Your SIM must be inserted before you can use your mobile phone.
Remove the back cover
Turn the back of your mobile phone towards you.
Take hold of the top of the back cover and remove it.
Replace the back cover
Place your SIM as illustrated next to the SIM holder.
Slide your SIM into the holder.
Place the back cover on your mobile phone and press it into place.
*Please refer to the Sony website for more information or further support.*