Support Anyone else in the San Fernando Valley/Los Angeles having problems with 4G

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http://androidforums.com – My 4G connection seems to work randomly. I have it disabled for the most part. When I enable it, the 4G icon pops up, but I can't load any websites or use anything that requires data transfer. Sometimes it will work no problem, but other times it doesn't. Can something in my house cause some kind of interference? My other question is can I not send pictures via txt with 4g/wifi disabled? (General)