Is something wrong with iPhone?

I own an iPhone 4s locked to Verizon. I've been trying to unlock it using a GPP and have been taking my sim tray out a lot. Now when i take it out, it doesn't say "sim not inserted" anymore. The message doesn't pop up anymore, did i break something? It still reads my sim card and all but the message just doesn't show.

Yeah it's an iPhone.

I heard unlocking it could damage your iphone. Depending on the serial number. You have to have a estimated or below number so your iphone won't break. I've experience this method before. It worked fine but can damage for the wrong iphone.

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