[Sprint Samsung Galaxy S 4 General] Mangodreads:
Hi everyone, I've tried for months to find a way of getting my sph-720t unlocked for domestic use.

Pokemon came out and I had to get this phone working.

I tried a combination of two guides and got it working, credit goes to

(http://xdaforums.com/showthread.php?t=2530610)

@autoprime and [MENTION=4988907]nicotheandroidguy[/MENTION]

(http://xdaforums.com/galaxy-s4-sprint/general/l720-l720t-gsm-unlock-att-tm-t3189063)

nfsmww ( please donate

paypal: mujtabaalsaegh@gmail.com )

I decided I would try to make it easier and make a guide for you guys that were having the same trouble as me.

This method is for the sprint sph-720T model, this might work on other galaxy s4s, but the links I provided are specific for the 720T model. (so if your trying this on another model, like the 720 - find your own download links, dont use the ones provided

If you are on 4.4.2 or an older version of android - you are good

if you are on a later version - please download the M919 Rom found here and flash it using Odin

1. Make sure your device is rooted. Boot to Recovery - Open Odin and select AP, then flash the autorooter found here.

3. Open Odin, select AP and flash the MK5 modem found here

4 .open super SU and click on disable knox, if it doesnt work the first time, restart the phone - should work as long as your on 4.4.2

5. install this app, run it and click unlock

3) I went to the dialer and typed *#0011# which brought me to the "service mode" Menu.

4) Hit the soft menu key (bottom left of the phone)

Hit back

hit back again

hit key input

enter capital "Q" hit enter

hit key input again and type "0000"

wait 10 seconds, it should bring up the secret menu.

5. Press 2 (CDMA) > Press 1. (COMMON) > NEXT > NEXT > 8 PREF MODE SET > GSM_WCDMA_ONLY

6) Hit the soft menu key and select back until you reach the main menu and select UMTS

then select [1]DEBUG SCREEN > [6]PHONE CONTROL, > [2]FAKE SECURITY CONTROL > set it to ON

7)Press menu and back and select [3] NAS CONTROL. We are going to check a few different settings in this menu so remember how to get here cause I don’t want to repeat myself.

[1] CIPHERING CONTROL = OFF

[2] INTEGRITY CONTROL =ON

[3] SIM CLASS CONTROL = UMTS

[4] REVISION CONTROL = DO NOT TOUCH

[5] RRC(HSPA) CONTROL = DO NOT TOUCH

[6] DUALMODE IMPROVEMENT CONTROL= DO NOT TOUCH

[7] NAS AVOID SECURITY CONTROL= OFF, 0

[8] BIP BLOCK = 1

8) Press menu and back twice then > PHONE CONTROL > Select [7] NETWORK CONTROL > select [1] GFC and make sure that it is set to [1]GSM/(E)GPRS/WCDMA REL8 .

9) Press menu and back and select [2] BAND SELECTION and select WCDMA/GSM ALL for both WCDMA and GSM band preferences. I selected the ALL choice for LTE as well even though I know it isn’t supported for TMOBILE.

10) Under the NETWORK CONTROL menu we just came from select [4] AQUISITION ORDER and change it to [3]UMTS_GSM

11) Press menu and back until you are in the PHONE CONTROL menu and select [5] SIMULATION , press the [2] SW WATCHDOG button 6(six) times and then the [3] HW WATCHDOG 6(six) times. After you hit both of those 6 times, Hold the power down and reboot immediately.

12 ) If you want 4g LTE you must use odin to install TWRP which you can find here

13 ) turn off your phone and boot in to recovery by holding power, volume up and the home button. This is annoying because if you hold it too long it will power off again.

In here you want to click install from zip, select the M919 file. install it and then go to clear cache davik, go to reboot and you are all good!

enjoy. This fix has been brought to you both by imbmiller and nfsmww

I tried both methods but it didnt work until I combined them