I have only one telephone number and DTAC only. I used this sim for three years.
I cannot use a lot of sim card or telephone number because of:
1. My telephone can use only one sim card.
2. I have only one mobile phone.
3. I do not have much money to pay for a lot of sim card.
4. I can not remember my telephone number over ten number.
5. Athough I will have one telephone number, there are not people will call me.
Therefore, I still use only 087-4917618 number. If I change, show it lose.
My telephone number will used when there are the business (with other sim card).
My friend pretty sad that I do not use the same network with them.
Like I say, it must take a lot of time to remember my number.
Piyaman Sukkaew 529