Slow wifi

[neil_jones33]

My house has

 2 a12s 

2 a8s

And an a13

I've just ungraded my sky broadband.

Each of my Samsung devices is getting 30 download and 30 upload speed

I have an ooold work iPhone that's is currently getting 425 and 65 respectively.

I can replicate this on my dell laptop 

Any suggestions on why this is happening 

[Robin999]

Are your mobile devices using the routers 2.4Ghz band. If so, that band isn't good for heavy traffic.

[neil_jones33]

I'm not sure all I have done is hit connect on each device and entered the password. 2 are working at 15 times the speed

[Robin999]

Try logging in to your routers settings webpage. Check each device and note which band they are connecting to.

[HootleTootle]

Has old, bottom of the range phones, complains about them not being as good as premium phones from other manufacturer.

[neil_jones33]

The iPhone is an old brick iPhone 6

[HootleTootle]

Still a premium phone with top spec at the time, compared to bottom spec Samsung. I dint think any or your Samsung's even have 5GHz WiFi (which is why your speeds suck).