In Nokia, I did it by typing *71003584012345678 where 71 for the unanswered calls, 00358 for the Finnish country code and the phonenumber 4012345678. I know there are many applications for the task but I do not want to use them.

I heard that some Nokia Android phones and Sony phones have a builtin feature for the call forwarding in their phones. However, I cannot find such a feature in my Oneplus.

Phone: Oneplus 3T
OS: Android 7.1.1

  • 1
    I believe this isn't an original Android feature. Nokia has put it in its version, but other phones might not have it for you. So, you'd need an app... Sep 25, 2017 at 14:44
  • @LeonardoAlvesMachado Can it be supported by the carrier? What does happen if your phone is switched off? Is forwarding working then? I do not think so. - - Do you have any recommendations about the applications so I can test their effects. Sep 26, 2017 at 17:48
  • 1
    Unfortunately, I've never tested (nor needed) this feature, so I can't recommend any app for that. Here, on Brazil, the carrier has this option for all kinds of phones - they charge for it, and it is not cheap at all, even for local calls... Sep 26, 2017 at 18:00

1 Answer 1


I got the answer in Oneplus support chat

In that case, please Go-to phone app-> click the 3 grey dot right top corner-> click settings -> call setting-> select SIM 1 or SIM 2.

Output: as expected. Details

  • Set your Smartphone to Airplane mode or switch it off if you want to forwarding to go directly to your second phone. Setting: unreachable call.

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