I know tethering is hard on the battery, so I'm wondering if I should just leave my iPhone on the charger the entire time I'm tethering? The reason I ask is because I also thought I read that you should let your battery drain before charging it again. If I do this, I might have to charge it over and over throughout the day. (I don't think this is very good for the phone.) I'm not sure what is best for the phone. I came from Android, so I didn't have to worry about this. I could just replace my battery once a year. What are your thoughts on keeping the phone plugged in or not plugged in when tethering? I'll be tethering for around 8 hours each time while I'm at work.