How to reset Apple i.d on a used 5s without knowing the old apple i.d?

Hi, my mom's friends's gave me his brother's old iPhone 5s but i don't have any connections to him. I had to unlock the phone to be able to use it in my country. So while setting up the whole language, country e.t.c. It asked for the apple i.d but i don't have it. What do I do? I need to use the phone to make calls tonight!

That happened to me kind of when i bought my sister a used iPod. I went to a computer and went to iCloud.com and created a new Apple ID. Then I used that to log into the device.

I tried using my apple I.d and it didn't work

This is the activation lock and can only be removed by the original owners Apple ID and password.
You will not be able to use the phone.