about this rm25 celcom 3g prepaid card where you get rm20 3g airtime (or one week's worth of unlimited 3g) - does it need to be constantly topped up or can one buy a rm25 card, use for a week then keep for few months until one wants to use it again at which time one tops up rm20 for another week and so on?

Am i correct here or will the card have some validity date when it must be topped up again. i like the idea of paying rm6 for a day or rm20 for a week as and when one wants it.

google the latest firmware for the e220 - that should unlock it.