如何检测 iOS 中的 sim 更改

Question

I'm implementing the currency transfer mobile app and i have to fetch the information about something that is unique on particular iOS device. I HAVE TO DETECT sim change.

I went through many links how to identify ios device uniquely

and

Is it possible to determine if the SIM/Phone number has changed?

but they are of no use, plus it cant be detected if user removes sim when app is not running.

Answer 1

you should sign up for a notification using subscriberCellularProviderDidUpdateNotifier in http://developer.apple.com/library/ios/#documentation/NetworkingInternet/Reference/CTTelephonyNetworkInfo/Reference/Reference.html

also this post contains answer Detect SIM change OR find IMSI of the SIM using official iOS SDK?

Detect SIM card replacement

EDIT : pls go through this link also and take a look at CoreTelephony FrameWork Is it possible to determine if the SIM/Phone number has changed?

Answer 2

You should sign up for a notification using subscriberCellularProviderDidUpdateNotifier in

http://developer.apple.com/library/ios/#documentation/NetworkingInternet/Reference/CTTelephonyNetworkInfo/Reference/Reference.html

you can detect sim changing only while app is running.

For sim change detection while app is not running refer the below link

Detect SIM change OR find IMSI of the SIM using official iOS SDK?

Hope it helps!!