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device is turned on, or if Bluetooth of the phone is set up correctly, reopen
the APP and tap Connect/Search again.
Step 4: If connected successfully, the APP interface appears and show the
connection status, and ready for use.
Connect with iPhone
Step 1: Download and install the APP, open it directly and connect as
prompted;
Step 2: If open the APP directly, you will be prompted with “Mobile phone’s
Bluetooth not turned on”, turn Bluetooth on in Settings, or via shortcut; if
Bluetooth is turned on, when you open the APP you will be prompted with
“Device not found, please tap Search”;
Step 3: ID number pops up when you tap Search, e.g. “VTR5102Pro_XX_
XX”, manually select Connect, if there is not ID number for the search,
please select “Re-search device”. After connected successfully, the device is