# key not working

[Bobbydazzler1]

Hi. Have tried to sign into my NS&I account but unable to because I need to use the # key to enable authorisation & it isn’t being recognised. Advisors at NS&I have informed me this is a common problem on iPhones & the cause is the “DTMS files”? on the network. Have now been locked out of my account - very annoyed!! Can you enlighten me? Thankyou

[MI5]

@Bobbydazzler1 

Dual tone multi frequency (DTMF) is a technology used with touch tone phones, best known to users as the sound made when pressing a number key. It signals the phone company that you want to make a call and sends a command to the switch.

If not working it's gonna be a phone fault.

Try rebooting phone, clearing cache from the dialer app or call from a landline.

[Enlli]

#Key working on my O2 Android. Can't see it being an O2 problem with the network

[MI5]

It's not

[Enlli]

---

@MI5 wrote:

It's not

---

Could be an hidden iPhone 'feature' 😉

[MI5]

Never had a problem on mine.