms or even T-Mobile. Just add the APN for att.
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L720 on Verizon??? I have it working but the signal bar says roaming when it is not.

Hello.
I have a L720 with a active vzw sim card and the phone is running cm11 but it says roaming in the status bar but the phones 3g and phone and texting works. Is there a way to get it to say 3g of lte up there? A better rom maybe? I have searched and there is no one that has this phone on vzw. Any help would be so nice! Thanks
Have a great night.
I'm pretty sure Verizon and sprint use different spectrums for LTE you'll get 3g but no lte
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OK but the phone should have the right stuff but what about the prl and roaming thing?
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I see it has extended pcs for late bands lol
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So gsm on t mobile would be better.
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tydiamond11 said:
So gsm on t mobile would be better.
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Yeah sprint galaxy s4 has the bands for T-Mobile and Att 3g and hspa+ networks Verizon I have no clue which bands they use you'd be better off just trading in and getting a Verizon phone to get their speeds
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I agree, if you are paying the premium for Verizon service I would just get the Verizon version of the phone.
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Thanks this is not my phone just was testing it that's all lol thanks again! The friend that owns this is going to try it on t mobile next but the first time they tried it did not work only data worked for some crazy reason voice and texting came on and went off so we will try that latter.
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[Q] Does the jfltespr work on tmobile network?

I'm thinking of switching to tmobile, does anyone know if our device will fully work on their network?
Also, does anyone know of any sprint phones I can purchase today that will work fully on their network, even any iphones possible.
There's whole thread on how to unlock the Gs4 for T-Mobile so yes. And search more.
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No not fully, you will not get LTE. Sell your Sprint phone on EBay or Craig's list and buy a Tmobile phone for full functionality.
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