1. After about 7 years of having it Works everytime with no problems and I'm after going through many phones since thenDon't work in android 8.1.0. In old android version phones - work!The best WIFI wireless sonar fish finder in the world,I love you China.nice an simple tool work's greatWhy was there a fish under my bedI bloody love it!(No respone) please update!!!Does not work on my hyuwei.GoofI had trouble getting it to work at first - it kept hanging when I pressed the Operation mode button.
2. Great to have and easy to use, shows how deep the water is and water temperature plus how deep the fish are, I fish in saltwater with strong currents.
3. Other than that the software is basic, but useful for looking at depth and finding features.
4. The solution was to turn off wireless data before starting the app.