Hey guys, I'm getting my hands on my friend's Galaxy S4. He is on an AT&T plan and got then phone from them through an upgrade. I personally prefer Verizon. I was wondering if I could get some help on making his phone work for me. I have a SIM card and everything, currently using a RAZR MAXX. I've done a little looking around, and from what I gathered, the phone is capable of working with verizon, but I'll have to load a different kernel and ROM onto it. I've looked through http://forum.xda-developers.com/showthread.php?t=2295557 that thread and found some nice info, but I'm not yet confident enough in my knowledge to go through with it. I've decided on the http://forum.xda-developers.com/showthread.php?t=2305781 CLEANROM 1.6.5, but I don't know what else I'm going to need to have in order to make this phone work for me. I also don't know if I'll need to download the Verizion or the AT&T version of this. Thanks for all the help, I'm really wanting to make this work for me so I can actually get a powerhouse of a phone.
Xray55 said:
Hey guys, I'm getting my hands on my friend's Galaxy S4. He is on an AT&T plan and got then phone from them through an upgrade. I personally prefer Verizon. I was wondering if I could get some help on making his phone work for me. I have a SIM card and everything, currently using a RAZR MAXX. I've done a little looking around, and from what I gathered, the phone is capable of working with verizon, but I'll have to load a different kernel and ROM onto it. I've looked through http://forum.xda-developers.com/showthread.php?t=2295557 that thread and found some nice info, but I'm not yet confident enough in my knowledge to go through with it. I've decided on the http://forum.xda-developers.com/showthread.php?t=2305781 CLEANROM 1.6.5, but I don't know what else I'm going to need to have in order to make this phone work for me. I also don't know if I'll need to download the Verizion or the AT&T version of this. Thanks for all the help, I'm really wanting to make this work for me so I can actually get a powerhouse of a phone.
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Nope. it won't work.
xuanphucn said:
Nope. it won't work.
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Is what I read about on the post I linked not true then?
Xray55 said:
Is what I read about on the post I linked not true then?
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Your link is to a thread regarding other variants of S4 roms. Although you can use other S4 roms on the i337, the phone wont work on verizon carrier.
Kaze105 said:
Your link is to a thread regarding other variants of S4 roms. Although you can use other S4 roms on the i337, the phone wont work on verizon carrier.
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I'm not sure about that. ROM shouldn't matter too much, you just have to have it SIM unlocked and I believe it won't work too well due to the different frequencies between carriers and so you may not get LTE or something. Maybe someone can correct me though.
Sent from my GT-I9505 using xda app-developers app
Verizon/Sprint phones use CDMA.
ATT/T-Mobile use GSM
I don't think you can use a CDMA phone on a GSM network and vice versa.
EDIT:
Per the replies below, it looks like it ispossible.
Here is a thread from the Verizon forums.
Also, if this WIKI page is correct, the Verizon S4 has both CDMA and GSM radio's where the ATT S4 only has a GSM radio.
The first thing to identify on the phone is whether or not it is on the stock AT&T ROM and what version that ROM is. If it is I337UCUAMF3 then changing the bootloader/kernal/rom is not even an option to begin with which means there would be no way to change out the modem to support other carrier bands (such as those used by Verizon). On top of that, although I have heard that the modem hardware is the same on all versions of the S4 I have not heard anyone confirm that they have successfully enabled CDMA services on the I337.
rayburne said:
Verizon/Sprint phones use CDMA.
ATT/T-Mobile use GSM
I don't think you can use a CDMA phone on a GSM network and vice versa.
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There are some that work on other networks without the need for modem changes. I read about some using the Verizon on AT&T, and I used the droid Bionic, a Verizon exclusive with a locked boot loader, on AT&T.
Sent from my SGH-I337 using xda app-developers app
The strange thing is you can use a Verizon S4 on AT&T but you can't do it the other way around. Verizon phones all come unlocked, allowing you to use the phone anywhere around the world.
