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It is great that we have a possibility of making calls and texting messages wherever and whenever we want. That is what we call the technology of the 21st century. However, many times you might have had irritating experience of an inability to talk on your cell phone because of poor signal in the so-called "cellular dead zones". What is the way out of the problem and is there any?
I’m very satisfied with AT4000W! It was unbearable when I couldn’t use my mobile phone. That horrible signal drove me up the wall. I live in underground room. The mobile signal was absent because there was not enough coverage.