Different Device- Different Speeds.

[Corvus13]

Evening All, A Samsung S8, S9 and Spouse's Ipad thingy all register full speed(100Mbs) with Virgin(UK) Broadband Wifi. My TabA SM-T550, which is what I actually use in the house averages about 22.
I don't know where to start. One thing I have noticed is the Tab A is lasting about 24 hours between charges. May be coincidence or even made up but.... Any suggestions. Thanks in advance. Tim.

 

[svim]

Just making an assumption but your Tab A is getting to be a pretty dated mobile device and it's WiFi support is too:
https://www.gsmarena.com/samsung_galaxy_s8-8161.php
Its support is up to 802.11n while even your S8, the oldest phone in your list, supports up to 802.11ac, the issue being ac can support a lot more bandwidth than n.
Theoretically 802.11n can be up to as much as 900Mbps vs 802.11ac being up to 1.7Gbps but real-world numbers are much lower:
https://www.centurylink.com/home/help/internet/wireless/which-frequency-should-you-use.html

Not knowing if you're connecting your Tab A to a 2.4GHz band network or a 5GHz band network, nor the distances and coverage range involved, again this is just idle speculation about such a discrepancy.
-- When you're doing your speed tests are all devices connected to the same WiFi network?
-- Are they all located approximately the same distance away from your Virgin modem/router appliance? Distance affects bandwidth speed.
-- Do you use the same speed test app or website on each app? Different apps and sites rely upon different metrics to obtain test results so if you were using different utilities that can skew results. Not significantly of course, a couple or few Mbps units so not by much but it does affect the baseline since there isn't one.
Use the same app or try a site like https://speedof.me in a web browser app.
-- Also, do your speed tests only when you can assume no one else in your household is actively using online access at the same time. Speed tests aren't very accurate or effective if someone in another part of the house is watching high-res Youtube videos.

 

[Corvus13]

Just making an assumption but your Tab A is getting to be a pretty dated mobile device and it's WiFi support is too:
https://www.gsmarena.com/samsung_galaxy_s8-8161.php
Its support is up to 802.11n while even your S8, the oldest phone in your list, supports up to 802.11ac, the issue being ac can support a lot more bandwidth than n.
Theoretically 802.11n can be up to as much as 900Mbps vs 802.11ac being up to 1.7Gbps but real-world numbers are much lower:
https://www.centurylink.com/home/help/internet/wireless/which-frequency-should-you-use.html

Not knowing if you're connecting your Tab A to a 2.4GHz band network or a 5GHz band network, nor the distances and coverage range involved, again this is just idle speculation about such a discrepancy.
-- When you're doing your speed tests are all devices connected to the same WiFi network?
-- Are they all located approximately the same distance away from your Virgin modem/router appliance? Distance affects bandwidth speed.
-- Do you use the same speed test app or website on each app? Different apps and sites rely upon different metrics to obtain test results so if you were using different utilities that can skew results. Not significantly of course, a couple or few Mbps units so not by much but it does affect the baseline since there isn't one.
Use the same app or try a site like https://speedof.me in a web browser app.
-- Also, do your speed tests only when you can assume no one else in your household is actively using online access at the same time. Speed tests aren't very accurate or effective if someone in another part of the house is watching high-res Youtube videos.

Thanks for the reply. Yes the Tab A is a bit old now, I hadn't realised how old it was till you mentioned it. The thing is I've had the full 100Mbs before on this machine so it feels that something has changed. Would the difference in specs you mentioned result in a 75% drop in speed? (100 to 25mps).
Yes, the router is 2 metres away in full view for the tests. I used the Virgin Speed Check/Test which comes up first when searched for.
The 2.4GHz and 5GHz bands are locked together at the router. The problem seems to lie with the Tab A imo. As to what the problem might be is beyond my knowledge envelope. I can't even think what it might be considering the tests I've done.
Logging on to friends wifi would be interesting. If only I had any

 

[Corvus13]

It's looking like the Tab A. Tried another VM 100 at a different house and it's a similar tale. The same S9 and a different Samsung Tablet show full speed whilst the Tab A is 20-30's. Very odd!