No contracts, 3 unlimited lines, 2 limited lines. I've been reading the forum posts...lot's of them...but am still not sure on this situation. All my chats and phone conversations with Verizon over the past week have ended up with the rep saying you cannot use the sim card in the MiFi because it will not fit, not that it will not work or result in plan changes. I've tested the phone's sim card successfully in the MiFi. The performance increased from ~1 Mbps download to upwards of 14 Mbps allowing me to stream HD videos from youtube without buffering. So, my question is if there really is an FCC ruling that allows...or prevents...moving sim cards from phones to Mifi's, and if I can use my Galaxy Nexus' 4G sim card in my MiFi without violating Verizon's terms and losing my unlimited data? Thanks much!