USSD Codes not working.

[shiv1g]

My phone is not working with the USSD codes ( e.g *111# , *121# ) on both the cellular networks JIO and Vodafone IN. It shows an error of Connection Problem or Invalid MMI code. Last time when i used them about 2 weeks ago they where working perfectly fine.
I tried restarting the phone several times, toggling the airplane mode on and off, etc.



I'm on the latest .73 update.

[_jis_]

Try to disable VoLTE and check again to pinpoint the culprit.

[spmsenthilkumar]

_jis_

Try to disable VoLTE and check again to pinpoint the culprit.

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Dude , come on, get a life... It's a network level code for operator plans and offers. It's nothing to do with 2G or 3G or 4G or VoLTE enabled/disabled.
It not even required internet connection. Just a active network is sufficient.

[_jis_]

I have a reason for that.
https://www.quora.com/Do-LTE-networks-still-use-or-support-USSD
https://forums.oneplus.com/threads/mmi-codes-call-forwarding-not-working-t-mobile-with-6t.1047384/#p...
https://support.t-mobile.com/thread/141709

[spmsenthilkumar]

_jis_

I have a reason for that.

https://www.quora.com/Do-LTE-networks-still-use-or-support-USSD

https://forums.oneplus.com/threads/mmi-codes-call-forwarding-not-working-t-mobile-with-6t.1047384/#p...

https://support.t-mobile.com/thread/141709

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For me it's working. Even for the user raised query also it was worked.
And everything mentioned in internet , especially quora were not true. Please check the date in quora the question was raised and answered.
I guess , it's one of intellectual like you, who assumes know everything and think logically.
Irrespective of pre-paid or post-paid, the code should work and it's work for me and more of others also.

[shiv1g]

@Anders_ASUS please help.