The Asia SIM works on 447 networks in over 181 countries.  It is a voice only, low cost SIM, designed for the Asia Pacific region, African markets and selected countries where Mobile Termination charges are zero.  It works in Europe, US and India, but calls can be expensive because of excessive Mobile Termination Surcharges.
Some of the features now available :-

• Call forwarding
• Voicemail
• Credit recharge by pin from the handset
• Direct Dialling