No 5G on Zenfone 9

[Nikifuj908]

Please tell us some basic information before asking for help:
Model Name: Zenfone 9
Firmware Version: 32.2040.2040.28
Rooted or not: not rooted
Frequency of Occurrence: all the time
APP Name & APP Version (If your issue relates to the app):
In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc.
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I am in San Jose on Ultra Mobile, a carrier which uses T-Mobile's 5G infrastructure. Theoretically, I should be able to get a 5G signal, right?
Problem is I can only get 4G. I have already:
checked the coverage map,
restarted the phone,
reinserted the SIM card,
and made sure 5G was on.
None of it worked. Please help.

[Leschek]

slightlyusedpsx

Found out 5G was disabled by default. Toggle is found under "Network & Internet/Internet/SIM 1"

View post

Also be careful with the battery modes.
The 2 lowest modes automatically control the 5G connection, even if you do sth. in the settings of SIM (network & Internet > Internet > sim 1/2> 5G...).
In my case when I want to force 5G then I must choose one of the 2 highest battery modes.

[ASUS_Bot]

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