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    Default Xperia Z Unlocked Very Slow/Spotty Data Connection With AT&T (US) SIM

    so i bought an xperia z unlocked phone and popped my at&t sim card into it and updated to 4.4.2 and my internet connection with data is horrible. I was using an HTC one before this but it broke and the internet worked perfect and was fast everywhere i was. this is my first unlocked phone so i dont know if im doing something wrong. I am using the APN for at&t that is supposed to be the most up to date but nothing seems to work. Any help at all would be greatly appreciated because its frustrating to pay $25/month for 2gb of data and only be able to use wifi

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