Solutions to the problems of miui12.5 red rice k20pro using Au or povo2

Let your Xiaomi mobile phone be used in Japan | Leo's notepad

1.miui12.5 Yes bug Connected to the 4g Then connect wifi Disconnect for a while wifi 4g It doesn't work directly  

The solution is to switch back miui12

2. Can't find it 4g No signal

1》 Call *#*#86583#*#* To turn off your cell phone VoLTE Device detection function .  Then it can appear volt HD call options This is the key If you don't open it, you can't find it au The signal

2》apn add to ims

1. add to VoLTE Of APN

• NAME: ims
• APN: ims
• MCC: 440
• MNC: 51
• TYPE: ims

In this step, many friends add ims Of apn Don't show after , It doesn't matter. , Just use it. .

3》apn Add operator apn such as au povo2 Of You can find it on the official website    

Then restart can almost solve the problem

Be careful ：

my k20pro Exclusive edition passed qxdm see lte bc The value is 0 I don't know what it means ,

however qtool see lte bc When I found that all frequency bands are true That is, openness is not disabled So it should be that the whole frequency band is not shielded       After that, if there is a problem with the quality of online calls, it may be that there is no antenna of the corresponding frequency band

However, it still takes some time to find the signal after starting the machine, and it may also take some time to identify the signal after the flight mode   And HD volte The call option cannot be turned off ！！    

If you really can't recognize it, restart it several times , Or card 1 Change to card 2 try   Actually measured povo2 It seems to be stuck 12 Can be used, but uq Direct card 1 Can't recognize Unknown cause I'll study it later

Tossed for days Don't change expensive softbank and y mobile I think I can use it in the future The standby machine is also enough

I hope the next exam preparation and examination go smoothly ！！！

k2opro Tossing notes