This article is for users who have experienced issues in receiving a Glympse SMS on their Android phone from iPhone users.
This can happen if you used iMessage on your iPhone and then transferred your phone number or your SIM card to an Android, Blackberry, or Windows phone, and did not turn off or deactivate iMessage prior to switching from the Apple device to a non-Apple device. In this case, other iOS devices will still try to use iMessage to send text messages to your phone number. The sender will see the iMessage go through, but the recipient will never receive a text message.
Depending on your situation, there are several routes you can take to resolve this. Follow Apple's support instructions located here for help with your device.