Anyone had a probelm with 2nd sim that not detected?

Just put the second sim, but no option in the setting...

After reading the reviews of the recovery tools most are bad or with limited result.

I tested using another phone(RN3) by deleting most photos(after backup) in the Gallery and the use Google Photo app to backup and sync and surprisingly all those I deleted were also backup to the Google cloud. But it works only partially for my RN4.

Would probably try using Recuva but too bad Recuva can't detect the RN4 as an external drive but has to be done in this elaborate manner:

Here’s the algorithm for Android internal storage recovery:

Make a copy of the internal memory partition (as a RAW file),
Convert RAW to VHD format,
Connect the virtual Hard Drive to the filesystem via Disk Management,
Scan virtual hard drive using recovery soft,
Restore files from the copy of internal storage.

https://howtorecover.me/data-recovery-inter...oid-phone-guide

Yes, sometimes not detected but I just need to reboot it again and it detects the 2nd sim. Hope it helps

Looks like most of the recovery software needs the affected RN4 to be rooted for effective recovery of the deleted photos in the Gallery. Pls advise me b4 I proceed with this:
1. Unlocking the RN4 takes how many days and need to request thru Mi account?
2. What is the function of "Mi Unlock Status" in Developer Option?
3. Is Kingroot safe n effective in rooting RN4? According to a youtube video it is simple to use.
4. I manage to list the content of the RN4 using Windows Explorer but when using Recuva it doesnt detect it as a drive but I can transfer the RN4's content to the PC. The RN4 is in USB debugging mode but not rooted yet.

Thanks...
Just seem reboot is not working for me 

got update.
miui and security patch

ya but after update the phone become funny
> Power/lock button not working properly (need to press like 5 times and above to unlock phone)
> Finger print also not working properly (need to scan few times to unlock phone)
> Battery drain super duper fast even when not using Morning 100% afternoon ady 50% (last time 100% with normal use can last 2 - 3 days)
anyone having the same problem?

My power button already rosak. 
Finger print function normal for me. no problem.
Battery drain fast. i agree. 
need monitor more for battery.

ya but after update the phone become funny
> Power/lock button not working properly (need to press like 5 times and above to unlock phone)
> Finger print also not working properly (need to scan few times to unlock phone)
> Battery drain super duper fast even when not using Morning 100% afternoon ady 50% (last time 100% with normal use can last 2 - 3 days)
anyone having the same problem?

my battery doing fine. not that significant.
fingerprint issue i have to enter password like every 3 days to unlock phone and there mention something like i have not using my password for more than 72 hrs.

My Malaysian set RN4x is unable to switch on or boot, only red light keeps blinking during charging. Anyone can help? Google and it seems like a common problem but different way of rectifications. So far tried a few but not working

My Malaysian set RN4x is unable to switch on or boot, only red light keeps blinking during charging. Anyone can help? Google and it seems like a common problem but different way of rectifications. So far tried a few but not working

My Malaysian set RN4x is unable to switch on or boot, only red light keeps blinking during charging. Anyone can help? Google and it seems like a common problem but different way of rectifications. So far tried a few but not working

maybe brick?
how did it happen?

possible battery problem, tried charge longer, or open the back cover connect and disconnect the battery connector.

After trying the different self diagnosis suggested by google, but my 18months old RN4  still cannot be charged or boot. Brought to Xiaomi Authorised service center to diagnose and was told problem with IC board, so not worth repairing n paid rm25 for that. Any more suggestions? My 3year old RN3 still kicking strong.

How much they want to charge for the IC board?

They just mentioned that it is as good as buying a brand new set, n don't want to quote.
Oh they also said it happened probably I overcharged my RN4, is this possible?