The newly bought lumia 1520 can't send short messages.

Hi! If Lumia 1520, which is listed in Chinese mainland, can't send short messages, you can enter the message-three points "………"-Settings-Information Center Number-check whether the information center number is correct (provided by the network operator) and try to send short messages from different contacts. If it still doesn't come out, please try to replace it with a SIM card.

If you bought Lumia 1520 mobile phone in Hong Kong, you can also consult Nokia's customer service hotline in Hong Kong: 00852-2 1366338.