Engineer Mode in VIVO Y69 - How to Enter Service Mode

If you want to get the knowledge about hidden info and options available after using secret combination of keys in your VIVO Y69, then we recommend to open the engineer mode, where you will be able to find some operations to perform, firmware to update, or battery temperature check. How to enter Engineer Mode in VIVO Y69? How to open Engineer Mode in VIVO Y69? How to quit Engineer menu in VIVO Y69? How to exit Engineer menu in VIVO Y69? Check out more info about VIVO Y69: https://www.hardreset.info/devices/vivo/vivo-y69/hardreset/first-method/ Follow us on Instagram ► https://www.instagram.com/hardreset.info Like us on Facebook ► https://www.facebook.com/hardresetinfo/ Tweet us on Twitter ► https://twitter.com/HardResetI