Question Speedtest Discrepancies

[IainAF]

I am unsure if there is an easy answer to my question:
I run a speed test (Speedtest for Chrome) on my laptop and achieve 150Mbps. I compare this with two alternative speedtests (one being Ookla) and they all agree. While sitting at my laptop, I run the Ookla Speedtest on my phone and achieve 19Mbps consistently. I then use three alternative speedtests which all achieve around the 150Mbps.
Is there a reason that the Ookla speedtest is unable to perform correctly on my phone?
[Phone : new Samsung A55]
[Laptop: HP Pavillion 15 EH-0019]

 

[bill001g]

Ookla seem to be like many other companies doing everything they can to take data off your devices to sell to data brokers. For quite some time I have also seen ookla not function properly on my phone. Most times it only report download speeds but other times it also has issues with slow downloads.

I have always just wrote it off to there constant nagging to install their app rather than run it in the browser. I would not be surprised if they have intentionally degraded the web version when it run on a phone to try to get you to install their app that has all kinds of demands for access to things.