yashsingh1/xdaforums huggingface dataset:
[Sprint Samsung Galaxy S 4 General] wildpig1234:
So would this also work for AT&T sim? has anyone else tried? Btw, was thinking of updating to 4.3 and MJA but i guess i will have to hold off on that if i want sim unlock international or domestic? I am on MF9 with sim international unlock right now. Would I have to go down to MDC to get this to work?

Also, if you want to go back to sprint again, how would you do it?
[Sprint Samsung Galaxy S 4 General] nicotheandroidguy:
You can use MF9, MDL and MDC for the domestic unlock.
[Sprint Samsung Galaxy S 4 General] laoh:
Hi thanks so much for putting this together all in one place!

Hi I'm on MF9, rooted, locked.

So really the two major steps are:

1. Do int'l unlock first (autoprime)

2. Then do domestic unlock

My question - after you get both unlocks working and say you have your phone working on tmobile, what do you need to do to get it working on Sprint... rather, is the phone operatable on both Sprint and Tmobile? Or do you have to do some tinkering to get it back to working on Sprint again. I'd like to have the flexibility of popping SIMs in and out and switching carriers at will, Sprint included (b/c I don't want to cancel Sprint just yet...eventually, but not immediately). Thanks!

---------- Post added at 09:59 AM ---------- Previous post was at 09:53 AM ----------

Another question :)

When you're tinkering with swapping out modems and APN settings, does doing a nandroid backup prior help so when you have an "oh sh!t" moment, you can just do a full restore...? Or is what's backed up in nandroid outside (excludes) these changes? Thanks.
[Sprint Samsung Galaxy S 4 General] nicotheandroidguy:
OK the answer to the first question is to put your sprint sim card back in then put your phone back in to lte/cdma auto through the tell info app through Google play device info then change it in to lte/cdma auto.

Answer to the second question is that the nandroid might help you in a oh sh!t moment but the modem and settings for the unlock stay after a factory rest but a other update could kill it. A stock Odin flash and dailing ##72786# could also kill both unlocks.
[Sprint Samsung Galaxy S 4 General] imbmiller:
Someone on this thread got it to work. I'm unsure if Att has hspa+ tho so you might be relegated to edge
[Sprint Samsung Galaxy S 4 General] TheZander:
Nevermind, it works on Metro it just matters the SIM http://xdaforums.com/showpost.php?p=47624568&postcount=568
[Sprint Samsung Galaxy S 4 General] imbmiller:
Did you install hiapn and add the apn? What baseband are you on? What rom and kernel? I'm not super positive about mvno s but I'd probly go back to the beginning and start over.
[Sprint Samsung Galaxy S 4 General] TheZander:
Sorry I had to edit my post. It did work. There are two different GSM SIMs the one with the dot seemed to work. I Got Edge, 3G, and H+. It is awesome. I also still have 3G with Sprint with the SIM in. I got two phones in one. Thanks.
[Sprint Samsung Galaxy S 4 General] the.joeba:
So I've been on T-Mobile for the last 24 hours but my HSPA+ signal is weak and slow (under 1mb), while my co-worker on T-Mobile (and a T-Mobile phone) has full HSPA+ signal and speed (5-9mb).

Any thoughts on what could be the cause?

I'm running CM11 on MDC. I'll try some other combinations tonight to see if things change.
[Sprint Samsung Galaxy S 4 General] snekiam:
Did you ever get the unlock to work for MJA?
[Sprint Samsung Galaxy S 4 General] made-en-ocho-cinco:
sprint galaxy s4 sim unlock

