o2 locked vs unlocked difference?

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im on o2 simplicity and thinking of buying streak locked to o2 handset.

is there any disadvantage of still having in locked to o2 in terms of cooking and new roms or anything else.

is the only disadvantage that i wont be able to put another companies sim in?

thanks

Originally Posted by jontdon

im on o2 simplicity and thinking of buying streak locked to o2 handset.

is there any disadvantage of still having in locked to o2 in terms of cooking and new roms or anything else.

is the only disadvantage that i wont be able to put another companies sim in?

thanks

You CAN use any sim you like but you have to buy the rebel sim to unlock it, it costs £10 or around $12-$15

Originally Posted by jontdon

im on o2 simplicity and thinking of buying streak locked to o2 handset.

is there any disadvantage of still having in locked to o2 in terms of cooking and new roms or anything else.

is the only disadvantage that i wont be able to put another companies sim in?

thanks

It shouldn't have any affect at all on cooking new custom ROMs (because O2 haven't used any branded firmwares, thank god) the only downside is you'll be locked to O2 for a year, until they release the unlock codes, or, use a Rebel Sim as kanej suggested