First, this phenomenon may be because the files were not cleaned when the software was uninstalled. It is recommended to scan and clean it with I housekeeper first.
Second, go to file management-mobile phone USB flash drive-Tencent and delete the micro Meg folder.
3. Install WeChat in Mobile Settings-More Settings-Applications-Factory Application Management, and then enter the app store to check the updates.
4. If this phenomenon still occurs, enter "* # * 00 1 # * *" in the dialing interface of the mobile phone to check the NV parameter value. If ISROT is "1", then enter recovery to clear all data and upgrade firmware. If ISROT is "0", set it-more settings-
(Tips: Clearing all data will clear all important data. It is recommended to complete the backup before operation. Enter vivo official website on the computer side-service-mobile phone upgrade -Y series-Y28L-download firmware package for resource download)