in Singapore...no SIM lock on phones, due to trade treaty...all
phones can be used by all telcos...
the problem is not with the Singtel/M1/Starbucks....there's no
compatibility issue, its that you must understand what's a
Blackberry.
To make full use of it...to receive push-mail, use the PIN
messaging between blackberry users, etc, u must be logged on to the
telcos' blackberry server.
To do that, you must sign up for a Blackberry data plan....now
quite affordable already. used to be S$60/mth....now i think from
$12 - 35 a month can get....