Use APKPure App
Get Where is my phone? (for wear) old version APK for Android
Open the app on your wear and make your handheld ring and vibrate!
Can't find your phone? Just open Where is my phone on your wear smartwatch and make your handheld ring and vibrate! You'll easily find it!
Do not forget your phone anymore, your wear smartwatch will vibrate when it loses connection with your phone.