A TV build and a phone build of the same app can behave differently.
Before the test
List the exact model, player build, login format, start time and expected outcome for Android TV IPTV players. A TV build and a phone build of the same app can behave differently.
During the test
Check remote focus, back behaviour and the on-screen keyboard. Note one successful case and one problematic case, including time, channel/category and which connection was used.
After the test
Record the support answer, current price, currency, connection count and any app fee. Installing an unverified APK or the wrong device edition. Save only necessary details and never expose a password in a public checklist.
What to do next
Open the relevant brand page and check the original supplier information before ordering. For a technical issue, write down the device, player, connection and one reproducible example. For a price question, ask for the full charge in the currency you will pay.