My vivo v5s automatically switches from silent/vibration to general mode.. And its difficult for me to sit in class worrying about it.. I have to check constantly... Please solve this issue as soon as possible.. And i just bought it in june 2017... Please do take a look at this issue and hopefully i can get the solution... Thank you. And i also want to know the reason why.. I hope this is clear enough Was this information helpful? | 
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