Using phones in sandbox article references outdated software

[faulky]

https://developers.ringcentral.com/guide/basics/your-rc-phone references the "RC Phone" app, but the instructions do not work for the new Ringcentral App. Furthermore the link to download RC Phone is now broken

[faulky]

Referencing https://support.ringcentral.com/download.html for RC Phone might be better

[CoCraig]

Thanks @faulky. I'll take a look at changing this. We don't use RC Phone app for development anymore. Please use this page to develop your integration in the new RingCentral App: https://developers.ringcentral.com/guide/basics/sandbox

[byrnereese]

Resolved by adding clearer language about our support of RC Phone.