Modems & Wi-Fi

[IssaraSarakanee]

hi ... I have a question

I've used ADSL for 2 years until yesterday I just change ADSL to fibre max (700-900m) 

Do I need to upgrade the modem or router to the new one?

because when I used lane cable and connect with a laptop and test the speed it shows me 700/700 that's true

but when I test the wifi speed with another device or mobile the speed down to 100-200 only!!! Shocking!! so different!!

Could you tell me how can I do?

[wsfinest]

Wifi is unable to reach the speeds that you can using a ethernet cable, so changing modem won't help sorry.

[MrMorm]

thats actually ok for wifi - especially for a phone.

Wifi cant go as fast. Most devices will see 100-200Mbit on 5ghz wifi.

Higher end devices (macbook pro, flagship phones etc) may see about 300.

[kamrind]

Hi @IssaraSarakanee

Welcome to the Vodafone Community.

The modem could be part of the issue but you would need to check with your modems user guide and check what technology is supported. 

Wired will always give you the fastest. For older machines they might be limited to approx 100Mbps.

Your modem may have settings for both 2.4GHz and 5GHz (check with the modem model online or via your user manual) each have pro's and con's.

 

Standard	Frequency	Theoretical Speed	Real World Speed
802.11a	5Ghz	6-54 Mbps	3 - 32 Mbps
802.11b	2.4Ghz	11 Mbps	2-3 Mbps
802.11g	2.4Ghz	54 Mbps	10 -29 Mbps
802.11n	2.4Ghz	300 Mpbs	150 Mbps
802.11n	5Ghz	900 Mbps	450Mbps
802.11ac	5Ghz	433 Mbps - 1.7 Gbps	210 Mbps - 1 G

I myself like to name each Wifi Network seperatly (i.e Your WiFi 2.4ghz & Your WiFi 5ghz) so if you see the 5hz option you know that your connected to the fastest available option to you, Some modems do not support this feature.