Hi, I have a tablet (ECS TA70CA2) running android 4.2.2. It doesn't have any cell service or anything and is wifi only but the battery meter in settings is saying that cell standby is draining 42% of my battery. I've looked around and from what I've found, I should turn on airplane mode and then turn on wifi. However, I can't find airplane mode in my device's settings (I'm pretty sure it's just not there). Does anyone know what I should do?