Just let you know...iI have been able to receive 4g service in the Encinitas area of SD. Though its not much coverage area i have been connected to 4g while at LA Fitness in Encinitas...and the surrounding area from Sante Fe Rd. to Encinitas Blvd... Not much but it is up and running..
You can sign up for email updates on 4G lte in your are by going to www.sprint.com/lte.
Hope this helps,
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