Depends what you mean by saying "T Flash Sim Card".
There are 2 slots for Sim Card which means you can have 2 phone numbers at the same time. When you dial a number , phone gives you an option to chose with which number you want to make a call(Sim1 or Sim2).
KA08 also has one slot for T-Flash(or MicroSD) next to Sim card slots,usually under battery.I believe that KA08 supports UP TO 8GB T-Flash...don't buy something bigger than that.
so.......
It is not required to have 2 Sim cards...one will work fine.
It is not required to have T-Flash...phone has built in memory which is enough to save phone numbers on address list,few games and ring-tones .
It is not clear exactly how big is built in memory but you can buy T-Flash cards for pretty good prices like $11 for 4GB card+usb reader.
Good luck.
At&t and T-modile
I have had the ka80 and it dose not have a very good battery life and doesn't last very long brakes very easy and switches off quite alot but other wise a very good phone and fits in pocket very easy as well.
=Okay, so i just brought this new Mini Cell Phone Quad Band Touch Screen KA08 for AT&T. in the booklet that comes with the phone, it tells me that in order to use handwriting for a text message, i have to press a certain icon. but i cant see the little icon! maybe its just me. lol. please respond back if you have the same phone. or if you know how to handwrite a message. thanks sooo much guys!==-Tiffany=