i have my l-720 connected to simple mobile!!!!!!!!!!!!!!hell yea man this works
[Sprint Samsung Galaxy S 4 General] snekiam:
I was able to flash an MF9 rom with recovery, and no matter what I do, I get no signal. I was able to get signal for 3 seconds once, but it did not stay. I got to the MDC modem, and MF9 modem, no difference. Anyone able to help?
[Sprint Samsung Galaxy S 4 General] imbmiller:
This is nowhere near enough information to be able to help you.
[Sprint Samsung Galaxy S 4 General] snekiam:
What info do you want me to provide? I am on an MF9 rom, with an MF9 baseband, and KToonsez kernel. When I turn the phone on, it says EMERGENCY CALLS ONLY. When I search for networks, it says "The selected network (AT&T) is not available.
[Sprint Samsung Galaxy S 4 General] AlpineMan:
For those still having issues, you may just want to consider posting an ad in craigslist for a straight trade to a Verizon S4 which is unlocked out of the box and usable on ANY GSM network in the world. Just add your APN to get data and MMS working.
[Sprint Samsung Galaxy S 4 General] daac87:
4.3 mk2

My baseband ends in 4k2 and im on 4.3, will i be able to downgrade or will i have the same problem as everyone that are on mja?
[Sprint Samsung Galaxy S 4 General] snekiam:
You will have the same problems unless you are on 4.2.2
[Sprint Samsung Galaxy S 4 General] daac87:
is it possible to downgrade to 4.2.2?
[Sprint Samsung Galaxy S 4 General] snekiam:
In short, yes, but the unlock will not work unless you started out on MF9, ie, 4.2.2, and were never on 4.3 without preserving your bootloader.
[Sprint Samsung Galaxy S 4 General] daac87:
in other words now that i am on 4.3 i wont be able to unlock the phone?
[Sprint Samsung Galaxy S 4 General] snekiam:
Currently, yes, as you cannot flash the modem required for the unlock due to the new bootloader.
[Sprint Samsung Galaxy S 4 General] en11gma:
i would also like to know what is going on with your situation?

i mean did you get any help on figuring this out?

i bought a sph-l720 a couple months ago that had a bad lcd

i have never been able to turn it on to see what firmware it has but i know its not mja so i will most likely be doing exactly what you have done but i will keep it as much stock as i can especially with the kernel

basically i will have same setup as you though

so im interested in knowing whats going on too
[Sprint Samsung Galaxy S 4 General] snekiam:
I had a phone with MJA, and had used custom recovery to go back to MF9. I attempted to flash an MF9 modem, but it failed. When I booted, it said in about that I had MF9 everything, but it was corrupt. If you do not have MJA, this will work fine.
[Sprint Samsung Galaxy S 4 General] en11gma:
so we can do this on a stock rom before mja?

will it be a world phone just like the verizon S4?

i mean can a friend of mine just drop their sim card in my slot and power on the phone and it work?
[Sprint Samsung Galaxy S 4 General] snekiam:
Yes
[Sprint Samsung Galaxy S 4 General] en11gma:
so if its really like that then why do we have to goto apn settings?

on my friends phones when they switch sim cards they dont have to change any apn settings
[Sprint Samsung Galaxy S 4 General] snekiam:
To get data, you need APN settings to be correct. I believe on some custom roms you do not need to setup APN settings.
[Sprint Samsung Galaxy S 4 General] en11gma:
oh

thats pretty cool about the custom roms.

the only one i normally run is cyanogenmod's

does that one have automatic apn settings?

i think thats important as if i ever do sell the phone it should be easy for the next person.

anyhow with a true factory unlocked phone they must have something in there that automatically reads the sim card correctly as they dont have to mess with the apn settings

btw. cant wait for my lcd to get here.

this phone looks sweet as far as its specs
[Sprint Samsung Galaxy S 4 General] snekiam:
I believe cyanogenmod does read the MNC off the sim card and setup the apn settings automatically, but not sure about that.
[Sprint Samsung Galaxy S 4 General] en11gma:
im in the irc channel so i gonna ask them

didnt know what to ask until you said the "MNC" so thats a good start point

thanks

isnt there an app that we can add from play store to a stock rom that will do that that is free?
[Sprint Samsung Galaxy S 4 General] snekiam:
I have no idea about the app, but it really isn't that difficult to set the APN settings.

