About Ltops, not phones and I’ve read the other two questions similar to mine. Those are old, and don’t address the issue.
My recent experience with cabled and Wi-Fi is that if I want any of my devices to reach 300 - 600, the card MUST be a 802.11 /a plus/or/not anything else (n,g,b). The /a is the most important to have.
I discovered from a ISP engineer and my Ltops, that n,g,b will only hit a high of 100 - if that, and not more when cabled, and 40 - 50 WiFi for laptops. The /a I’m told, if for 100 - 999.
Cabled: download: 278.2 - - - Upload 15.05 – Bufferbloat 7.2 ms (B)
Wireless: download: 33.4 - - - Upload: 18.19 – Bufferbloat 407 ms (D)
I know. If mine is a /bgn, how do I get near 300 cabled! Good question - got a good answer?
But I still would like a /a card. So would PureOS / Librem 15 accept a newer /a/whatever/else card?