A device can support 4K output while a specific stream is only available at a lower resolution.
The first question
Ask the seller how HD and 4K streaming works on your device, in your location and within the stated plan. A device can support 4K output while a specific stream is only available at a lower resolution.
Proof to request
Compare the stream label, TV input mode and available bandwidth. Ask for a current source page or written order summary, including the currency and any player activation fee.
The decision
Treating a marketing 8K name as proof every programme is delivered in 8K. If the answer is unclear, use a trial or a shorter period before making a larger commitment.
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.