After upgrading Huawei's c8813q system, the backup contact message can't be recovered, which always shows that the recovery failed.

Dear users, hello! I'm glad to answer your questions. Sometimes restoring the factory settings will cause information loss, and backup failure is also very common. I suggest that you back up your mobile phone information and contacts to your computer, so you don't have to worry about losing them. Now Guangdong Telecom Mobile Mall continues to carry out preferential promotions. Offer 1: During the event, Lenovo, Samsung and other models are as low as 5%, and all models are sold at the reserve price before sending the phone bill. Offer 2: during the activity, you can draw foreign currency gift packages through the turntable and distribute them randomly in full, and the gift packages will be distributed with the mobile phone. Offer 3: during the activity, you can exchange gifts worth 1 yuan online in the business hall with the ticket with the purchase invoice of Guangdong. I hope my answer is helpful to you. If you have any questions, please continue to consult us.