3G doesn't work - Xiaomi Redmi Note 3 Questions & Answers

3G never worked on my phone, I can make calls with it but no mobile data. There is a way to fix it or disable it?

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Mi3 WCDMA - 2G data and voice calls working simultaneously?!!

So, I was trying to access data while on a call and I forgot that I was on 2G only network but it was working anyway, so, I didn't pay any attention to what had happened.
Then it hit me. This never happened on any other phone that I have ever used. How can a voice call and 2G data work together?
Is this working for you guys too?
P.S.: So this is called DTM by the way and no other Android phone I know supports it. But those old Nokia S60 devices supported this. Strange!

Is there any way to force 4G and also receive calls and SMS?

Hi!
Just a quick question,
I forced LTE in the service menu but found out that calls and SMS don't get through because they use 3G. The phone switches from 4G to 3g very sensitively, even though a "weak" 4G connection seems to be much faster than a strong 3G.
Is there a way to configure when the phone switches to 3G or is it possible to force 4G but still somehow get calls and messages?
I'm rooted and will try anything
Thanks

No data connection

I can make calls, but I can not use the data connection.
APN is correct.
Sim is working fine in other mobile phones.
No 'fly' or 'energie saving' mode.
What else could cause this trouble with trueSmart+?

S9+ will only make/receive voice calls in duo mode

Just what the title says. My phone tells callers that I'm not accepting calls and when I attempt to make calls it simply refuses to do so or displayed a "call ended" message without ever dialing the other person. Everything else works fine and I can even make voice calls if I use duo mode instead of mobile. I can also receive calls if the caller uses duo mode.
Have been through everything except an actual reset. Unable to do that since the phone was a hand-me-down and I don't know the PIN. I've about reached the point where I do a hard reset manually but I hate to lose my data. Does anyone have anything I could try to either bypass or recover the PIN or something I could use to get mobile mode to work again?
Your sure you have service? If you do, do you have credit? Both of those would prevent you making calls. You can still use Duo if your on WiFi or you have a data only service. If you are showing that your connected to the network and you are certain you have minutes in your plan or credit available then you will need to call your network provider so they can see if there's any network issues preventing your calls. Check the network operators status page to see if there's issues in your area.
@Nofsdad
It appears that when using a Galaxy S9+ with ATT service the phone is unable to do VoLTE
The way that I was able to have internet on the phone and voice calling was to go into the APN and set the Network Mode to 3G/2G (auto connect)
That fixed it for me. Still pissed off that I can't use LTE but oh well it will work until I upgrade the phone.
Pointless2003 said:
@Nofsdad
It appears that when using a Galaxy S9+ with ATT service the phone is unable to do VoLTE
The way that I was able to have internet on the phone and voice calling was to go into the APN and set the Network Mode to 3G/2G (auto connect)
That fixed it for me. Still pissed off that I can't use LTE but oh well it will work until I upgrade the phone.
Click to expand...
Click to collapse
Hello, I have an unlocked s9 that is going through a similar issue in not being able to make or receive calls. Can you let me know how you got the APN settings for 3G/2G? Going to APN settings I only see the nxgenphone setting open and active, which I heard was for LTE.
Also, can you let me know what setting it has to be in the 4636 mobile network settings in order to restore data? Thanks

LTE not dropping to 3g to receive calls

Hello all!
I have a Samsung A01 (SM-a015AZ) unlocked from Cricket, being used in Pakistan. Internet over LTE works perfectly, however the phone does not support VolTE and so it is only possible to send sms or call over 2g/3g. There's no problem when making a call as the phone automatically drops from LTE to 3g, however that does not happen when someone else tries to call me. The phone does not drop from LTE, nor do I even get any missed calls/sms notifications, but to the person calling me it seems like my phone is unreachable.
There are 3 options present in the preferred network mode (LTE, 3g, 2g) If I set it to 3g, all calls work fine, but with really really bad internet (EDGE). I have even tried to see if any settings in the advanced network configuration menu (By dialing *#*#4636#*#*) would make a difference, however I've had no luck so far. I would really appreciate it if someone can help me with this.
tl;dr Samsung A01 drops from LTE to 3g to make calls, however does not drop when someone else is calling and so does not receive any calls.

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