Hongmeng version 4.0 is the latest mobile phone system launched. Since it is new, many loopholes have been found during use. So if you want to return to the original version, the tutorial provided by the editor has a method. You may wish to learn it. .
1. Select to open " My Huawei ".
2. After opening, click " Upgrade and try it out ".
3. Select " HarmonyOS3 " here.
