OneTime messenger app supports all Android phones provided; Your Android phone is running Android OS 4.0 or later and have the latest version of Goggle Play Services installed. Also your Android phone should be able to send SMS during the verification process. You will also need an adequate data plan in order to receive messages when outside the range of a Wi-Fi network. For a successful registration you have to send a SMS from your phone and you will have to wait for confirmation from the server.
After downloading the app from the Google Play Store or the iTunes App Store you have to register your phone number to use OneTime. When registering OneTime the number you are registering has to be the one linked to your current SIM card because you have to send a SMS from your phone. The registration process is very simple and includes the following simple steps:
Enter the phone number for your phone, type your country code in the box on the left, enter your phone number in the box on the right, do not put any leading 0s before your number, click Next and confirm on the next screen that your number is correct. Then you have to accept the Terms of service and privacy policy. Click on Terms of service and privacy policy to read them. To accept the Terms of service and privacy policy slide the marker to on. ONLY if you were invited by a friend please enter the invite code you received with the invitation in the box on the right. If you didn’t receive an invitation leave the box blank.
Click Register (Send SMS) and wait for confirmation from server. You should now see a time counter that counts from 1:20 downwards. After you received the confirmation you have successfully registered with OneTime. If registration was not successful and the counter run out, then you need to resend the SMS by confirming "Trying again?" For a successful registration you have to send a SMS from your phone and you will have to wait for confirmation from the server. Enter Name which other users see if you are not in other user’s phone book and press Next. Click the camera symbol to upload a profile picture. Now you are ready to start chatting with your friends. And you will surely recommend this service to your friends to have free chats.