Redmi Note 3 Pro Sim problems

[Twotems]

Received my phone yesterday and everything worked well. Sim 1 (local) registered automatically but sim 2 (3 Mobile UK roaming) had to be registered manually. Woke up this morning and switched off wifi but mobile data wouldn't switch on at all. Rebooted the phone and now none of the sims will register on any network either manually or automatically. This sucks big time.

I've gone to the MI forum and see others with this problem but no overall solution. I'd registered an MI account so my sim is activated in their system and had no issues until this morning. Any help will be much appreciated.

[Bacon_Puffs]

Was data working yesterday? Have you put the global ROM? Shouldn't make a difference with networks, but might be worth a try.

[Twotems]

Was data working yesterday? Have you put the global ROM? Shouldn't make a difference with networks, but might be worth a try.

Solved. After another search I found two solutions but I'm not sure which one worked or it was a combination of the two. Signed out of my MI account and switched off VoLTE. It was after switching off VoLTE that it worked and both sims registered automatically and instantaneously. I'll post my solution on the MI forum.

[Bacon_Puffs]

Why not post it in the Xiaomi forum here? :/ That MI forum is a waste of time and space.

Mi account has nothing to do with SIM, so it was likely the VoLTE switch.

[Twotems]

Why not post it in the Xiaomi forum here? :/ That MI forum is a waste of time and space.

Mi account has nothing to do with SIM, so it was likely the VoLTE switch.

Well I got the solution from a post on there so it must have it's uses.

[Bacon_Puffs]

Ah, okay. Thought you figured it out yourself. Misread your post.

[Twotems]

Ah, okay. Thought you figured it out yourself. Misread your post.

Forget my previous posts on this issue. Follow these steps as they worked perfectly for me and I had to repeat them this evening since I did a reboot.

1. Keep sim registration on automatic on both sims.
2. Power off phone.
3. Remove sim 1 and keep sim 2 (my sim 2 is 3 Mobile UK roaming. That may make a difference).
4. Power on phone. My roaming sim 2 registers immediately.
5. Power off phone.
6. Insert sim 1 (primary or local sim).
7. Power on and you should have both sims working perfectly.
8. Go to sim settings and change your preferred calls and data back to sim 1 if you need to.

These steps have worked for me twice so far. Hope it helps.

[ItHurtz]

This is very strange. You mean when you turn off and turn on it needs to be done every time? Which ROM are you on?

[Twotems]

This is very strange. You mean when you turn off and turn on it needs to be done every time? Which ROM are you on?

So far that's what's worked for me. I'm on 7.1.9.9 miui7.

[ItHurtz]

That sounds like one of the "special" modified ROM. The latest official Global is 7.1.8.0 and latest CN 7.2.2.0.

I would try to flash the official Global. It probably won't work through recovery. Will probably need to flash through download mode. Not a big deal. You can try through recovery first, or save some time and just do it through download mode.