Please tell us some basic information before asking for help: Model Name: ASUS Zenfone 8 flip Rooted or not: Non rooted Frequency of Occurrence: After minor update hi, i had an issue with my phone. bought 1 month ago. my dual stereo not working as usual. only bottom speaker sound. but in terrible way. like cheap speaker. after i restart my phone, earpiece speaker and bottom speaker sound good only few second. and turn silent again . and bottom speaker sound very bad.. what should i do? should i reset factory setting this phone?