I have a monthly mini 4g WiFi contract for use in my static caravan. I use it to connect my fire stick to my smart TV. It connects easily enough but when I go into a channel it is just a black screen with no volume. I have tried this with 2 SIM cards but still no success. Anybody else had this problem? Also when I use it with the PAYG SIM card I originally had in it from Argos, I have no problems at all.
