u/_mpn_

My mom has an iPhone 16 Pro Max and she often complains about slow Wi-Fi on her iPhone. I tried the following:

• Disable Apple Private Relay
• Try both Ubiquiti UniFi U7 Pro and HPE Instant On AP25

Interestingly, it doesn't happen on my MacBook Pro M5 Pro or iPhone 16e, or non-Apple devices like my Google Pixel 10 Pro or Fedora HP EliteBook.

I use a MikroTik wired router (CCR2116-12G-4S+) and switch (CRS317-1G-16S+RM), and UniFi PoE switches (Switch Flex 2.5G PoE). My internet goes via a L2TP tunnel via T-Mobile/Calyx 5G to a BGP VPS. My 5G modem is a MikroTik Chateau 5G R16. When I had Spectrum for four months the same issue occurred so I went back to Calyx.

Is there a way to fix the slow Wi-Fi on an iPhone 16 Pro Max? Should I run a separate AP for her, say a Netgear router? Is there a problem with my MikroTik or L2TP setup since my max MTU is lower than most people's.

If you use HPE Instant On switches, one problem is they don't measure IPv6 traffic. I mean they forward it fine, but Instant On only measures IPv4 traffic.

For instance, my UniFi switch showed 20GB of usage while my Instant On APs barely cracked 1GB.

My home network has been dual stack since 2018. It isn't always native, now it's a L2TP VPN to a BGP VPS, but it's still IPv6. I do get native IPv6 now but want a static prefix so I use a VPN.

If most of my traffic is IPv6, it shows how far Big Tech despite their problems has gone. Heck, CGNAT "works" if you're not hosting because of IPv6 traffic. I don't condone Chinese censorship, but China mandating IPv6 is one of their internet policy wins.

Why not all UnIFi? I use UniFi switches for 2.5G PoE, but Instant On APs because my mom complained about "slow wi-fi" when I used UniFi APs. It's not a UniFi problem but a problem with the UniFi model I had (U7 Pro), alongside an eBay seller selling HPE AP25s for $51/pop.