Also Read : 4 Ways to Use mobile Internet on PC Using Android.
Hide Last Seen In iphone :
All you need to do it to upgrade your application to latest version available because the latest update of Whatsapp for Iphone have “Last Seen Timestamp” option. So simply go Settings>> Advanced>>Last Seen Timestamp and turn it OFF.
Hide Last seen in Android :
Method 1 - Using Not Last Seen app :
Because this app basically disconnects your handset from packet data when you enter whatsapp, so servers of whatsapp dont get your status that you are using it and then after reading the messages when you close the whatsapp , it again enables the internet active automatically so in this way you get to read the messages from your contacts without being noticed by whatsapp servers and hence your last seen status is not updated.
You can download Not last seen app for your android phone from here : DOWNLOAD
Method 2 - Manually
2. Open Whatsapp. Read and send messages.
3. Close Whatsapp, now enable Internet and Wifi.
As soon as the Internet connectivity re-initialized , Whatsapp will synchronize with the servers and the messages will be sent without the server getting to know your last online status update.
Unfortunately for our Blackberry and Windows phone users, there is no such method other than Manual at this moment. However in the past, Blackberry had an app known as OpenWhatsapp for hiding Last Seen, but it has been discontinued by its developers. But stay tuned, we will find some trick for these two very soon.