No service is no good! What zipcode in Houston? Is the issue with both voice and data? What device do you have?
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Same for me. For about 10 days now I have not been able to access 4G in downtown Houston (77002), or from home(77450). To clarify, I have 1 bar LTE, but nothing works. Texts take minutes to go through and I am unable to search the web or use apps. Same location for years, problem just started about 10 days ago.