How do you make a call from your app? [duplicate] - iphone

Question

I need to call programmatically in my app in a button click.
for that i found code like this.
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:#"tel:[phone]"]];
Is it work in iphone sdk 3.0 and iphone 2.0 also
Can any pls help
Thank u in advance.

Answer 1

Keep the phone number in a separate string.
NSString *phoneNumber = #"1-800-555-1212"; // dynamically assigned
NSString *phoneURLString = [NSString stringWithFormat:#"tel:%#", phoneNumber];
NSURL *phoneURL = [NSURL URLWithString:phoneURLString];
[[UIApplication sharedApplication] openURL:phoneURL];

Answer 2

NSLog(#"Phone calling...");
UIDevice *device = [UIDevice currentDevice];
NSString *cellNameStr = [NSString stringWithFormat:#"%#",self.tableCellNames[indexPath.row]];
if ([[device model] isEqualToString:#"iPhone"] ) {
NSString *phoneNumber = [#"tel://" stringByAppendingString:cellNameStr];
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:phoneNumber]];
} else {
UIAlertView *warning =[[UIAlertView alloc] initWithTitle:#"Note" message:#"Your device doesn't support this feature." delegate:nil cancelButtonTitle:#"OK" otherButtonTitles:nil];
[warning show];
}
// VKJ

Answer 3

The following code snippet checks if SIM card is present or not as well if the device is capable of making the call such as non-sim ios devices
#import <CoreTelephony/CTTelephonyNetworkInfo.h>
#import <CoreTelephony/CTCarrier.h>
if ([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:#"tel://"]]) {
// Check if iOS Device supports phone calls
CTTelephonyNetworkInfo *netInfo = [[CTTelephonyNetworkInfo alloc] init];
CTCarrier *carrier = [netInfo subscriberCellularProvider];
NSString *mnc = [carrier mobileNetworkCode];
// User will get an alert error when they will try to make a phone call in airplane mode.
if (([mnc length] == 0)) {
// Device cannot place a call at this time. SIM might be removed.
} else {
// iOS Device is capable for making calls
}
} else {
// iOS Device is not capable for making calls
}
if ( ! [[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:#"sms:"]]) {
// iOS Device is not capable to send SMS messages.
}
Don't forget to add the CoreTelephony framework
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