The AT&T S4 does not contain the CDMA chip allowing you to use it on the Verizon network, plus it has to do something with IMEI. If you give the IMEI to Verizon, they won't be able to locate which device you are trying to activate because it's not in the system. But if you use a Verizon S4 and put in a AT&T SIM card, you don't have to register the IMEI with AT&T or T-Mobile.
emckai said:
The strange thing is you can use a Verizon S4 on AT&T b.
you can't do it the other way around. Verizon phones all come unlocked, allowing you to use the phone anywhere around the world.
The AT&T S4 does not contain the CDMA chip allowing you to use it on the Verizon network, plus it has to do something with IMEI. If you give the IMEI to Verizon, they won't be able to locate which device you are trying to activate because it's not in the system. But if you use a Verizon S4 and put in a AT&T SIM card, you don't have to register the IMEI with AT&T or T-Mobile.
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I can confirm that this is true about the verizon s4. I have a Verizon s4 and have used AT&T and straight talk on it. My brother uses that phone daily on his AT&T account.
I will test my AT&T s4 when I get around to finding my sim card.
sundigen said:
I can confirm that this is true about the verizon s4. I have a Verizon s4 and have used AT&T and straight talk on it. My brother uses that phone daily on his AT&T account.
I will test my AT&T s4 when I get around to finding my sim card.
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I'm pretty sure you won't be able to use an AT&T S4 on Verizon because the AT&T S4 doesn't have the CDMA capabilities.
emckai said:
I'm pretty sure you won't be able to use an AT&T S4 on Verizon because the AT&T S4 doesn't have the CDMA capabilities.
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Yea I noticed that the ATT S4 doesn't have everything that the Verizon S4 has in the service menu. Like I can turn on all the different bands in the service menu, but on my ATT S4 I get restrictions on wcdma.
I'm new to all this. I traded a iPhone for the ATT version because I couldn't figure out how to make the Verizon version work on straight talk..
Not two days after I have the ATT I somehow got it working... Lol. So now I have two with unlocked bootloaders and sum unlocked...
sundigen said:
Yea I noticed that the ATT S4 doesn't have everything that the Verizon S4 has in the service menu. Like I can turn on all the different bands in the service menu, but on my ATT S4 I get restrictions on wcdma.
I'm new to all this. I traded a iPhone for the ATT version because I couldn't figure out how to make the Verizon version work on straight talk..
Not two days after I have the ATT I somehow got it working... Lol. So now I have two with unlocked bootloaders and sum unlocked...
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Methods used to obtain this?
I am I believe sim unlocked because I no longer see the prompt for password apon boot but the verizon doesn't connect.
Thank you in advance!
When on download mode it says write protection enabled.....
its not letting me flash an AT&T or Tmobile modem either and I suspect that it is related to the write protection being enabled, Is it possible to disable said write protection? I've searched all over XDA and all I keep getting is some safestrap recovery nonsense
First of all. why are you trying to flash a ATT or T-mobile módem m
Sent from my SPH-L720 using Tapatalk
Proxy638 said:
When on download mode it says write protection enabled.....
its not letting me flash an AT&T or Tmobile modem either and I suspect that it is related to the write protection being enabled, Is it possible to disable said write protection? I've searched all over XDA and all I keep getting is some safestrap recovery nonsense
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Write protection enabled has nothing to do with the bootloader being locked. It says that on every phone. The reason why it fails is those modems aren't compatible with our phone. If you are trying to use your phone on those networks you have to unlock your sim slot and change the apn.
cruise350 said:
Write protection enabled has nothing to do with the bootloader being locked. It says that on every phone. The reason why it fails is those modems aren't compatible with our phone. If you are trying to use your phone on those networks you have to unlock your sim slot and change the apn.
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the point is that I want to enable 4G on those frequencies.
If I'm not wrong they should be compatible but for they are being blocked off by software means?
Proxy638 said:
the point is that I want to enable 4G on those frequencies.
If I'm not wrong they should be compatible but for they are being blocked off by software means?