EDIT:

MNC is the Mobile Network Code
[Sprint Samsung Galaxy S 4 General] en11gma:
for us its easy

for someone new to phones and just wants to pop in a sim card and go its a lil more difficult but yea you right.

easy peasy
[Sprint Samsung Galaxy S 4 General] snekiam:
Anyone who successfully did this care to post a video? I am a little confused about the watchdog taps.
[Sprint Samsung Galaxy S 4 General] staplestaples:
Does this also work on H2o with HSPA+?

H2o is a MVNO of ATT.
[Sprint Samsung Galaxy S 4 General] snekiam:
It should work, no reason why it shouldn't.
[Sprint Samsung Galaxy S 4 General] nicotheandroidguy:
Yes all MVNO's work except Metro PCS who requires a IMEI check, I'm using Net 10 with AT&T it works flawlessly.
[Sprint Samsung Galaxy S 4 General] snekiam:
Care to post a video tutorial? I feel like I am confused about the watchdog taps..
[Sprint Samsung Galaxy S 4 General] nicotheandroidguy:
Sorry I don't have a good camera but I can explain the watchdog process. Tap the first watchdog 6 times then press the physical menu key then the back option in the menu if it does nothing then tap the last watchdog 6 times then manually reboot wait a minute and you should see signal bars. Note Be Sure to be in GSM/UMTS mode during the whole process with a activated AT&T, T-Mobile or MVNO sim.
[Sprint Samsung Galaxy S 4 General] snekiam:
Will it work with a non-activated sim card?
[Sprint Samsung Galaxy S 4 General] nicotheandroidguy:
It depends on the sim T-Mobile is the only sim that shows up with signal with a non activated sim card.
[Sprint Samsung Galaxy S 4 General] snekiam:
For whatever reason, the unlock is not working. When I search for networks, I detect both AT&T and T-Mobile. I tap T-Mobile, and it says Regestering on T-Mobile.. for a while. Then it errors out and says "Unable to connect, try again later". When I reboot from that, it says Selected Network (T-Mobile) unavailable. I am on MDC modem, and MDC rom The Blu Kuban. Anybody got any ideas?

EDIT: on KToonsez kernel
[Sprint Samsung Galaxy S 4 General] nicotheandroidguy:
Activate the sim by googling t mobile prepaid activation activate it on pay as you go it is free to activate, just to make sure it's not the sim then retry the watchdog steps reboot and let it find the network don't tap t mobile make sure it was set to automatic before trying the watchdogs.
[Sprint Samsung Galaxy S 4 General] snekiam:
Still a circle with a line through it in my menu bar. Guess I cut my sim card badly. :( Going to radioshack tomorrow for a new sim card to try this out again. :fingers-crossed:
[Sprint Samsung Galaxy S 4 General] nicotheandroidguy:
Good Luck ask them if they will give you a micro sim instead of a standard sim if not check T-Mobile's website at http://prepaid-phones.t-mobile.com/...ro-SIM-Card-Activation-Kit-No-Annual-Contract they are $10 incase radio shack won't give you a micro sim.
[Sprint Samsung Galaxy S 4 General] cyrusalmighty:
Looking through all the posts I see a few AT&T S4 users who asked this question but it has not been answered yet. Has anyone gotten the SPH-L720 to work on AT&T LTE 4G or any carriers 4g yet(not +H). I am so tired of my MF3 AT&T s4 and have a Sprint S4.
[Sprint Samsung Galaxy S 4 General] snekiam:
I am 99.9% sure it will NOT work on LTE with anybody but sprint. The frequencies are different, and therefore the hardware is different.
[Sprint Samsung Galaxy S 4 General] Gambitv01:
so it will not work on 4.3?
[Sprint Samsung Galaxy S 4 General] snekiam:
Nobody has gotten it to work on 4.3 yet.
[Sprint Samsung Galaxy S 4 General] Gambitv01:
i thought cautious911 did a few on 4.3?
[Sprint Samsung Galaxy S 4 General] snekiam:
Think I found my problem. I am unable to set my BIP block to 1, nothing changes. Screenshots included.
[Sprint Samsung Galaxy S 4 General] premiumg:
I just wanted to note that I was able to get Metro PCS to work on my Sprint S4. I used the ESN as my IMEI when I called in.
[Sprint Samsung Galaxy S 4 General] nicotheandroidguy:
Cool I hope it works for others I tried my MEID and removed the last digit thanks for the tip.
[Sprint Samsung Galaxy S 4 General] snekiam:
Got it working, was a bad sim card after all.:)
[Sprint Samsung Galaxy S 4 General] en11gma:
first of all i want to say thanks to the OP for making "almost" all the info to domestic unlock our GS4 in one place

