What does tick, double tick and R stand for next to my messages?

These are there to help you find out the status of the message you just sent. ‘

• ’(Tick): Your message has been sent to hike.
• '’(Double Tick): Your message has been delivered to your friend's mobile.
• ‘’(Read): Your friend has read your message.
• Clock: This means that hike is re-trying to send your message. Due to some network issue your message wasn't sent to our servers, but as soon as a connection is found, your message shall automatically be sent to our servers.

For Older versions of hike: Older version users on version 2.8.5 and below will see 'Sent' (S), 'Delivered' (D) and 'Read' (R) instead of Tick and Double Tick.