Here are the results:
Note that these tests were done near Philadelphia. Both phones were manually set to the same server. Your location greatly depends on the results you will get.
Also note that the first couple tests that were done on the AT&T phone were done with an HSPA+ signal. Initially the AT&T phone was not getting a 4g LTE signal.
Generally the Verizon phone had faster download speeds while upload speeds were about even.
Here are the averages excluding the first two tests from 8/17:
- Download: 8.644Mbps
- Upload: 3.488Mbps
- Download: 7.265Mbps
- Upload: 3.936Mbps