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I want to uniquely identify Sim, but if I am using TelephonyManager getLine1Number() it always return null, if I am using TelephonyManager getDeviceId() it is returned even without sim. So the question is that how can I uniquely identify SIM?

Raees Khan
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  • Possible duplicate of [getLine1Number() Returns blank, not null](http://stackoverflow.com/questions/21497766/getline1number-returns-blank-not-null) – Jack Wilsdon Feb 04 '17 at 23:20
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    The device ID for a GSM phone identifies the phone. AFAIK, `getSubscriberId()`, which returns the IMSI, identifies the subscriber. – CommonsWare Feb 04 '17 at 23:21

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