If you are unable to register imo due to an
invalid phone number, there could be several
reasons.
First, please make sure that the phone number
you entered is correct and there are no input
errors.
Additionally, if you are using a virtual or
temporary phone number, imo may not be
able to verify them.
Furthermore, if your phone number has already
been registered by another user or has been
blacklisted by imo, you will be unable to
register.
If you are certain that your phone number is
correct but still unable to register, we
recommend contacting imo's customer
support for assistance.