I know that many people prefer these triple punched sim cards because they allow for easy switching to phones that use different size sim cards. It really is a convenience thing for the customer, as well as for Public Mobile because they only need to carry one type of sim card.
However, there are disadvatages for these multi-sized universal sim cards.
For the OP, he/she finds that since the sim card slot in the phone is slightly damaged, it is more tolerant to how the true micro sim cards are manufacturered (ie. usually larger electrical contact size compared to nano).
Also, I personally find that that the single-sized sim cards are a better fit in many phones.The possible extra possible bumps and ridges along the cutouts can actually cause the sim card to get jammed in the slot. The smaller sizes do also sometimes get loose and fall out of the larger sized cut-out unexpectedly. It can be more of problem especially on phones that use a tray that gets ejected, with such a sim card jamming would mean that you'd likely have to disssemble the phone. I'll admit those situations aren't that common but it does happen. Those types of things are the exact reasont that some phone manufacturers use to warn again using sim card adapters, and some even go as far as saying that if one of these gets stuck in your sim card tray, you warranty is voided.
Using a sim card that is cut only to one size is less problematic. But we'll likely never go back to those days because of the convienience of one-size-fits-all.
but not by much. It will probably be better to buy the new sim cards that PM gives which are a 3-1 SIM. You will get a sim adapter included that way.
