Here is my story. Up until mid Dec. I was on Revol Wireless (Unlimited Everything 3g less than $50./mo) They even included "Smart Phone Hot Spot" up to 5 deccies, in that package. Unlimited Roaming included Data again for $47.55/mo As luck would have it, they went out of business Dec 16th and directed me to Boost Mobile. So I got the Force 4g but they did NOT allow 'Smart Phone Hot Spot" and 2.5g 4g limit then throttled to 3g I am using Pdanet to tether to my laptop. (I do a lot of remote computing) I just saw that T-Mobile is offering BYOP and get Free Sim change and they offer a Full unlimited 24/7 4g plan for $70/mo. The person I spoke with at T-mobile said the ZTE-Force has to be "Unlocked" for them to change the SIM (ZTE Force has single 25x15 Sim slot) They said because this phone was contracted to Sprint it was not yet on their list of compatible phones and they did not know if they could do it. Does anyone in here know if the Boost Force can be unlocked??