Samsung A12 has limited connectivity

[BobLewis58]

Samsung A12 has limited connectivity, why and how do i fix it?

[jpeg1]

It would be helpful if you could tell us 

1. What are you trying to do - texts, emails, watch video ? 

2,  What is limited - WiFi connection, speeds, intermittent? 

[BobLewis58]

Hi, 

Sorry should have given more info.

just installed virgin fibre broadband, all other devices on Wi-Fi speed test at around 384mbs download. speed test on Samsung gives 20.8mbs.

virgin media connect app says speed is “fast” and “limited connectivity”

Thanks

[jpeg1 · Accepted solution]

That sounds very like the phone is staying on the 2.5GHz band instead of the 5GHz band that allows more bandwidth. Try turning off your phone completely, then turning it on again very close to the Hub. What speed do you get then?

[Client62]

The Samsung A12 has WiFi on the 2.4Ghz b/g/n band.

With a strong signal 50Mb/s should be possible.

[jpeg1]

Does it not have 5GHz? Must be an old device. 

[newapollo]

The A12 doesn't have 5GHz. Info below from /gsmarena 

NETWORK

Technology	GSM / HSPA / LTE
2G bands	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM only)
3G bands	HSDPA 850 / 900 / 2100
4G bands	1, 3, 5, 7, 8, 20, 28, 38, 40, 41
Speed	HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps

EDIT:-

Just found the following table for O2 Coverage Type Supported Bands & Frequencies

5G Coverage	5G NR Band n78 (3500MHz)
4G Coverage	LTE Band 20 (800MHz) LTE Band 1 (2100MHz) LTE Band 3 (1800MHz) LTE Band 8 (900MHz) LTE Band 40 (2300MHz)
3G Coverage	2100MHz 900MHz
2G Coverage	900MHz

[jpeg1]

Those are the mobile network frequencies. WiFi bands are not mentioned. 

[newapollo]

Apologies for only posting the mobile bands.

Again from the gsm link, the broadband capabilities are

WLAN	Wi-Fi 802.11 b/g/n, Wi-Fi Direct

So the A12 only supports the 2.4GHz bandwidth

[jpeg1]

It's an on-going source of confusion.   5G mobile <> 5GHz WiFi