shawnybear: [snip] both phones being Android and doing cloud backups. still have no clue as to what could be saturating the upstream to cause my whole internet to just stop working for upto 5 minutes
There's the clue right there. A phone doing a cloud backup for several minutes will cause the exact symptoms you have with a 1 Mb/s connection.
Yup. And is the factor the OP got a new phone or did a firmware upgrade.
Same applies to cloud backup on desktops.
If I had to blame it on something it would be cloud backups.
Edit #2: Looked into samsung cloud. turns out maybe i accidentally clicked back up photos & videos to cloud. maybe samsung just auto enabled it, im not sure. ive never been asked before on my note 9 about it. and with photos being upto 5MB and videos being upto 1GB i can see now why it has saturated my connection. this is pretty much just something to laugh about now. cant bloody win with new tech these days.
BarTender: So I had the same problem a while ago. Either power your phone off / turn off WiFi and use mobile data when you're home.
Then enable WiFi when you go to bed and hopefully it kicks off cloud backup while you're sleeping.
Another option would be to go into your device settings and set your Wifi as a metered network. From there it'll pretty much use the same behaviours for WiFi as it would for 4G in terms of data preservation, while still preferring your home WiFi to mobile network.
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