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Your wrong, the Sprint S4 does not have those LTE frequencies. You can only receive LTE on the frequencies that the Sprint S4 supports and it doesn't support the AT&T, Tmobile, or Verizon LTE frequencies. If you are going to use the Sprint S4 on those networks you will only get 3g, edge, or maybe HSPA+ if you have the right APNs installed. If you want to use LTE on those networks you should buy a phone for those networks.
cruise350 said:
Your wrong, the Sprint S4 does not have those LTE frequencies. You can only receive LTE on the frequencies that the Sprint S4 supports and it doesn't support the AT&T, Tmobile, or Verizon LTE frequencies. If you are going to use the Sprint S4 on those networks you will only get 3g, edge, or maybe HSPA+ if you have the right APNs installed. If you want to use LTE on those networks you should buy a phone for those networks.
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i'm not looking towards using it on sprint, i'm looking towards activating at&t 4G for use on a at&t network or international 4G for use on an international
there shouldn't be a requirement for buying a new phone when the only main differences are software.
Proxy638 said:
i'm not looking towards using it on sprint, i'm looking towards activating at&t 4G for use on a at&t network or international 4G for use on an international
there shouldn't be a requirement for buying a new phone when the only main differences are software.
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There are to many hardware differences to mention between the Sprint CDMA S4 and the GSM/international version. The main thing being is the SPH-L720 does not include the hardware to receive the LTE frequencies that AT&T uses and the rest of the world. Sprint never spend the money on extra hardware. In fact, the Sprint S4 isn't even compatible with half of Sprint's LTE network. It isn't a software problem, the hardware is not there. Be happy with 3g or buy an AT&T phone!
Sent from my SPH-L720 using Tapatalk
[Q] Can I be on Sprint and T-mobile at the same time after domestic unlock?
I was planning to a get a S4 L720 on Freedompop (runs on sprint) for the free 500mb data plan and I was thinking if i could get my tmobile prepaid voice only to work in conjunction with the phone. Could I get the CDMA and GSM at the same after I do the domestic unlock for the phone?
Would flashing a Tmobile Rom and using sprint apn work?
No it's not possible to do. Either one.or the other.
ok. thanks for the help
I was under the impression that the sprint GALAXY S4 didn't have the GSM antenna. Is that incorrect?
firesoul453 said:
I was under the impression that the sprint GALAXY S4 didn't have the GSM antenna. Is that incorrect?
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No
Also you can switch effortlessly between tmobile and sprint by changing your network preference. But you can't receive calls on the two networks simultaneously.
I have an Sprint Galaxy S4 SPH-L720 unlocked and rooted on T-Mobile right now.
The only issue is when I call it goes through but the phone app hangs.
Sound doesn't work either.
I have a AT&T galaxy S4 and would like to put it on Sprint.
do I need to or Can I use a sprint Rom on it? is there anything else I would need to do?
zero18 said:
I have a AT&T galaxy S4 and would like to put it on Sprint.
do I need to or Can I use a sprint Rom on it? is there anything else I would need to do?
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Don't believe there is anyway to do that.
AT&T uses GSM networks while Sprint uses CDMA networks. Two different radios and signals.
Sprint phones sometimes have a SIM slot but that is mostly for LTE. Some Sprint phones can be unlocked to use on AT&T but not vise versa.
Sent from my SPH-L720 using Tapatalk
if i use the ZTE Z813 that i got for free or basically free when signing up for cricket i always get LTE. when i put my sim in my older Galaxy S4 SGH-I337 16GB AT&T Branded phone (stock rom OC3) i get mostly EDGE. if i reset may data connection i will get LTE for a while but then always seems to revert to EDGE. i get nothing in between. is there some reason why i can get consistent LTE on my Galaxy 4? Could I have some setting wrong? maybe phone is faulty. the light up buttons on bottom no longer work. should i replace S4 with S5? Should I get consistent LTE using S5 on Cricket? Thanks for suggestions.
Does the phone imei have to be registered with cricket?
audit13 said:
Does the phone imei have to be registered with cricket?
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gee i don't know that answer. have never thought about that. i will check that out