Quote:
Originally Posted by acmilan
DTAC 1 year extension SIM few years ago. When not in Thailand and SIM almost expiring...No hassles or have to worry about expiry. 
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Same applies to AIS too, recall I switched plans (didn't pay extension fee, but think rates differ). Just top up credit when due.
But for my separate data iPad micro sim, stil unsure of how to get around the month expiry thing (or volume usage takes care of it?)