Real or virtual. "Cloud phone" can mean a physical device or a virtual one.
Ask what is actually running your apps.
iPhone or Android. If your team works on iPhones, or the apps you rely on
are better on iOS, virtual Android devices are out.
How it connects. Its own mobile SIM, a shared Wi-Fi network, or a proxy you
have to supply yourself.
Dedicated or pooled. The same device every session, or whichever one is
free. Apps you sign into stay signed in only on a dedicated device.
How you control it. In a browser, in a desktop app, or only through an
API, and whether it also works from your own phone.
Team access. Whether each person can have their own login with access to
specific phones, without anyone sharing a password.
Getting content onto the phones. Whether you can upload videos and schedule
posts, or have to do everything by hand.
When a device drops. Whether it is monitored, how
it recovers, and how fast a person answers when you ask.