How do I reboot my Windows Phone to restore my invalid SIM?

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Re: how do i reboot my windows phone to restore my invalid SIM

The power button!

If that doesn't respond try a soft reset, power+ Volume down.
 
Re: how do i reboot my windows phone to restore my invalid SIM

Do a soft reset power + Volume down button. Normally if the SIM becomes unresponsive simply turning off and on the phone works.
 
Re: how do i reboot my windows phone to restore my invalid SIM

Do a soft reset power + Volume down button. Normally if the SIM becomes unresponsive simply turning off and on the phone works.

I would add that you should hold down the power + Volume down button for at least 8 seconds or until you feel the second vibration. The first vibration happens almost immediately so wait for the second one. Hope these suggestions halp.