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Since my Samsung Duos phone was upgraded to Android 5.0.2, during a call, when I dial some digits on the numeric pad, there is no keypad tone heard. As a consequence, when an answering machine asks my choice like "press one", "press two", I just cannot provide any choice.

I tried pretty much all settings (dialing keypad tone, touch sounds), with no luck, I can't even imagine why disabling this feature.

Any suggestions?

  • Device: Samsung Duos (SM_A300H) Android version 5.0.2. I don't think it comes from the device, I have it for a year and I have always been able to "press one" "press two" on request – Patrick from NDepend team Jan 19 '16 at 16:25
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    #*#0673#*# leads to msg "connection problem or invalid MMI code" there is no menu except the classic 3 vertical points icon below the Contacts icon, with menus "Speed Dial" and "Settings" , that don't offer any untried setting – Patrick from NDepend team Jan 19 '16 at 17:14
  • On my phone I can't hear the keypad tones at my end, but they still get sent to the other end, so automated menus still work. Have you definitely tried using the answering machine? – Dan Hulme Jan 20 '16 at 11:07
  • absolutely, it didn't work yesterday but today it worked??!! I think it is definitely not a good idea to suppress this dial tone for user, thanks for your help – Patrick from NDepend team Jan 20 '16 at 14:11
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It is good to know that the problem has been resolved. After my suggestions including "cheat code" did not fix the problem yesterday, I discussed this with a Samsung ROM developer. You may like to consider options based on this discussion.

Firstly, the tones which failed are DTMF tones. These are NOT

  • User configurable
  • Affected by app misbehaviour
  • Custom ROM developers also do not tinker with this as it is a deep feature and they don't need to tweak it for user benefit
  • Stock ROMs/ upgrades will NOT disable it

As to how this happened is a mystery, but there is always an annoying possibility, that this may occur again. You have three options

  1. Do nothing: If it happens again you can try using these kind of apps (bunch of them on Play Store, Google for "DTMF") DTMF Tone Generator

Any of next two options recommended

  • Device not rooted

    • Take backup using Kies
    • Factory reset
    • Do firmware upgrade/restore using Kies
    • Restore data using Kies

Or see this for other ways of taking back up Full Backup of non-rooted devices

  • Device rooted

    • Take nandroid backup using custom recovery backup
    • Factory reset
    • Flash upgraded Stock ROM

      • Can be downloaded from Sammobile after registration. Make sure you download the correct version and of your region
      • Flash stock using Odin
  • Restore data from nandroid backuo

  • Thanks for this detailed answer, yet please say SAMSUNG dev that removing DTMF tone from caller hears is definitely misleading and not a good idea – Patrick from NDepend team Jan 21 '16 at 5:00
  • Thanks for accepting but to clarify that the person I spoke to is a "Custom ROM developer", not connected with OEM. It may be better to voice your concern by contacting Samsung help directly and mailing them – beeshyams Jan 21 '16 at 5:26

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