Alright, hope this hasn't been asked before. How can you tell which one is connected or not? I obviously know if it says 3G it's 3G and if it says 4G it's 4G. My question is more geared towards Wi-Fi vs 3G/4G. Sometimes my bars are white & sometimes they're blue? Does blue mean connected data wise & white you're not? B/c It still says 3G while my Wi-Fi is on, and sometimes they're both white, and sometimes both blue, and other times one is blue & one is white. Just wondering what it means. Thanks!!!