There are times that we need to reach some strangers or acquainted people for various reasons but, we don't want to keep in touch with them permanently. In that case, we're forced to either add them to our contact list or even remember the phone number.

However, thanks to this Open in Chat- Open Phone No. app, you can now freely send messages to a certain WhatsApp mobile number even without saving them as your contact. Searching or browsing through different profiles is no longer necessary, just select the right country code, enter the required digits, and click the “Message in WhatsApp” button to start communicating.

The package is available for free and works on android mobile, even on slow connections.