X10 stuck in Activating Phone.

SOURCE: insert correct sim card

i you should try a software update, you can get this from www.sonyericsson.com/support. hope this helps

SOURCE: problem with inserting sim card from old phone

Hi, also check that you have imported all your contacts onto your sim card. If so... go into the phonebook... press the menu button (button with 4 little squares above it)... go to option saying 'more' and then go to 'import contacts' - gives you the option of either importing from SIM card or MEMORY card! :)) Good luck!!

SOURCE: I bought a new Xperia X10 and i want to copy

Yes indeed you can copy your sim contacts to your X10

Just insert the sim into your x10.
Turn on the handset
Open main menu by tapping bottom of screen. Or touch bottom of screen and drag finger upwards.
Find "phonebook" and tap that.
Now your phone book is open Press the Bottom LEFT button on your handset not the screen the actual button.
A menu will pop-up so tap the "More" option
Then tap "Import Contacts" from this menu
Then tap "Sim Card" from the new pop-up.
The rest should work for you.

I hope this helps and I hope you enjoy your new phone. :)

SOURCE: I am trying to copy my contacts from my Sony

When in the phone book:

Press the menu button (far left) > More > Back up contacts > SIM card

SOURCE: I HAV A SONY XPERIA

you can check it with other sim card ,if it remains the same problem ,it may be locked to particular network wont accept any sim card other than the particular network ,you can unlock it and used to other network,try here http://www.theunlockspot.com/sony-ericsson-xperia-x10-mini/rs10wp9/