Most player apps load channels from an M3U playlist file, a plain text list of stream links plus labels, or from login credentials that generate that list automatically from the provider's server. The file or login doesn't contain the video itself, only pointers to where the server is currently serving each channel. That's why a list can look identical on two different days while the streams behind it change, get added, or get dropped, and why re-downloading or re-entering the same list can suddenly show different results than it did the day before.

Different player apps use different underlying playback engines, so a specific stream format or manifest detail that fails in one app can work fine in another, with nothing changing on the provider's side at all. This isn't a quality judgment about either app; it's a technical capability difference. If a channel won't play, trying the same list in a second player app is a legitimate troubleshooting step before assuming the channel itself is down, and it often resolves the issue faster than restarting the router or the device, since neither of those touches the actual cause.

Not necessarily, and past a point it can work against you. Player apps hold the full visible list in memory, and performance can degrade once a list grows past roughly 18,000 visible channels, showing up as slower scrolling or app instability rather than playback problems. Hiding channel groups you don't watch trims what the app has to hold in memory and is a genuine fix, not just tidying up, and it's often the single most effective change you can make on an older or lower-powered device without touching any network setting.

Most services activate in about 5 minutes: install a player app, then either paste in an M3U link or enter login credentials so the app pulls the list automatically. Installs are unlimited across devices, so setting up a second TV or phone doesn't cost anything extra as long as you stay within your plan's simultaneous connection limit. Save the login details somewhere you can find them, since re-entering them is the most common setup snag, especially on devices with an on-screen keyboard that makes typing long strings slow and error-prone.