Tutorial: How To Get GSM DATA working on Sprint Samsung Galaxy S4 SPH-L720 / Switching between CDMA / GSM in 1sec without REBOOT

[Vinod Nayak 443]

Requirements

Root Access

APN names of your GSM provider

After you unlock the phone follow the steps mentioned below

1 Use root explorer or any other file explorer and get to system/build.prop

2 Click and hold till you get a popup menu, select open with Text Editor (when you do this superuser

will ask you to grant permissions, click yes, you will get one more popmenu from the phone saying

"the current file system is read only do you want to remount as read-write and continue the operation"

CLICK YES.

3 scroll to the end of build.prop and add to lines mentioned below

ril.sales_code=LOL
ro.csc.sales_code=LOL

4 click the MENU button which is one the left side of PHONE HOME button, choose "Save and Exit"

5 Reboot the phone.

5 goto https://play.google.com/store/apps/details?id=ex.chinyang.android.xshortcut install the xShortcut app

6 run xShorcut app and click on EDIT your SHORTCUT

7 Add the following line in the respective fields

Shortcut Name and Icon:
Put any name you want here. You can also select an icon.

Target Component Package:
com.samsung.syncservice

Target Component Class:
com.samsung.syncservice.dm.hiddenmenu.OMADMHiddenMenu

8 click on OK button, you should have a shortcut on one of your screen like shown below.

9 click on it and run it. it should get you into Samsung DM Services menu

10 select APNs

11 press the MENU button which on the left side of you PHONE HOME button.

12 select + New APN, under NAME type whatever you want(ex Airtel or Idea or whichever you are using)

under APN type the Access Point Name of your provider(ex airtelgprs,com for Airtel, Idea_Karnataka gprs for Idea in my state.

13 click on MENU button which is left side of PHONE HOME button and click save.

Remember not to set anything else. you can add multiple APNS for different service providers.

14 dial ##3282# and enter your MSL and click on EDIT/OTHER/LET APN SETTINGS,

all of your APN names which you have saved SHOULD be therem if its not there redo everything from step 10.

It might just show only one APN name, thats because you have a SIM in the slot, if you have a SIM in the slot,

it will show the APN of that provider only.

15 select which ever APN you want as per your service provider, you are good to go,

16 goto build.prop again and add # in front of the 2 lines you added earlier.

#ril.sales_code=LOL
#ro.csc.sales_code=LOL

17 reboot.

18 change from cdma mode to gsm/utms mode, data should work now.

How to switch between CDMA/GSM mode in a sec without reboot

1 goto https://play.google.com/store/search?q=Telinfo&c=apps and install TELINFO

2 Run TelInfo and select Device Information

3 Scroll down and select "set preferred network type"

4 select CDMA auto (PRL) when you want Reliance, select GSM auto (PRL) when you want GSM.

NO REBOOT required for the SWITCH

Hope this helps all enjoy your phone and please hit THANKS if this helped.

PIC with data working

Edited August 28, 2013 by Vinod Nayak

[garynsa 8]

Awesome.. This is a great deatiled tutorial.

Thank you for all the support as well to help setup the latest baseband...

[javed91214 67]

Thanks a lot Vinod ji

New easy method: Root Required

1)Go to market install BuildProp Editor

2)Once installed find and open Build Prop Editor

3)Hit the Edit button (pl See 1st screenshot)
4)Scroll to the bottom of screen and add the following lines

Code:

ril.sales_code=LOL
ro.csc.sales_code=LOL

5)Hit the save button at the top right hand corner of the screen(looks like a disk) (See 2nd Screenshot)
6)Once this is done saving restart the phone
7)After restarting go to Settings>More Settings>Mobile Networks>Access Point Names>Menu Button>+ New APN
8)Add desired carriers APN info, when finished hit menu button and save

Enjoy DATA

[joshm 818]

Thanks ,

[cdmaguy 0]

i bought a phone from a dealer in my city...its samsung s4 mini L520 with sprint ....its on 4.2.2 android with baseband as L520VPUAMK2(earlier it was on MI3...then i flashed the MK2 stock rom using odin)...i have used the ##786# to reset to factory also.i have made it ruim only using dfs....normal OMH is not working says "invalid sim".....micro REG series is working for voice and sms but NO DATA.....tried doing the MIP tweaking also by writing 1st active profile..still NO DATA....can anyone plz help me.

[drmadhu 87]

@cdmaguy try ruimpref option in dfs

[dr.faramroze 703]

RGERUC000xxx series SIM cards do not support Sprint carrier S4 mini/Mega/Note 3/S5. Any RECRUC05/06 normal or micro SIM will work perfectly. RECRUC06xxx will be best suitable. RGERUC series is only compatible with Sprint S4 L720 on any firmware with MDC modem.

Edited October 10, 2014 by dr.faramroze