GiulioAug 11, 2024
#Apple #IPhone 👍 connects to the hotel #WiFi
but the #Android 👎 phone does not.
Additionally, the Android device becomes noticeably warmer when playing #Instagram videos.
Show threadGiulioAug 15, 2024

I found the answer. My #Android can connect at the reception where at least Wi-Fi 4 (802.11n) is available (according to #WiFiAnalyzer https://vremsoftwaredevelopment.github.io/WiFiAnalyzer/ #kotlin #opensource). However, in the room, there's only a legacy 802.11g (Wi-Fi 3) network, which the #Apple #iPhone can connect to, likely due to better #backward #compatibility.

#network #router
#WiFiTroubleshooting #TechSolutions #AndroidVsApple #WiFiCompatibility #NetworkIssues #TechTips #MobileConnectivity #LegacyWiFi #TechSupport

WiFiAnalyzer

Android application to analyze WiFi signals.

WiFiAnalyzer
Show threadPaul SouthworthAug 16, 2024
@giuliohome Which model of Android phone is it?
Show threadGiulioAug 16, 2024

@pws

miui 12.5.5 Android version 11 Redmi Note 8T

Show threadPaul SouthworthAug 16, 2024
@giuliohome I wonder if there is something weird about that WiFi network, because the specs for that phone say it supports 802.11g. Hotels are a great place to find funky WiFi systems.
Show threadGiulio
@pws Yes, theoretically it should connect, but it seems more like an Android kernel or driver bug (in the area of legacy wifi backward compatibility) since the iPhone does connect.
Edit
However, now the iPhone is also having trouble connecting, so the congestion of the #accesspoint is to blame too.
Meanwhile I've activated #Android #DeveloperOptions for randomized mac and #verbose wifi registration and noticed a #standard=0 which is 802.11 not even g.
But it always connects under the 802.11n.
Aug 16, 2024 at 1:19pmWeb
Show threadGiulioAug 16, 2024
@pws I've reproduced the issue: the iPhone definitely manages the connection to the legacy Wi-Fi access point better. There's something missing in the Android #kernel. I suspect the #pairing request data is not as expected, leading to the #association being #rejected. It's possible that #iOS has a more mature or established history of compatibility implementation for this #protocol.
Show threadGiulioAug 17, 2024

@pws

Errata corrige:

A #Galaxy device with the same #Android version (but a slightly older kernel) connects to the same hotel room's legacy WiFi access point, Therefore, it's a #legacy #WiFi #compatibility issue specific to the #Redmi device, likely at the #hardware or #driver level.

Show threadGiulioAug 17, 2024
@pws From #Android Customer Interface #Testing, it appears the #hotspot supports Extended Service Set (ESS) capability. When moving between APs within the same ESS issues might lead to #connection rejections, particularly when transitioning from an 11n #standard to a legacy standard AP. However, it is definitely a #bug specific to the #Redmi device for the #legacy 802.11 standard. The larger Android #ecosystem presents more challenges for consistent testing compared to #Apple #iOS.