Database Develop

How to disable HDSPA.

Anyonw knows how to disable HDSPA and let just 3G? I used to have a Samsung Galaxy Ace and u had to dial some *#*#301279# and u entered to this menu and disable it.
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IS there any way to disable HDSPA to get more battery life? D:

BUMP D: !!!

Help plz..........😭😭😭😭

All I need is backup file which is ready in UMTS means 3G......because I try to unlock it but shows me GSM on signal network which is very low........Help plz .......as it shown here.... ... .
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VoLTE and Wifi Calling for Duo sim N9200?

Is it possible to add VoLTE and Wifi Calling to N9200? Or at least Volte?
I know it's available on some of the US versions, can somebody add the features to n9200?
see below for details
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anyone help?

same here :crying:

Found new network menu when I plugged in my SIM card (Tencent version)

Just got the phone I found this menu in the network settings I can Add/Delete/Insert numbers
Could anyone explain what it is?
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Question Hotspot crash

I have a problem when i try to create a local hotspot to share my internet connection to other devices. The moment I click on the hotspot icon from the top pannel, my phone restarts, I have the same result when I activate it from the settings.
I'm wondering if I'm the only one who get this or it's a bug which will be fixed soon.
My phone's version below.
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