first i want to say i have a HUGE piece of info to add that came from us cellular GS3 thread.

make sure you are rooted

download buildprop editor

open it up and hit the edit button (the little pencil at bottom)

scroll to very bottom of list and add this

ril.sales_code=LOL

ro.csc.sales_code=LOL

hit the save button (top right)

exit it out reboot phone

now go look in your mobile settings

it gives the real apn menu and also when you click mobile networks you can select wcdma/gsm prefered (do that)

also underneath that setting pick wcdma/gsm automatic

it will add the tmobile data/voice in your roaming screen instead of just the data like it usually does

with apn settings shortcut my info is all greyed out but i dont think i need it as you can already add new apn with the info i gave above.

im not sure if the required steps in the service menu are required anymore since the wcdma/gsm menu now opens up automatically with info i provided above

happy camping

to the OP please add this info to 1st post
[Sprint Samsung Galaxy S 4 General] rmc16:
nice work
[Sprint Samsung Galaxy S 4 General] rizwan5:
one problem

when i plug the phone into computer nothing happen so i try to do the ##3424# and nothing happen but when i press call to ##3424# it say connection problem or invaild MMI code please help i want to transfer file to my SD card
[Sprint Samsung Galaxy S 4 General] en11gma:
going from MF9 to MDC modem (or the unlock.exe) is making us loose "some" dialer codes

##diag#

##72786#

##msl#

and more.

i think the only one that works is *#0011# (which is important) but i always like to reset the network settings with ##72786#

that should probably be put in the guide as one of the steps before *#0011# so everyone has same settings in their modem

im back on stock mf9 firmware right now wondering if mk2 should be installed.

i seen someone say that the apn settings are working by default in it.

can we change the modem to mdc if we flash stock mk2 firmware?
[Sprint Samsung Galaxy S 4 General] staplestaples:
Stuck at first step, brick my phone? help!

Newbie's 1st try to flash rom.

I stucked at 1st step of reverting rom to a stock MF9 rooted.

No responding for more than 30 minutes... See attached photo. Hope this won't brick my phone.

---------------------------I originally wanted to reply in step 1's thread, but got an error msg "staplestaples, you do not have permission to access this page. This could be due to one of several reasons:"--------------------------

[ROM][ODIN]SPH-L720 MF9 (MF9 Modem/Kernel/Bootloader/ROM - No Data Wipe - Rooted)

http://xdaforums.com/showthread.php?t=2486134

------------------

Edit, I'm running with Spring stock Rom (should be MF9 as I ignored the update to MJA).

Do I need to root my phone before flashing the [ROM][ODIN]SPH-L720 MF9 (MF9 Modem/Kernel/Bootloader/ROM - No Data Wipe - Rooted)?

