HTC One X AT&T Smartphone Review
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The HTC One X can leverage AT&T's LTE network in the few areas that offer coverage with excellent results. We witnessed download speeds on the 33Mb/s range with uploads hovering around 13.8Mb/s. AT&T doesn't offer LTE in nearly as many markets as Verizon, but when it works, it works very well. When not in an LTE coverage area, the HTC One X's support for AT&T's pseudo-4G HSPA+ network also resulted in very good relative performance.
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In the Rightware Browsermark benchmark, which evaluates the web browsing / browser performance of a device, the HTC One X offered the best score we have seen from a stock device. Web browsing on this phone is excellent.