I Have A LG LS775 andriod 6 phone will it work on your system
In short no it will not work
Republic needs to approve of the models it uses and has not approved that model (only LG model approved has been the Nexus 5X)
see the full list of approved here Republic Wireless Phones
Sorry to say, the answer is no. Phones that will work are listed here: Republic Wireless Phones. If interested in any of those phones, please pay close attention to model and where applicable build numbers.