I lost my Android smartphone. Play Store tells me that someone has inserted a SIM card. How can I find out the phone number? I lost my Samsung Galaxy S, which was signed into Google Play.
Now, Play Store has identified that someone has inserted another SIM card with a different service provider.
Is there anyway I can find out the phone number of the inserted SIM?
Sorry to see you losing your phone. Have you seen the question "Can I remotely launch an app on my android phone?" in which @jlehenbauer has answered mentioning an app called AndroidLost.  You can try this if you are sure you have your lost phone still uses your Google Account.