Starting today, all newspaper and magazine stands in Beijing have temporarily stopped sale of prepaid SIM cards.

今起，北京市报刊亭暂缓各类手机号卡的销售。

youdao

In the meantime I feel it should be possible to use prepaid SIM CARDS — designed primarily for voice as connections — for data.

与此同时，我觉得使用预付费的SIM卡来上网该是可行的，尽管其设计初衷是用于手机通话。

youdao

With Nokia money, users will be able to send money to other mobile users via their phone as well as pay for services, pay utility bills and refill prepaid SIM CARDS.

有了Nokia Money之后，用户将可以通过手机向其他手机用户汇款，并支付服务费用、账单或预付话费。

youdao

Note that in general data is trickier than voice, and many prepaid SIM cards will not work and you may have to make a few setting changes to your phone.

FORBES: Unlocking Your iPhone Could Save You Big, At Home And Overseas UPDATE

Once you unlock your phone you can insert almost any SIM card you want (the iPhone3 and 4 series take a different size SIM so be careful), foreign or domestic, prepaid or not.

FORBES: Unlocking Your iPhone Could Save You Big, At Home And Overseas UPDATE

Much like it did on the Motorola Photon Q, Sprint has elected to keep its carrier-specific branding off of the device (it's doing this so the handset can make its way to the network's prepaid brands with relative ease), but we were disappointed to see that the SIM card is once again embedded and not accessible without taking the entire phone apart.

ENGADGET: LG Optimus G for Sprint hands-on (update: video) Mobile