When using Blackberry devices running on CDMA network like Verizon, Sprint, AT&T etc, you will see the message “Activation Required” at
the top of your screen instead of the carriers name of the SIM you
inserted even if you are on a data plan you will still see this message.
This does not affect anything while using the phone but some people
find this message very annoying.
Make sure you have at least 30% battery life
This might not work on Sprint devices
You will need to access CDMA settings menu. To do that,
Type in ##000000 OR ##11111 and press Call button
Inside CDMA menu, insert your number at the Mobile Directory Number Field or simply add 200 infront of the numbers that are already there
Scroll down and SAVE
Phone will reboot an Activation Required” gone