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Nika GudgeFlag for United States of America

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How to find latency issue for iPhone app?

We are having a user in New York who uses the deli app to order food online in New York. For some reason he has issues while loading the restaurants menu. It takes him forever to load the restaurant. Not sure how to proceed with this issue. We are not able to produce the latency issue at our end. Any help will be appreciated.
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Jason C. Levine
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Do you have any other reports of latency problems? Is the user on a modern phone with at least 4G or 4G LTE capabilities?
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the user is using iPhone 6 plus. he is on Verizon LTE network.
i do have his ipv6 address but not sure if this would be of any help.
i did a trace route6 from the application server to his iPhone device below is the trace. looks like it times out.
traceroute6 <ipv6>
traceroute to <ipv6> (<ipv6>), 30 hops max, 80 byte packets
 1  2001:4800:7818:104::a (2001:4800:7818:104::a)  1.714 ms  1.782 ms  1.829 ms
 2  core10-aggr160a-8.dfw2.rackspace.net (2001:4800:800:c10:160a:8::)  1.531 ms core9-aggr160a-8.dfw2.rackspace.net (2001:4800:800:c9:160a:8::)  1.444 ms core10-aggr160a-8.dfw2.rackspace.net (2001:4800:800:c10:160a:8::)  1.447 ms
 3  2001:4800:800:ca:c9:: (2001:4800:800:ca:c9::)  3.314 ms 2001:4800:800:ca:c10:: (2001:4800:800:ca:c10::)  3.290 ms 2001:4800:800:cb:c9:: (2001:4800:800:cb:c9::)  4.085 ms
 4  2001:4800:800:dc1:cb:: (2001:4800:800:dc1:cb::)  4.419 ms 2001:4800:800:dc2:cb:: (2001:4800:800:dc2:cb::)  4.001 ms 2001:4800:800:dc1:cb:: (2001:4800:800:dc1:cb::)  4.344 ms
 5  CORELINK-DA.car2.Chicago2.Level3.net (2001:1900:2100::efa)  5.830 ms  5.601 ms  5.643 ms
 6  * * *
 7  * * *
 8  vl-4060.car2.Miami1.Level3.net (2001:1900:4:1::a5)  37.079 ms  37.187 ms  37.155 ms
 9  vl-51.ear1.Miami2.Level3.net (2001:1900:25:1::e)  37.437 ms  37.103 ms  36.555 ms
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will the speediest app be of any help for this scenario?
i do not have any other reports of latency.
what all test can i ask user to perform on his side that would give us a clue.
Any tests that reports his connection speed and pings/routes to the central server.  I have absolutely nothing to base this on, but I'm going to assume he either has a very old device that is not capable of "modern" speeds on the network or there is a fundamentally flawed network in his area.
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bilalasifkhan

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