China uses the GSM standard for mobile phone communications. You can purchase
a Chinese SIM card from one of the two main suppliers: China
Mobile and China Unicom. If your current mobile
phone is not compatible with the Chinese network, you can acquire a Chinese
mobile phone relatively cheaply from one of these suppliers, from electrical
shops, or by hunting for a bargain at one of the many mobile phone markets around
the city.
China Mobile
offer a pre-paid SIM card for $28, which you can recharge at shops throughout
the country by purchasing recharge vouchers. They offer the option to set up
your balance checking and recharge prompts in English, and have English speaking
customer service staff.
China
Unicom offer 'ru yi tong', a pre-paid, rechargeable SIM card.
Both of these services have the advantage of not requiring credit checks or
monthly payments. The recharge vouchers, used to add credit to your account,
are widely available in electronics shops and in news kiosks.