If I root my phone (still researching how to do that), then it become MF9 rooted, so it makes no sense to flash the above MF9 rooted ROM again. Correct?
[Sprint Samsung Galaxy S 4 General] razielpr:
Will this work on 4.3 if i downgrade the modem to mdc if it is possible???
[Sprint Samsung Galaxy S 4 General] en11gma:
ok i had official stock mf9 installed (no root)

did a ##786# and a ##72786# just to make sure i starting with clean phone.

i then installed mdc modem

i then unlocked it with unlock.exe

i then did the guide from where we goto *#0011#

is there any way we can edit the APN settings from dialer and also disable sprint activation and when i connect to wifi/data i wont get any system update popups (without being root)

i know how with root

also i found out all dialer codes are working perfect.

must get screwed up when flashing philz custom recovery and it fixing root permissions or when i install supersu1.85 from within recovery but it is not from the unlock.exe or from being in *#0011# and setting those settings (i dont believe)

anyhow. long story short

is there anyway to enter AP settings directly in service menu somewhere or an apn menu in the phones dialpad?

phones secret dial codes get messed up most likely from philz custom recovery which is basically cwmr guts or from supersu1.85.zip

there is a step in the guide where you pick the "band selection" you only pick one in that step. the one you put the asterek.by "last" is the one thats picked

are you sure we are supposed to pick wcdma and all?

my network i see without putting any apn settings is for data only

if i put selection on "automatic" i am able to network scan and i see iowa wireless and att

if i pick GSM and ALL i get a signal and i thin data only in roaming but no voice but it shows i have a signal.

something is not right at that step in the guide and definately needs clarification

also the very next step under that step where you pick preference mode change the setting right above this step where you pick band selection.

should steps be reversed or at least revised?
[Sprint Samsung Galaxy S 4 General] en11gma:
when we look in Settings>More Networks>Roaming>Roaming Settings what exactly are we supposed to see as per grey checkmarks and GREEN checkmarks?

when i change it to what you said if i go back into CDMA>Common>Next Page>Next Page>pref

it will show it like #18 or #14

is that what you want?

when i switch that step to WCDMA/GSM ALL i loose all connectivity and have circle and a triangle

i have verified through my ICCID as per the unlock instructions and it shows only when phone is in CDMA/HDR/LTE under CDMA settings i mentioned above

if i switch that setting to anything gsm/wcdma related i loose that in my android settings status
[Sprint Samsung Galaxy S 4 General] en11gma:
still needing lots of help as you can see from the posts above (which i would appreciate if someone could read over it)

ok i did guide exactly as said and am in wcdma only mode but i get a little red x and no bars next to my cellular connections

also in *#0011# the screen that first comes up before you enter "2, back, select and then 1" shows a cellular connection that dont show up when your in cdma mode (i think its for gsm/umts

when i select band "gsm and all" then i get data in there and a cellular signal

when i select band "wcdma and all" then i get no data in there and a red x and no cellular signal

i live a little ways away from town could this be the reason or should i see some data in that *#0011# 1st page you see where you signal if you are in gsm and all?

anyhow

i ordered a tmobile sim online and picked a plan and when it got to my house i activated it online and it gave me phone number and all but i never actually paid to get it all the way activated

what should i be seeing?
[Sprint Samsung Galaxy S 4 General] snekiam:
Anybody on AT&T HSPA+ want to say how fast their speeds have been? I am only getting about 2mbps on average. :(
[Sprint Samsung Galaxy S 4 General] StopTheNSA:
I can confirm this worked using a Tmobile sim in a Sprint GS4. Thanks imbmiller. My HSPA+ speeds seem to be around 1.5mbps. If someone would care to take a look at my thread about flashing Tmobile roms on the Sprint GS4 after unlocking I would appreciate it. Running Sprint roms on the Sprint phone even after unlocking seems to have minor annoyances if you're using a different domestic sim carrier.

https://xdaforums.com/showthread.php?p=49289510
[Sprint Samsung Galaxy S 4 General] imbmiller:
I'M using a 4.4.2 omnirom (little buggy but functional) version matters zero, only baseband.

Bands 4 not supported. If the chip was capable we could start flashing T-Mobile or att lte modem files over but the baseband chip is exclusive to the sph-l720.
[Sprint Samsung Galaxy S 4 General] az.623:
Thanks a lot!

The procedure works straight forward... I didn't have any issues following it.

