iOS change SMSC programmatically

Question

I\'m writing an app which can test different SMSC (Short Message Service Centers) from an operator. Therefore I need to change the SMSC the iPhone is using for sending SMS.

Answer 1

This solution works on non-jailbroken phones, but it will not get in the app store. It uses private API's and it's very similar your description of Android's sendMessage.

You'll have to link your project the CoreTelephony framework (public now), and create the header described bellow. There's and example included too.

CTMessageCenter.h:

#import <Foundation/Foundation.h>

@interface CTMessageCenter : NSObject
{
}

+ (id)sharedMessageCenter;
- (id)init;
- (id)sendSMS:(id)fp8;
- (id)sendMMSFromData:(id)fp8 messageId:(unsigned int)fp12;
- (id)sendMMS:(id)fp8;
- (id)send:(id)fp8;
- (id)incomingMessageWithId:(unsigned int)fp8 telephonyCenter:(struct __CTTelephonyCenter *)fp12 isDeferred:(BOOL)fp16;
- (int)incomingMessageCount;
- (id)allIncomingMessages;
- (void)acknowledgeIncomingMessageWithId:(unsigned int)fp8;
- (void)acknowledgeOutgoingMessageWithId:(unsigned int)fp8;
- (id)incomingMessageWithId:(unsigned int)fp8;
- (id)deferredMessageWithId:(unsigned int)fp8;
- (id)statusOfOutgoingMessages;
- (id)encodeMessage:(id)fp8;
- (id)decodeMessage:(id)fp8;
- (BOOL)isMmsEnabled;
- (BOOL)isMmsConfigured;
- (BOOL)sendSMSWithText:(id)fp8 serviceCenter:(id)fp12 toAddress:(id)fp16;

@end

Example:

#import "CTMessageCenter.h"

BOOL success = [[CTMessageCenter sharedMessageCenter]  sendSMSWithText:@"test" serviceCenter:serviceCenterNumberAsString toAddress:numberAsString];

Answer 2

You need to use AT Command to update SMSC on the SIM card.

On iOS, you can use Private Framework SKTelephonyController.

AT Command to get current SMSC on the SIM card: AT+CSCA?

Write to SIM card: AT+CSCA = "1xxxxxxxxxx",145