Carriers have been sticking it to their customers for years with SMS
fees that bear no relation to the actual cost of providing the service,
and they've been getting away with it because text messaging is
incredibly convenient. If there's one thing that sparks innovation,
though, it's being ripped off -- and free OTT messaging services like
WhatsApp were born out of that frustration.If you're unfamiliar with WhatsApp Messenger and its brethren -- like the app WeChat -- they're text message alternatives that don't rely on mobile-to-mobile SMS technology. They use the data component within your phone instead.
Short Message Service
SMS is a method of sending 160-character text messages via phones. It was developed as a way to send messages over the stripped-down telephone traffic signaling paths when there was no calling going on, rather than take up chunks of bandwidth space like voice does.
Its beauty is that it's incredibly cheap because it uses hardly any resources, and the resources it does use aren't required for anything else at the time the message is sent.
SMS is cheap, but you wouldn't know it based on the per-message fees telcos have been charging for it -- particularly when roaming.
The tide has changed, however, and today apps like WhatsApp are providing text messaging over 3G or WiFi.
Telcos may well tell you they don't care about the potential SMS revenue loss, because the consumer simply buys an expensive data plan instead of a texting package.
Messaging Over Data:
WhatsApp is an OTT, or over-the-top, messaging service, and this new cross-platform SMS alternative has quickly gained popularity.
It claims 100,000,000 to 500,000,000 installs in the Google Play store, which places it in the same Android install range as telephony app Skype and social network messaging app Facebook Messenger. It reportedly transmits 20 billion messages a day.
The WhatsApp App:
Crucially, WhatsApp apps are available across smartphone platforms, including within the often-closed iOS environment, so there's a good chance your buddies can play along if you jump in and explain the cost savings to them.
The Android app, available at the Google Play store, is free for the first year, and US$0.99 a year after that. This fee is apparently to make up for the lack of advertising revenue -- WhatsApp doesn't sell advertising.
The app neatly reduces the amount of setup interaction required to get going. For example, it automatically verifies your phone number -- it needs the number because it uses it to route messages -- and it automatically integrates contacts from your address book if they are already WhatsApp users.
That sets it apart from the many interfaces that require you to enter a code to verify a number, or agree to a prompt to import your phone book.
This refreshing approach is prevalent throughout the interface -- there's no login or passcode, for example.
Media-sending is well enabled with photos, videos and audio attachable to a chat -- at no charge. Other features include group chat, sharing location, exact-message time stamps, and history.
Some Disappointments:
One big disappointment was the lack of tablet support. WhatsApp is tightly integrated with phone number for identification and can't function if the device isn't able to receive the verification SMS -- ironically.