As for the APN, after unlocking, just upgrade to JB 4.3; it comes with the stock APN settings on the mobile networks and you can add whatever settings for the cellular carrier you're on.

KUDOS! :D
[Sprint Samsung Galaxy S 4 General] nicotheandroidguy:
I'm getting 4mbps average the highest I have gotten is 10. I'm using hyperdrive the one for T-Mobile since it supports devices with unlocked bootloaders the AT&T Roms add the loxi thing so they won't work for the Sprint S4
[Sprint Samsung Galaxy S 4 General] razielpr:
No one anwered my question if im on 4.3 is it possible to downgrade the modem to MDC and do the unlock steps???
[Sprint Samsung Galaxy S 4 General] hotker79:
yes

si es posible yo lo hise en el s4 mio y funciono perfectamente haora brega en claro, att, tmobile, y net10 y corre h+ en todas
[Sprint Samsung Galaxy S 4 General] samson_420:
After a full day's work I got this to work. It works very very well, even better than a tMobile original s4 since it has native tethering & a 919 it is impossible to to enable tethering.

Only issues so far that I have found are the Sprint bloatware crap is still active, but you can manually shut it all down & the VM goes to the Sprint number.

Otherwise solid
[Sprint Samsung Galaxy S 4 General] kingv369:
You rock man!! Thank you! Thank you! Thank you! The Wife's phone is working like it should! It took me a while but its working:laugh::laugh::laugh:
[Sprint Samsung Galaxy S 4 General] Agarest:
I wanted to say great job! I've got this working on 4.2.2 MF9. That said I have a few questions.

Can someone clear something up with me, I've done some reading but it's still not clear to me. I am trying to do this on a Sprint 4.3 Stock OTA'd MK2 phone. My plan is downgrade modems to MJA then to MDC to unlock for the T-Mobile network using the guides found on this forum.

Does this absolutely need to be rooted for this to work? Will rooting my 4.3 phone flip the Knox counter so that I can't downgrade past MJA and get Unlock to work? Or does that not matter since I am downgrading modem only?

If Knox is flipped, does that mean I can't get send in for support and/or upgrade to 4.4 since it may brick. Or is Knox just a security solution for businesses and that shouldn't matter to me since I am a regular end user.

Also Im not sure if you guys did this, but I've never got the option for MMS protocol to show up.
[Sprint Samsung Galaxy S 4 General] KillaHurtz:
Yes you need to be rooted.

Knox is a sandbox environment and will not work ever again once tripped.
[Sprint Samsung Galaxy S 4 General] samson_420:
Not for me, everything is stock. No root

But, the root was removed post being unlocked. I unlocked the phone, it worked but had issues within the ROM. I reverted straight back to stock through ODIN. Straight stock Sprint ROM but fully working on tMobile.
[Sprint Samsung Galaxy S 4 General] jqwest:
invalid tmobile sim

I am rooted on Sacs Custom rom 4.2.2, Baseband mdc

Went through all the steps 5 times, still no signal tmobile

step I cant figure out is [3] SIM CLASS CONTROL = UMTS

I get gsm only and cant change option to UMTS

Any thoughts would be very helpful
[Sprint Samsung Galaxy S 4 General] nemofbaby2010:
You might have to go back to stock
[Sprint Samsung Galaxy S 4 General] Agarest:
Just made the jump and getting great reception unlike before on Sprint. I couldn't receive calls and text out initially but it seems to be working fine now for some reason. I am not sure why but I went into the hidden menu stuff and did everything again to make it work.... probably. Can't say for certain since all the options were the same. The Pref Mode Set keep listing itself as Other

Anyways I can't get any data. I get Error 400 when visiting webpages.
[Sprint Samsung Galaxy S 4 General] e0je:
Try installing hiapn from playstore and you can also disable cdma network selection functionality by editing your build.prop and add these two lines

ril.sales_code=LOL

ro.csc.sales_code=LOL

which will alllow you edit your apns............hope that helps