Here in South Europe people mostly use Viber. Edit: I was very unaware about situation in Southern Europe as I’ve learned from this post… Most people in Croatia use Viber!
Here in South Europe people mostly use Viber. Edit: I was very unaware about situation in Southern Europe as I’ve learned from this post… Most people in Croatia use Viber!
Not on SMS you don’t. I’ve seen SMS apps that claim to have verification, at most that’s a verification the edge router of your service received it.
Since there’s no error detection, there’s no way to universally implement read receipts across vendors.
SMS is a best-effort system. Like shouting at the clouds, unfortunately.