Zenfone 8 - Dual band issues after update the last firmware

[hi_1990]

hello all. I have a problem, my phone (Asus zenfone 😎 cannot detect any 5ghz wifi band. And i try install any 3rd apps to detect any 5g wifi router on my place, but still cannot find any.
so for the imply, i cannot use dual-band because it only detects 2.4 GHz wifi. Cannot find any band on 5ghz.
if there is any kind that has the same problem as me?
how is the solution?

[Irene2_ASUS]

Hi @hi_1990
Kindly provide the information below so that we can assist you better;
1. Your current firmware version
Settings>System>About Phone>Software information
2. Your current router model name
3. Can your phone detect 5 ghz wifi in other area now?
4. If you put your phone and other devices in the same room of the router, can other device detect 5 ghz wifi yet can't your device?
5. Please try reset Network: Settings>System>Reset options>Reset Wi-Fi, mobile & Bluetooth
6. Please try turn off the router and reconnect the signal.