Please delete the QuestGo in your phone and install the 1.0.0 from googe play store. If the 1.0.0 still not work, please go to our website and download the 2.1.1 version Please let us know the results.

Only good on dry sand. On wet sand or in salt water, it will give false signal or over load.

Nice finding！We also do not have a clue for its price. You may put it on some antique website to collect more information.

Sorry that the forum provided you with a bad experience. From now on, we will pay more attention to its maintenance You may also join to our official facebook to share your detecting experience. https://www.facebook.com/questmetaldetectors/?ref=page_internal

if you are using the retune function when locating the target, you can put the detector away from the metal and press the power button once, the sensitivity will resume back to normal.

To return to factory default setting, you may press and hold the power button for 5 seconds when power on. All the icons on the screen will off and on again that means the detector is reset.

You may reconnect the App with an android system to reupdate. If you still have the problem, pls contact the seller for aftersale service.

Hi Edwin, You may update the QuestGo to the lastest edtion and upgrade the firmware for Q30 now.