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Samsung galaxy S5- How to enable ussd codes

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By CodyLarry, Junior Member on 18th August 2014, 01:11 AM
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Sm-g900f in Oklahoma with At&t as carrier

Would like to change my data from H to 4G or LTE. Seems I need my USSD codes running to change the band.

Also have been experiencing issues with my keyboard not responding correctly
and games crashing.

Aux port pauses when I turn my music up loud as well.

So how would I go about fixing these issues and making my S5vnore suitable for the US?

Thank you in advance

18th August 2014, 07:01 AM |#2  
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Dialer codes aka USSD, secret, factory or service mode codes are embedded into the Samsung i.e. Touchwiz firmware. The codes that are possible vary from one firmware release to another.

It's highly unlikely that your dialer codes are disabled on a 900F model like Verizon does for some of their handsets. You can confirm this on a rooted phone by looking for the following setting in build.prop


There are innumerable threads listing the dialer codes and you can find out which ones work on your phone by trying them. Be warned that a few codes perform functions such as factory resets, so it would be prudent to know what the code ostensibly does before employing it.

You can also look at my post here which explains that more codes are accessible if entered on the CLI than through the dialer. e.g.

am broadcast -a android.provider.Telephony.SECRET_CODE -d android_secret_code://27663368378

rather than *#27663368378#

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