I have a Samsung Galaxy S3 from Verizon.
It is updated to the latest Software from Verizon.
Settings --> About Phone
Model Number : SCH-I535
Android Version : 4.1.2
Baseband Version : I535VRBMB1
Kernel Version : 3.0.31 -861013 se.infra@SEP-129 #1 SMP PREEMPT Thu Feb 14 15:16:58 KST 2013
Build Number : JZO54K.I535VRBMB1
Hardware Version : I535.10
It is rooted. It has superuser installed.
I checked whether the phone is rooted or not with RootChecker and the App showed me that the phone is rooted.
I bought the Titanium Backup Pro and APN Manager PRO from Android Market.
I made APN Manager PRO a System App by going into the Titanium Backup Pro.
Initially I was unable to enter the APN in Home-->Settings-->More Settings ---> Mobile Networks ---> Access Point Names.
But after making the APN Manager Pro a System App using the Titanium Backup Pro, I was able to enter the APN Settings.
The settings I entered are
Name : Straight Talk
APN : att.mvno
Proxy : Left Blank
Port : Left Blank
User name : Left Blank
Password : Left Blank
Server : Left Blank
MMSC : http://mmsc.cingular.com
MMS proxy : 220.127.116.11
MMS port : 80
MCC : 310
MNC : 410
Authentication type : Left Blank
APN type : default,supl,mms
APN protocol : IPv4
Enable/disable APN : Check Box selected with Green Tick Mark.
Bearer : unspecified
Can Any one tell me, what did I do wrong?
Any help is highly appreciated.