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I am trying to investigate why our Phones are experiencing slow browsing to HTTPS sites.

It happens only the first time after the phone in question has been locked for a couple of minutes or more. So when browsing to a https site after unlocking it, it takes over 1 minute. Then, suddenly everything works until the next time we lock the phone screen and leave it for a while.

We are on my company wifi, and it is only happening there it seems.

I have tried everything when it comes to the router, and it is not an ISP fault.

Tried to use packetcapture app while connecting to a https site after unlocking phone, seems to be port 443 used by the https websites.

If I open for example BBC.COM (which seems to use a non secure port 80) it works fast and normal.

Any ideas?

BTW: Traceroute and Pinging shows great results to the https sites, and download speeds are great as well. Happens only on browsers (Both chrome and Stock samsung browsers).

Thx

migrated from superuser.com Dec 1 '17 at 15:30

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    Questions about Samsung Android phones are out of scope here at Superuser – Ramhound Dec 1 '17 at 12:44
  • @Ramhound It is not regarding a samsung in particular, it is regarding HTTPS. Any phone will do. – CKA Dec 1 '17 at 12:53
  • Do you have an IDPS or traffic scanning system that scans encrypted traffic? this might be done to combat remote command and data ex-filtration by malware, rogue employees, etc. many such systems Man-in-the-middle the HTTPS negotiation process to replace the cryptographic attributes with the scanners, making the traffic visible. Most such devices will block a connection until it has time to re-negotiate the encrypted session, so if the device is lacking capacity to meet demand, that would slow HTTPS traffic exclusively, and affect all users on the wifi. – Frank Thomas Dec 1 '17 at 13:43
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You may need to update your device. If you have already updated your device, you may have downloaded a bad update. Unfortunately, this happened to me too. After i downloaded my update, my phone kept on freezing on the facebook market place. Sprint suggested that i just bring my device to the store. Hope this was helpful.

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