Further reading: Groupon starts China service and JPMorgan’s Twitter stake

Tech news from around the web:

  • Groupon, owner of the biggest coupon website, has said it has started an online group-buying service in China, Bloomberg reports. The new Gaopeng.com site will initially cover Beijing and Shanghai before expanding to other major Chinese cities.
  • AT&T is embarking on a shopping alert service in the US through a partnership with Placecast, TechCrunch reports. The telecoms company is to launch ShopAlerts, which will deliver special offers and discounts to consumers via their mobile phones when they are near a participating store or brand.
  • France Telecom’s Orange mobile unit is launching a voicemail service for the iPhone in the US, says AllThingsDigital. ON VoiceFeed will let users create custom greetings for individual callers or groups of callers.
  • Mashable reports that Apple is testing a new type of lock screen on the iPhone, similar to the gesture-based lock screen on Android phones. The screen is based on a dot grid with the user having to swipe the dots in a correct sequence to unlock the device.

From the FT: