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You might have hit the nail on he head there.
My cheap Chinese Oukitel C15 Pro has 5GHZ wifi 😀
Cannot see anyway to tell what the network is on the phone?
I just use 2.5GHZ at home and it connects fine there.
Will monitor in other places.
I'm sure I read somewhere that the A12 does not support 5ghz because it does not have dual band WiFi support.
screenshot taken from Samsung website along with link below
Yes, lack of 5GHZ appears to be the cause. ☹️
I created a hotspot on my C15pro and it connected to that fine.
Shame really, as the rest of the phone seems a tidy phone.
At least I know it is not faulty. 😄
Thanks to all that posted. 👍