Baibang SMS has been repaired.

Steps to detect refurbished machines: When buying a mobile phone, check whether there are records of games, short messages, phone books, call records, homemade ringtones and other items in the mobile phone. If there is, there is a great suspicion of renovation. In addition, during normal use, the machine frequently shuts down or crashes automatically. It can be said for sure that there is something wrong with the motherboard or software of this mobile phone. As the saying goes, greed is cheap, and big losses. It is recommended to buy a mobile phone in a regular store with good reputation and heavy service. How to tell whether Apple's mobile phone is a refurbished machine: First, it is generally invisible from the appearance; Second, you can only find the serial number from Settings-General-About this machine; 3. Go to Apple official website to check the warranty status: 1, and enter in the browser: /agreementwarrantydynamics.do? 2. Enter the serial number found on the phone and click "Continue". 3. You can find the services supported by your mobile phone.