Share your experience!
Trying to use Xperia P without SIM card. Every time I turn it on I get the following message:
"Your device will power off automatically after 15 minutes to avoid excess battery drain from accidental start-up during shipment. Please insert a SIM card to stop the auto power-off function of tap Cancel to continue using your device".
I do not want to use SIM card. Is there any way I can delete this message without a SIM card? It's annoying. Thanks in advance.
EasyEd
Try what Mackie mention in this thread, not sure if it'll work. Hope it'll be okay 
http://forum.xda-developers.com/showpost.php?p=43833852&postcount=1712
Tried the suggestion but phone will not allow me to delete that file. Thanks for the suggestion anyway.
EasyEd
You need root access to delete.
What does that mean and how do I get root access?
Rooting your phone is like gettin admin access. You have access to only external apps now, not system apps. By rooting you get access to root folder where all the system files are stored.
Root - http://forum.xda-developers.com/showthread.php?t=2335992
it's not working