It can use in some Android OS smart tv like Samsung and LG smart tv.
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One code only can be used in one device.
1.Please make sure you install the correct version according to your device. 2.Please chceck you device setting allow the apk or not.
1.Maybe your box memory dose not enough, please clean cache. 2.Maybe the app version dose not match the code.
After you login, please check it in MY ACCOUNT-My Orders-View Order-SKU / IPTV CODE