https://slickdeals.net/f/17469057-tmobile-international-calling-to-30-countries-including-landline-mobile-for-all-lines-on-account-20 *Tmobile International calling to 30 countries (India,China,Mexico,Canada coveted in this list) including landline/mobile for ALL lines on account $20* This is limited promotion, if you are part of t-mobile group plan then this is really useful , this is *$20/account*(letโs say 4 lines in an account then each line is paying $5/month to make international call) Just called customer care and added to my account.
WhatsApp, WeChat, Facebook Messenger, Viber, FaceTime, Skype
You can use whatever but still voice call is useful on certain situation.