WHATSAPP is used by billions of people across the world to stay in touch with loved ones and friends.
And aside from text and voice notes, many turn to voice and video calls.
Gone are the days of poor signal or having to pay loads when abroad on calls.
WhatsApp makes it easy to stay in touch the old fashioned way and via video for free.
But if you've noticed the connection isn't quite up to scratch, there could be some hidden settings making it worse.
Millions of Android owners could slash 'vampire bills' – how to save money
Here are three to check.
Turn off use less data for calls
WhatsApp has a handy feature that allows you to use less data for calls.
But this will have an impact on call quality, so you might want to switch it off.
Bear in mind, with it off you'll use more data when not on Wi-Fi, so make sure this doesn't lead to a hefty bill.
Open WhatsApp and go to the Settings.
Select Storage and Data, then ensure Use Less Data for Calls is turned off.
Turn off battery saver
iPhone and Android both have battery saver modes to spare you from running low on power.
This option works by restricting your device's functions to a minimum.
Doing so can therefore affect call quality, so it might be worth turning this off for the duration of your call.
Close background apps
If you have a load of apps running in the background this too can overwork your smartphone.
Millions of iPhone and Android phone owners must check settings immediately
So close any you're not using and it should help improve your call quality.
We pay for your stories! Do you have a story for The Sun Online Tech & Science team? Email us at tech@the-sun.co.uk
