EE has already dropped IPV4 and other networks will be dropping it soon, so it is quite important to know when RingCentral will be updating it to IPV6 otherwise it will stop working soon. My phone is on EE and I can't use the Ringcentral App anymore or my laptop when connecting to my phone's hotspot working remotely because outdated IPV4 is no longer supported and other internet providers will be doing the same soon.