telephone authentication

Hello, in my application that I coded with React Native and use Firebase Phone Auth, I am having a problem on some devices in the Android part, the SMS code is not coming, this is very strange, I sent an e-mail to Firebase for this, I wanted to write here in my spare time, has anyone experienced...

Dear Black Hats. First of all a big thank to the community which opened my 14 month ago and since then i just can not stop learning and reading more about everything posted and written here. I need to find a way to get a telephone verification for Swagbucks being a non US resident. I tried...