Motorola says it has not encountered any more problems with its new V60 and V66 text-messaging system after a software bug resulted in the handsets being banned from sale in Yinchuan, the capital of northwest China's Ningxia Hui Autonomous Region. Sales were suspended on December 5 after several local consumers said their phones displayed the wrong month in the date of text messages they received. Motorola said short messages received by V60/V66 users in December carried the correct year, day and time, but incorrectly displayed the month as November. The Yinchuan bureau for industry and commerce ordered a temporary suspension of sales, pending further investigation, and notified the company of the consumers' complaints, according to reports in the China Daily. Yinchuan appears to be the only place on the mainland where sales of the handsets were suspended. Motorola apologised for the problem, saying that only phones manufactured before mid-December appeared to be affected. The sales ban was lifted on December 8 after Motorola offered a free software upgrade to resolve the problem. China Daily reported that the Yinchuan incident took place following the introduction in November of a new bill of rights for mobile-phone purchasers on the mainland.