WhatsApp update shows read receipts, leaked image suggests future VOIP feature
Although this isn’t an actual update to the app, WhatsApp is now sporting a nifty new feature that—although small—might make a big difference in how users of the messaging app stay in touch with their friends. The Facebook-owned app, which would previously show double check marks if a sent message had been received, now goes one step further and turns those check marks blue if the message has been read.