Andriod Exploit for Samsung s7 Edge or Motorala E or X Phones

HI all,

How can i get to know which exploit can be used for Specific target device.

i want to know android browser exploit for Lg G3 , Samsung S7 EDGE and Motorola phone .

Since when using exploit/android/browser/stagefrightmp4tx3g_64bit when i open the generated URL from my Lg G3 phone (from chrome ) i got error:

"Unknown user-agent: "Mozilla/5.0 (Linux; Android 5.1.1; Android SDK built for x86_64 Build/LMY48X) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/39.0.0.0 Mobile Safari/537.36"

Not compatible.

many thanks for help .