I have been using AIS one-two-call for many years.
I have had no issues and been happy.
However, i recently bought a smart phone and although i signed up for a service with AIS (25 baht a week for access to net hotspots), i dont always have access to the hotspots. So, i end up using a lot of credit on data when i need to use the net. At times i end up using 100's of baht worth of credit so im wondering if im better off choosing a better (or different) data package.
(As an aside, I dont actually use the phone a lot for regular calling. I use it for sms messages and data.)
Any suggestions please?
I tried looking at the options AIS and other network services provide, but its really overwhelming.
Laymans advice would be greatly appreciated.
Thank you.

What is the exact make and model of your smart phone?

An "unlimited" mobile data plan might be good?

http://www.ais.co.th/3g/th/smartphone-package.aspx?package=Extra-Package#tips

1 GB/399 baht.

Thanks!

I am using a Samsung Note and also have a Galaxy SII

I guess I'd recommend that you turn mobile data off for now: Settings, Wireless & Networks, More, Mobile networks, un-tick Data enabled.

Without subscribing to some sort of mobile data plan you are paying 1.07 baht/min, so this is eroding your balance.

Next visit AIS and request to port out/port in to their new 2100 MHz subsidiary AWN, and get a new SIM (they can map your existing number to this new SIM).

Then add value and subscribe to a monthly, recurring pre-paid mobile data plan. Maybe try a daily plan to verify coverage, performance and functionality?

This recommendation is based on the assumption that you have AIS/2100 MHz 3G coverage in your primary locations.

http://www.thaivisa.com/forum/topic/649816-a-i-s-one-2-call-3g-pre-paid-sim-on-2100-mhz-3g-a-review/