I off mo sir, yong auto-select under carrier sa may settings ng sim card. Pag may nasagap kang DITO TELECOM, or yong carrier number ng Dito 5155... Something ata diko tanda DITO telecome un means may signal na jan ng DITO sa lugar niyo.
You are not guaranteed to enjoy their services yet, hence it is why it's currently only available in two provinces. So I wouldn't recommend purchasing it until it has been proven to work in your area.