https://allaboutsymbian.com/support/item/Why_does_my_P910i_keep_changing_its_IMEI_code.php
Why does my P910i keep changing its IMEI code? - Support - All About Symbian
Q. I've been using a P910i for the last three months, but I'm having trouble registering applications. For starters, the IMEI reported by most (but not all)...