I recently replaced the Verizon router with my own Modem ( ARRIS SURFboard Docsis 3.1 Gigabit Speed Cable Modem and Router (Tenda AC15 AC1900 Wireless Wi-Fi Gigabit Smart Router). The previous Verizon FIOS modem has both an ONT and MoCA. I followed the steps in the forum post https://forums.verizon.com/t5/Fios-Internet/Using-your-own-router-with-Verizon-FiOS/td-p/851632. I released the DHCP Lease, and connect my own modem and router, and the internet worked fine. I was able to connect all of my devices. However, by Day 3, mobile phone devices and tablets would no longer connect. However, my Smart TV and Amazon Fire would still remain connected and continued to work. By day 5, all devices stopped connecting. I eventually had to reconnect the old Verizon router. The only step I failed to do was to call a Verizon rep to switch my FiOS Internet connection switched from MoCA to Ethernet at the ONT because I have both ONT and MoCA. I’m not sure if that caused the issue because the Internet service worked for a short time period. Any help would be appreciated in correcting this problem. I am definitely tired of renting a router, when I have my own.